Top 12 Best Spark Plugs for Generators That Last Longer

Cheap or poorly matched spark plugs cause generators to stall or struggle to start, leaving you without power when you need it most. Finding the best spark plugs for generators means avoiding misfires and ensuring reliable performance during outages or outdoor projects. A spark plug that’s not right for the engine can lead to fouling or a weak spark, reducing efficiency and lifespan.

Good spark plugs for generators are made with durable materials like iridium or platinum, which hold up better under high heat and require less frequent replacement. The correct thread size and heat range matter too, as a plug that’s too hot or cold can damage the engine or cause fouling.

A well-seated plug generates a strong spark that supports clean fuel combustion without excessive wear.

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Our Top Picks 2	TORCH GX Series F7TC Plug	Check Price
Our Top Picks 3	GX Series F7TC Plug with	Check Price

Our Selected Top 12 Spark Plugs for Generators Picks for Every Need

This list features a variety of spark plugs designed specifically for generators, highlighting their performance, compatibility, and durability. Each review details the strengths and weaknesses of the spark plug, helping you find the best fit for different types of generators and usage needs.

1. F7TC Spark Plug for Harbor Predator Engines

Running a generator smoothly depends a lot on having the right spark plug that fits well and lasts long. The F7TC Spark Plug fits a range of popular engines perfectly, making it a practical pick for anyone needing reliable replacement plugs for Harbor Freight and several other brands.

Its biggest strength lies in its compatibility with many engine types without sacrificing quality.

Setting up these plugs involves straightforward installation, thanks to their precise fit for Honda GX and Lifan engines, among others. Regular use shows consistency in sparking, which helps the generator start quickly without lag.

The plugs handle different power outputs well, from smaller 2HP generators to large 15HP engines, making day-to-day maintenance quick and worry-free.

Performance on various gas generators is steady, ensuring clear combustion and fewer misfires during operation. The metal materials feel solid and the build shows careful quality control. Most praise points to how well the plugs maintain power delivery, while a few mention occasional gaps in longevity compared to OEM parts, showing room for improvement in lifespan.

The spark plugs provide consistent ignition performance across several engine types, praised for maintaining steady power delivery. The common drawback is their lifespan, which some users find shorter than original equipment manufacturer plugs.

Those with standard non-inverter generators and popular engine models will find these plugs fitting and effective. Users needing longer-lasting plugs for high-demand or inverter generators might want to explore other options.

Pros

• Works with multiple engine models
• High-quality materials for durability
• Included as 2-pack for convenience
• Reliable spark for various power ranges

Cons

• Longevity can vary compared to OEM plugs
• Not specified for inverter generators

2. TORCH F7TC Spark Plug Replacement for GX Series Engines

Providing a thread diameter of 14mm and a thread length of 19mm, this spark plug is designed for GX series engines, known for reliable fit. Great for anyone maintaining a generator requiring these exact specs, it delivers dependable performance without frequent replacements.

Installation is straightforward thanks to the standard 20.8mm hex size, making it compatible with common tools. Daily operation requires little attention once installed, as the plug is engineered to sustain consistent ignition, supporting smooth engine starts and steady running throughout generator use.

Durably constructed and stemming from a manufacturer with a long history in spark plug technology, it fulfills its role effectively by providing steady spark delivery. Praise highlights its reliability and consistent fit, while the usual downside is ensuring exact specification matching, or it won’t function properly.

The spark plug is often praised for its reliable and snug fit in generators with GX series engines, ensuring smooth operation. The most frequent issue arises from compatibility mistakes, as using the wrong thread or size results in poor performance or damage risk.

Those needing a straightforward, single replacement for specific OEM models will find this product suitable. Users unsure about measurements or who want multi-unit packages might consider alternatives for easier stocking or better assurance of fit.

Pros

• Fits GX series engines precisely
• Durable build quality
• Compatible with common hand tools
• Replaces multiple well-known OEM models

Cons

• Must confirm exact specs to avoid improper fit
• Sold as a single unit, no multi-pack options

3. F7TC Spark Plugs with Wrench for GX Series Engines

People with GX series engine generators looking for reliable spark plugs that last will appreciate this set. Its biggest strength lies in steady ignition and better fuel burning, helping engines run smooth and strong without shaking at idle.

Installation goes smoothly thanks to the included spark plug wrench, making replacements easier. The plugs resist corrosion well and cover a wider heat range than usual, so day-to-day use feels consistent. Reduced carbon buildup means less time cleaning and more running without hiccups in power.

Performance stays strong with a reliable ignition burst that cuts fuel inefficiency and reduces engine shaking. GREPSPUD made them durable with corrosion-resistant materials, helping extend service life. The most common downside is that some expect a longer service life, but it generally meets expectations for everyday generator needs.

The spark plugs deliver steady and powerful ignition that reduces engine shaking and promotes better fuel combustion. Common feedback notes they hold up well against corrosion, yet some wish they lasted longer before needing replacement.

Those using GX340 or GX390 engines will find these plugs an excellent fit and great for daily generator tasks. People seeking longer-lasting plugs or compatibility beyond these series should explore alternative options.

Pros

• Wide heat range for various operating conditions
• Strong ignition burst promotes efficient fuel burning
• Corrosion resistant for longer service life
• Includes a spark plug wrench for easy installation

Cons

• Service life shorter than some other premium plugs
• Primarily designed for GX series engines only

4. TORCH F6TC Spark Plug Replacement for GX Series Engines

TORCH F6TC spark plugs fit well with Honda GX series engines, making them a go-to for small generator users. Their main strength lies in matching OEM standards closely, ensuring a smooth replacement without fuss.

Built on decades of experience, they deliver solid performance for everyday generator needs.

Installation is straightforward since the specifications match the original parts exactly: 14 mm thread diameter, 19 mm thread length, and a 20.8 mm hex size. Once fitted, these plugs offer reliable ignition and consistent engine startup.

Maintaining clean connections and occasional checks keep your generator humming nicely with minimal effort.

Reliable sparking and durable construction are key strengths here. The plugs deliver consistent performance across different GX model generators like Honda GX140, GX160, and GX200.

Most praise highlights their dependable fit and functionality. On the downside, some users note a shorter lifespan compared to more premium plugs, requiring more frequent replacement for heavy use.

Reliable ignition and ease of fit are praised most, while a recurring issue is the shorter lifespan compared to higher-end alternatives. These plugs perform well for standard residential or light commercial generator use but may wear faster under continuous heavy load.

Ideal for those needing a dependable replacement that matches OEM parts perfectly. Not the best pick where extended longevity or use in harsh conditions is required; users might prefer premium plugs for those situations.

Pros

• Exact OEM specification fit
• Reliable ignition performance
• Compatible with multiple engine models
• Easy to install and replace

Cons

• Shorter lifespan under heavy use
• Limited to specific engine types

5. OEM Spark Plug for EU2000i and EU2200 Generators

Talmo OEM Spark Plug for EU2000i and EU2200 generators shines in delivering reliable ignition tailored specifically for these generator models. Ideal for anyone needing precise fit and consistent performance without fuss, it stands out for its guaranteed compatibility and high-quality materials.

Installation takes little time since the spark plugs are engineered to fit EU2000i and EU2200 generators perfectly. The two-pack offers convenience for replacements or keeping a spare on hand. The copper core helps maintain steady spark generation, ensuring the generator starts smoothly and runs without hiccups during everyday use.

Delivering consistent sparks is the core performance strength of these plugs. They are solidly constructed with genuine Talmo parts, offering dependable durability over time.

Positive feedback highlights how well they maintain ignition, while some mention that replacement frequency might depend on generator usage intensity, which is normal for copper-core plugs.

Positive comments emphasize steady and reliable ignition with no fit issues, making startup smooth. Common points mention that these plugs, while durable, will need replacement depending on how often and hard the generator is used.

People running EU2000i or EU2200 generators who want matched OEM parts will appreciate this product. Users with other generator types or who seek universal spark plugs should consider other options for compatibility.

Pros

• Guaranteed fit for EU2000i and EU2200 models
• Reliable copper core ignition
• Two-pack provides good value and backup
• Easy installation designed for generators

Cons

• Replacement intervals vary with usage
• Only compatible with specific generator series

6. NGK Standard Series Spark Plugs BPR4ES (Qty 2)

Replacing spark plugs with these NGK Standard Series ones feels straightforward and reliable, perfect for anyone running a generator regularly. Their biggest strength lies in lasting longer without corrosion or seizing, which keeps your generator firing up smoothly over time.

Installation is simple thanks to a design that fits most standard generators. Day-to-day, they stay stable and resist flashover thanks to special ribbing around the insulator.

A copper core helps dissipate heat well, so the engine runs cooler and stays consistent through regular use, avoiding the frustration of misfires or breakdowns.

Performance shines in maintaining steady power output without degradation, thanks to a pure alumina silicate ceramic insulator that’s strong and good at heat transfer. Built to resist corrosion with trivalent metal plating, these plugs mostly last longer and keep engines clean.

Some do mention occasional challenges with fit on less common models.

This spark plug set is praised for its durability and resistance to corrosion, which helps keep generators running smoothly longer. The most common downside is occasional fit issues with generator models outside their typical range.

People using standard generators focused on long-lasting, reliable spark plugs will find these suit their needs well. Those with less common or specialized generators might want to look elsewhere to avoid compatibility problems.

Pros

• Trivalent metal plating resists corrosion and seizing
• Copper core improves heat removal
• Corrugated ribs prevent flashover
• Pure alumina silicate ceramic insulator

Cons

• Fit may be tricky with some non-standard generators
• Only sold as a set of two

7. YAMAKATO Spark Plug for NGK and Champion Models

Great value spark plugs designed for a wide range of popular generator models. Perfect for those needing reliable, compatible replacements without spending too much. Its biggest strength is that it fits many Honda, Champion, and Predator generators, making it a flexible choice for people who use generators.

Installation is straightforward thanks to the included free Teflon tape, which helps ensure a tight, secure fit. Thread size M141.25mm and a hexagon size of 20.8mm make it compatible with many engines like GX160, GX200, and GX390. The 19mm thread length suits various gasoline-powered generators, allowing consistent daily use without frequent replacements.

Performance is steady, providing dependable ignition across multiple generator sizes from 5.5hp to 13hp. The plug feels solidly built and durable in daily running conditions, with assembly by TORCH ensuring OEM-quality standards. Most praise highlights its reliable performance, while some note occasional challenges with perfect thread alignment during installation.

Reliable ignition performance emerges as the main benefit, backed by solid construction for multiple popular generator models. Some find the threads need careful attention to fix properly, which can slow installation or require adjustments.

Those with Honda or Champion generators looking for a budget-friendly, broadly compatible replacement will appreciate this spark plug. Users needing absolute perfect thread fit on first try might want to consider alternatives with more precise machining.

Pros

• Compatible with many generator brands and models
• Includes free Teflon tape for secure installation
• Solid construction for reliable ignition
• Affordable 3-piece pack for added value

Cons

• Thread alignment may require care during installation
• Single unit count despite 3-piece pack in model number

8. FLYPIG F7TC Spark Plug for Honda Generators

Copper core construction and a colder heat range design suit modified Honda generators needing reliable ignition under intense conditions. Ideal for anyone running engines from GX110 up to 16HP who wants a spark plug that handles varying heat demands better than stock options.

Installation involves simply swapping out the old spark plug in compatible generators such as Honda GX200 and GX390 series, lawnmowers, or go-karts. Its design works well through a wide temperature range, so daily use includes smoother startups and consistent firing, even under increased loads or performance tweaks that push engine limits.

It performs its ignition role solidly, maintaining reliable firing over a broader heat range than standard plugs. The build reflects racing-grade materials allowing consistent spark in tough conditions. Most praise notes dependable power support, while some mention careful fitment checks are needed to avoid ordering the wrong model due to engine variations.

Strong praise focuses on consistent performance across a wider heat range than factory plugs, making it suitable for modified or heavy-use engines. Common complaints revolve around the need to verify fitment carefully due to engine variations, helping avoid ordering errors. Users appreciate the durability but expect exact compatibility checks.

Fans of performance and serious generator use will appreciate its reliable ignition in demanding conditions. Those needing a universal option without careful model matching or who prefer packages including multiple plugs might want to explore other choices.

Pros

• Colder heat range handles performance tweaks well
• Copper core supports consistent ignition
• Fits wide range of Honda generator engines
• Durable build used by professional racers

Cons

• Fitment requires careful checking before purchase
• Only single spark plug included per order

9. F7TC Spark Plug 4 Pack for Honda and Predator Generators

Widely compatible with many 4-stroke engines, this set of spark plugs works well for people using generators, lawn mowers, and similar equipment who need reliable replacements. Its biggest strength lies in fitting a broad range of models from 5.5HP to 16HP, making it a practical choice for various machines.

Changing the spark plugs is straightforward thanks to the standard thread diameter of 0.54 and overall length of 3.13. Having four plugs in one pack means you have backups ready, reducing downtime during maintenance.

It fits classic engines like the Honda GX series and Predator models, useful for keeping equipment running smoothly through regular tasks.

Performance stays consistent with the right fit, delivering reliable ignition across different engine types. The build quality seems solid, matching OEM part numbers 92070-2075 and 92070-2077 for trusted compatibility.

Users note that installation fits well without issues, though some report occasional challenges verifying exact dimensions before purchase.

Strong compatibility across Honda and Predator engines is a clear benefit, assuring reliable ignition when installation goes well. The main downside is that buyers need to double-check measurements to avoid fitment issues, slowing down the replacement process on occasion.

Anyone running popular 5.5HP to 16HP 4-stroke engines will likely appreciate having multiple plugs bundled together. Those with less common or very specific engine designs should consider verifying size carefully or looking at specialized alternatives for a perfect match.

Pros

• Compatible with a wide engine range
• Includes four plugs for long-term use
• Matches OEM part specifications closely
• Fits many common 4-stroke gasoline engines

Cons

• Some difficulty confirming exact fit before buying
• Limited information on spark plug material

10. F6TC Spark Plug 2-Pack Replacement for GX Series Engines

Perfect for those running Honda GX series engines, these spark plugs are a reliable replacement that fit a wide range of small generators and engines. Their biggest benefit lies in compatibility, suited for everything from 5.5HP to 13HP engines, giving you a dependable spark without constant replacements.

Installation is straightforward because these plugs fit many Honda GX models exactly, making swapping out old plugs simple and quick. Daily use depends on keeping a clean, consistent spark for starting and running your generator without hiccups, and these plugs handle that smoothly across various engine sizes. They come in a pack of two, so you have a spare on hand for maintenance.

These spark plugs do their job well by providing reliable ignition in the varied engine sizes listed. The build quality matches OEM specifications, offering a solid fit and performance.

Many find they last long and keep the generator running steady. Some notice that they might require occasional checking or cleaning to keep performance optimal.

The F6TC spark plugs consistently provide reliable ignition, keeping several small engines running smoothly as expected. Some users mention needing to check and clean the plugs now and then to avoid spark issues, which is fairly common for this type of part.

Those with Honda GX series generators will find these plugs fit perfectly and perform well, offering simple replacements. Using an engine not included in the listed models means you’ll need to find a different spark plug option to make sure it fits and performs well.

Pros

• Exact fit for multiple Honda GX series engines
• Sold in a convenient 2-pack for quick replacements
• Compatible with many other spark plug brands
• Suitable for engines ranging from 5.5HP to 13HP

Cons

• Requires occasional cleaning to maintain spark quality
• Not suitable for engines outside the specified models

11. F6RTC Spark Plug 3 Pack for Honda and Predator Engines

Keeping a generator running smoothly can be a hassle, especially when replacement parts are hard to find. Spark plugs compatible with popular engines like Honda and Predator offer reliable ignition and easy fit.

The biggest strength lies in broad compatibility, making it a great option for folks who work with multiple small engine models.

Installation is straightforward, matching well with engines such as Honda GX series and Predator 196cc to 420cc. Experience from daily use shows consistent ignition without frequent fouling.

The spark plug handles the heat and wear typical in small engines for generators, mini bikes, and lawn mowers, so maintaining your equipment stays simple and reliable.

Performance held steady during use, delivering solid ignition that helps engines start easily. Build quality shows standard manufacturing with proven OEM equivalents, ensuring dependable function.

Common praise highlights dependable starts while occasional reports mention some plugs wearing out quicker than expected under heavy continuous use.

The spark plug performs reliably in delivering ignition needed for starting various small engines, with reviews noting dependable starts as a key benefit. Some mention quicker wear when used heavily, which could mean replacing them more often in continuous operation scenarios.

Those running generators, water pumps, or mini bikes with compatible engines will appreciate the versatility and ease of replacement. Users expecting long lifespan under heavy or commercial use might look for plugs specifically designed for tougher conditions or bulk sets.

Pros

• Fits a wide variety of small engine brands and models
• Easy to install for quick replacement
• Delivers consistent ignition performance
• Compatible with multiple engine sizes and types

Cons

• Some plugs may wear out under heavy use
• Sold in single units, requiring multiple purchases

12. Generac 0G0767A OEM RV Spark Plug

Designed with a precise 0.040 gap setting, the Generac 0G0767A OEM RV Spark Plug is perfect for RV generator users seeking a reliable, factory-quality ignition part. Its major strength lies in restoring and maintaining optimal engine performance to keep your generator running smoothly.

Installation is straightforward since it’s a direct-fit replacement requiring no modifications, fitting select Generac RV generators directly. Daily use involves consistent fuel ignition that helps reduce misfires, ensuring your generator starts reliably every time you need power. It’s built to support extended use, promoting longer engine life during frequent RV outings.

Performance holds up well with steady spark delivery that keeps engine firing dependable. The build aligns with OEM standards, reflecting solid construction and exact specifications. Most praise goes to its reliability in smooth ignition and stable power output, while the common downside in reviews points out limited compatibility with only certain models.

Reliable spark delivery makes sure your generator starts smoothly every time and maintains strong engine firing. The main complaint is limited compatibility, so it won’t fit every model out there.

Perfect for those who already use compatible Generac RV generators and want to keep factory-level performance. Others with different generator brands or models may need to look for a more universal spark plug option.

Pros

• Pre-set 0.040″ gap for optimal ignition
• Direct-fit for easy installation without modifications
• OEM-quality ensures consistent performance
• Durable for extended generator use

Cons

• Compatible only with select Generac RV generators
• Sold as single units, not multi-packs

Comparison of Top Spark Plugs for Generators

How to Choose the Right Spark Plug for Generators

Selecting the right spark plug for generators depends on factors like compatibility, heat range, and durability. Choosing the correct type ensures efficient engine performance, reduces wear, and prevents frequent replacements, ultimately saving both money and potential mechanical issues.

Compatibility and Fit

Finding a spark plug that fits right can be tricky. Using one with the wrong thread size or too short a reach often means it won’t screw in properly or could damage the engine. This leads to poor combustion or engine misfires, which might seem like minor issues but cause significant frustration during operation.

Many generators call for a specific heat range in the spark plug to prevent overheating or fouling. The heat range affects how hot the plug runs; a plug running too cold results in deposits building up, while one running too hot can cause pre-ignition damage.

Check your engine manual for exact thread sizes, reach, and recommended heat range to avoid these problems and keep things running steadily.

Material and Durability

Electrode materials make a noticeable difference over time. Cheaper plugs with standard nickel electrodes wear out quickly under constant heat and vibration.

Those made with iridium or platinum last much longer and handle corrosion better. This means fewer replacements and more consistent performance without the engine sputtering or losing power.

Generators run hot and vibrate heavily. A solid build, featuring corrosion-resistant coatings and a durable electrode design, keeps the spark plug from cracking or wearing out too soon.

Overlooking this can result in unexpected failures especially after extended use or storage periods.

Ignition Performance

Reliable ignition is essential for smooth startups. A spark plug that delivers consistent, strong sparks reduces the chance of stalling and rough idling. Weak sparks often lead to hard starting or uneven engine running, which makes generator use frustrating, especially in cold weather or under load.

Better ignition efficiency also improves fuel consumption and cuts down emissions. This means the engine runs cleaner and slightly more economically, which matters during extended generator use.

Look for plugs designed to maintain spark strength even as they age to avoid sudden drops in performance.

Maintenance and Cleaning

Access to spark plugs can vary widely by generator model. Designs that allow easy removal without special tools save time during maintenance. Struggling with stuck or hard-to-reach plugs only adds to downtime and extra frustration.

Plugs resistant to fouling and carbon buildup extend time between cleanings. When cleaning is necessary, a simple wire brush or spray cleaner often does the job well.

Avoid plugs requiring special cleaning tools or complicated procedures because frequent downtime is never convenient.

Warranty and Support

Warranty length and coverage often reflect a manufacturer’s confidence in their spark plug. Longer warranties offer extra assurance, especially when using the generator under demanding conditions.

Some brands offer guarantees against defects or early failures that can save both money and trouble.

Consider also how easy it is to get support or replacements if something goes wrong. Having accessible customer service means problems get resolved faster rather than leaving you stuck without a working spark plug. Double-check the terms so you understand what is covered before purchase.

Proper Maintenance Practices to Extend Spark Plug Lifespan in Generators

Replacing spark plugs at regular intervals helps keep generators running smoothly, but proper maintenance extends their lifespan even more. Cleaning the spark plug electrodes prevents carbon buildup, which can cause misfires and reduce efficiency.

Use a wire brush or spark plug cleaner for best results. Checking the spark plug gap is essential; too wide or too narrow a gap affects ignition quality and fuel economy.

Other maintenance tips include:

• Inspecting the spark plug for cracks or deposits during oil changes or tune-ups
• Ensuring the spark plug threads and gasket seat cleanly to avoid compression leaks
• Using anti-seize compound sparingly on the threads to prevent galling without contaminating the electrode

Follow the generator manufacturer’s recommended replacement schedule, but adjust based on use and operating conditions to avoid premature failure.

Common Mistakes to Avoid When Installing Spark Plugs in Generators

Improper spark plug installation can cause starting problems and damage the generator engine. One common error is over-tightening the spark plug. This can strip the threads in the cylinder head or break the ceramic insulator.

Use a torque wrench set to the manufacturer’s specifications to avoid this issue.

Other mistakes to avoid:

• Skipping the spark plug gap check. Every new spark plug requires verifying and adjusting the gap for consistent ignition.
• Forgetting to clean the spark plug hole before installation, which can allow debris to fall into the combustion chamber.
• Not replacing the spark plug if it’s used, cracked, or fouled instead of reusing one from a previous engine.

Correct installation helps maintain reliable generator starts and protects engine components over time.

Comparing OEM vs Aftermarket Spark Plugs for Generator Performance

OEM spark plugs come specifically designed for a generator’s engine by the original manufacturer, ensuring compatibility with combustion chamber design and heat range. These plugs generally provide predictable performance and longevity based on the engine’s needs.

Aftermarket spark plugs vary widely by brand and quality. Some are made with similar materials and designs to OEM but are often priced lower. Others may offer different electrode compositions such as platinum or iridium to improve wear resistance or ignition consistency.

Choosing between them:

• OEM plugs tend to guarantee fit and function with minimal guesswork.
• Quality aftermarket plugs can offer extended intervals between changes if matched correctly.
• It’s important to check reviews and product specs, considering the generator’s operating conditions to select the best option.

Neither option is universally better; it depends on balancing cost, availability, and performance needs for your specific generator model.

People Also Asked

How Do I Choose the Right Spark Plug Size for My Generator?

The right spark plug size for your generator depends on the manufacturer’s specifications. Check the owner’s manual or the label on the generator for the exact replacement part number or size. Using the correct size ensures proper engine performance and prevents damage to the cylinder head.

What Are Common Spark Plug Issues in Portable Generators?

Common spark plug issues in portable generators include fouling, carbon buildup, and electrode wear. These problems cause poor starting, misfires, or reduced power. Regular inspection and cleaning can help extend spark plug life and keep the generator running smoothly.

How Often Should I Replace Spark Plugs in a Generator?

Spark plugs in generators typically need replacement every 100 to 200 hours of use. Frequent use or running under heavy load can shorten this interval. Watching for signs like difficulty starting or rough operation helps determine when replacement is necessary.

Can Using the Wrong Spark Plug Damage My Generator Engine?

Using the wrong spark plug can lead to engine hesitation, misfires, or even damage over time. Incorrect heat range or thread size affects combustion and can cause the plug to overheat or seize. Always match the spark plug to the generator’s specifications to avoid these issues.

What Is the Proper Way to Install Spark Plugs Safely?

Install spark plugs by hand first to avoid cross-threading, then tighten with a spark plug wrench to the recommended torque. Applying anti-seize compound on the threads can prevent rust and make future removal easier. Avoid over-tightening, which can damage the threads or spark plug.

Conclusion

Choosing the right spark plug for a generator mostly comes down to compatibility with your generator’s engine, durability to handle the run time, and the type of material for consistent ignition. The plug needs to fit well and withstand the heat and conditions it will be exposed to during use.

Consider how often you use your generator and your budget before making a choice. Some spark plugs last longer but cost more upfront. Review the comparison table and the options above to find the best balance for your needs and setup.