Few things are more frustrating than a mower that sputters, stalls, or refuses to start when you need it most. Often, the culprit is a worn or fouled spark plug. Replacing it is one of the simplest, most cost-effective maintenance tasks you can do to keep your engine running smoothly all season.
This guide reviews ten top-rated spark plugs, covering popular brands and compatible models. Whether you have a push mower, riding mower, or a specific engine brand, you’ll find the right plug to restore power, improve fuel efficiency, and ensure reliable starts.
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Briggs & Stratton 491055-2pk Spark Plug (2 Pack) Replaces 805015/72347/4910…
Best forBriggs engines needing RC12Y
- Genuine Briggs & Stratton part
- Two plugs for value
ConsiderNot for OHV engines
Briggs & Stratton 796112-2pk Spark Plug (2 Pack) Replaces J19LM, RJ19LM, 80…
Best forOlder Briggs engines using J19LM
- Replaces J19LM and RJ19LM
- Two-pack convenience
ConsiderNot for newer OHV engines
Honda Genuine OEM 98079-55846 Spark Plug BPR5ES; Replaces 98079-55876
Best forHonda engines needing BPR5ES
- Genuine Honda OEM part
- Perfect fit for Honda engines
ConsiderPremium price
RC12YC Spark Plugs Compatible with Champion BS 491055 491055S 692051 792015…
Best forMultiple engines needing RC12YC
- Four plugs for great value
- Wide compatibility
ConsiderAftermarket brand
Hipa 14 132 11-S DCPR6E Spark Plug for Kohler XT650 XT675 XT775 XT800 RH255…
Best forKohler XT series engines
- Exact fit for Kohler engines
- Two plugs included
ConsiderLimited to specific models
Honda 98079-56846 (BPR6ES) Small Engine Spark Plug for GCV160, GCV190
Best forHonda GCV160 and GCV190
- Genuine Honda part
- Perfect for GCV engines
ConsiderPremium price
MaxPower 334058 Spark Plug for Riding Mowers
Best forRiding mowers needing RC12YC
- Resistor type reduces interference
- Replaces multiple brands
ConsiderAftermarket brand
Champion Spark Plug for Craftsman (2 Pack) # 71G RC12YC-2pk
Best forCraftsman mowers needing RC12YC
- Genuine Champion quality
- Two plugs included
ConsiderBulk packed, no box
Briggs & Stratton 496018-2pk Spark Plug (2 Pack) For OHV Engines Replaces 5…
Best forBriggs OHV engines
- Designed for OHV engines
- Genuine Briggs & Stratton
ConsiderNot for non-OHV engines
Craftsman CMXGZAM250012 Current Walk 2 BPR6ES 751-10292 Spark Plug, Black
Best forCraftsman walk-behind mowers
- Direct replacement for Craftsman
- Improves fuel efficiency
ConsiderLimited to specific models
Briggs & Stratton 491055-2pk – Reliable Twin Pack
Brand: Briggs & Stratton
A solid, genuine twin pack for reliable starts in many Briggs engines.
This two-pack from Briggs & Stratton is designed to replace the Champion RC12Y and several OEM numbers, making it a versatile choice for many Briggs engines. The 491055 plug is known for its consistent firing and durable construction, ensuring your mower starts easily and runs smoothly. Having two plugs on hand means you can replace one now and keep the other as a spare for next season.
It’s a practical buy for anyone who wants a dependable, brand-name plug without the hassle of cross-referencing. The package is straightforward, and installation is simple with a standard socket. If you own multiple small engines, this twin pack offers great value and peace of mind.
- Genuine Briggs & Stratton part
- Two plugs for value
- Fits many Briggs models
- Not for OHV engines
- Check compatibility first
Briggs & Stratton 796112-2pk – Classic J19LM Fit
Brand: Briggs & Stratton
A dependable, classic plug for older Briggs engines, with a handy spare.
This two-pack replaces the classic J19LM and RJ19LM plugs, along with several other part numbers, making it a common choice for older Briggs & Stratton engines. The 796112 plug features a standard design that delivers consistent spark and dependable performance. It’s a straightforward replacement that gets your mower running without fuss.
Because it comes in a two-pack, you can keep a spare on hand for quick changes. The plug is built to meet OEM specifications, so you can trust its fit and function. If your engine calls for a J19LM, this is a reliable, cost-effective option that won’t let you down.
- Replaces J19LM and RJ19LM
- Two-pack convenience
- Trusted brand
- Not for newer OHV engines
- Basic design
Honda Genuine BPR5ES – OEM Precision
Brand: Honda
A genuine, high-quality plug that keeps your Honda running like new.
Honda’s genuine BPR5ES spark plug is engineered specifically for Honda small engines, ensuring a perfect fit and optimal performance. This OEM plug meets Honda’s exact specifications, providing reliable ignition and efficient combustion. If you own a Honda mower, using this plug helps maintain the engine’s original performance and longevity.
The BPR5ES is a resistor plug that reduces electromagnetic interference, which can protect your mower’s electronic components. It’s a straightforward replacement that requires no modification. For Honda owners who want the peace of mind that comes with a genuine part, this plug is the clear choice.
- Genuine Honda OEM part
- Perfect fit for Honda engines
- Resistor type reduces interference
- Premium price
- Only for specific Honda models
Tecreddy RC12YC 4-Pack – Budget Multi-Pack
Brand: Tecreddy
A budget-friendly multi-pack that covers many common mower engines.
This Tecreddy 4-pack offers RC12YC spark plugs that are compatible with a wide range of engines, including Briggs & Stratton, Kohler, and John Deere. The plugs are built with quality materials and precision machining to ensure reliable performance. Having four plugs in one pack is a great value, especially if you maintain multiple machines.
Installation is easy thanks to the accurate sizing. The plugs are designed to match the dimensions of the original RC12YC, so they fit without issues. If you’re looking for an affordable way to keep several engines running, this multi-pack is a smart buy. Just double-check your engine’s requirements to ensure compatibility.
- Four plugs for great value
- Wide compatibility
- Precision machined
- Aftermarket brand
- Check fitment carefully
Hipa DCPR6E 2-Pack – Kohler Engine Fit
Brand: Hipa
A precise, reliable plug for Kohler XT series, with a spare included.
This Hipa 2-pack is designed to replace the NGK DCPR6E and Kohler 14 132 11-S spark plugs. It’s compatible with a range of Kohler engines, including XT650, XT675, XT775, and XT800 series, as well as some Toro models. The plug features a 12mm thread diameter and 19mm reach, matching OEM specifications for a precise fit.
Using the correct spark plug is crucial for engine performance, and this Hipa plug delivers reliable ignition. The pack of two means you have a spare on hand. Before purchasing, verify your engine’s model number to ensure compatibility, as this plug is not universal. For Kohler owners, this is a solid, affordable replacement option.
- Exact fit for Kohler engines
- Two plugs included
- Matches OEM specs
- Limited to specific models
- Aftermarket brand
Honda BPR6ES – For GCV160 and GCV190
Brand: Honda
A genuine, high-quality plug that ensures your Honda GCV runs smoothly.
This genuine Honda spark plug is specifically designed for the GCV160 and GCV190 engines, which are common in many Honda mowers and tillers. The BPR6ES plug provides a consistent spark and optimal combustion, helping your engine run efficiently and start reliably. As an OEM part, it guarantees a perfect fit and performance.
Honda’s reputation for quality and reliability is built into this plug. It’s a simple, direct replacement that you can install with basic tools. If you own a Honda GCV series engine, this is the plug to use to maintain peak performance and extend the life of your equipment.
- Genuine Honda part
- Perfect for GCV engines
- Reliable performance
- Premium price
- Only for specific models
MaxPower 334058 – Riding Mower Resistor Plug
The MaxPower 334058 is a resistor spark plug designed for riding mowers, replacing Champion RC12YC, Autolite 3924, and NGK BKR5E. The resistor helps reduce electromagnetic interference, which can be beneficial for mowers with electronic ignition systems. This plug is built to deliver reliable performance in demanding conditions.
It’s a versatile replacement that fits many riding mower engines. The MaxPower brand is known for producing quality aftermarket parts. If you need a dependable plug for your riding mower, this is a solid choice. Just verify your engine’s specifications to ensure it’s the right fit.
- Resistor type reduces interference
- Replaces multiple brands
- Good for riding mowers
- Aftermarket brand
- Check compatibility
Champion RC12YC 2-Pack – Genuine Craftsman Fit
Brand: Champion
A genuine, dependable plug for Craftsman mowers, with a spare.
This genuine Champion RC12YC two-pack is a common replacement for Craftsman mowers and many other small engines. Champion is a trusted name in spark plugs, and this model is known for its consistent firing and durability. The two-pack gives you a spare for future use.
The plugs are bulk-packed, so they come without individual boxes, but that doesn’t affect performance. They meet OEM specifications, ensuring a proper fit. If your owner’s manual calls for an RC12YC, this is a reliable, genuine option that will keep your mower running smoothly.
- Genuine Champion quality
- Two plugs included
- Fits Craftsman and others
- Bulk packed, no box
- Check manual for fit
Briggs & Stratton 496018-2pk – OHV Engine Choice
Brand: Briggs & Stratton
A precise, genuine plug for OHV engines, with a spare for convenience.
This Briggs & Stratton two-pack is specifically designed for OHV (Overhead Valve) engines, replacing the 5066K and Champion RC14YC. OHV engines have different spark plug requirements, and this plug is built to meet those needs. It delivers reliable ignition and helps maintain engine efficiency.
Using the correct plug for your OHV engine is essential for optimal performance. This genuine Briggs & Stratton part ensures a perfect fit and dependable operation. The two-pack provides a spare for quick replacements. If you own an OHV engine, this is a smart investment.
- Designed for OHV engines
- Genuine Briggs & Stratton
- Two plugs included
- Not for non-OHV engines
- Check engine model
Craftsman BPR6ES – Seasonal Replacement
Brand: CRAFTSMAN
A reliable, easy-to-install plug that keeps your Craftsman running efficiently.
This Craftsman spark plug is designed for engines using part numbers F6RTC, 951-10292, and 751-10292, replacing the 7133961. It’s a direct replacement for many Craftsman walk-behind mowers. The plug is built to provide reliable starts and efficient fuel combustion, helping your mower run at its best.
Replacing your spark plug each season is recommended to maintain performance, and this plug makes that easy. It comes with clear instructions and requires only a spark plug wrench for installation. If you notice reduced power or fuel efficiency, this plug is a simple fix. It’s a dependable choice for Craftsman owners.
- Direct replacement for Craftsman
- Improves fuel efficiency
- Easy seasonal swap
- Limited to specific models
- Single plug only
Buyer’s Guide: What to Consider
Choosing the right spark plug is crucial for your mower’s performance. This guide covers key factors like compatibility, plug type, and material to help you make an informed decision.
- Check Your Engine's Manual: Always consult your owner's manual for the exact spark plug part number. Using the wrong plug can cause poor performance or engine damage. Cross-reference the part number with the plug's compatibility list.
- Understand Spark Plug Types: Spark plugs come in standard, resistor, and iridium types. Resistor plugs reduce interference, while iridium offers longer life. For most mowers, a standard or resistor plug is sufficient. Choose based on your engine's requirements.
- Consider Electrode Material: Copper plugs are common and affordable, while platinum or iridium plugs last longer. For typical seasonal use, copper is fine. If you want longer intervals between changes, consider a premium material.
- Check the Gap: The spark plug gap must match your engine's specification. Most plugs come pre-gapped, but it's wise to verify with a gap tool. An incorrect gap can cause misfires or hard starting.
- Buy from Reputable Brands: Stick with well-known brands like Briggs & Stratton, Honda, Champion, or NGK. Aftermarket brands can be good, but ensure they meet OEM specs. Genuine parts often guarantee a perfect fit and reliable performance.
Conclusion
Selecting the right spark plug is a simple yet vital part of mower maintenance. Whether you need a genuine OEM plug for your Honda or a budget-friendly multi-pack for various engines, the options above cover a wide range of needs. Always verify compatibility with your engine model to ensure a perfect fit.
For most users, a genuine plug from the engine’s manufacturer is the safest bet, but quality aftermarket options can offer great value. Replace your spark plug annually or when you notice performance issues, and your mower will reward you with reliable starts and efficient cutting.
Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.
With a passion for exploring the great outdoors and staying up to date on the latest fashion trends, Erica uses her expertise to provide valuable insights into the products that matter most to her readers.
Whether you're looking for camping equipment or the latest fashion accessories, Erica's articles are the perfect resource for finding the best products that fit your lifestyle.