A healthy lawn starts with a well-maintained mower, and one of the most critical components for reliable engine performance is a good spark plug. A worn-out or fouled spark plug can lead to hard starting, rough idling, and reduced power. Choosing the best lawn mower spark plug ensures your mower fires up quickly and runs smoothly, making yard work less of a chore. We’ve rounded up some top-rated options that offer excellent value and durability for various lawn mower engines.
Quick Product Comparison
Our Top 6 Best Lawn Mower Spark Plug Reviews – Expert Tested & Recommended
1. Briggs & Stratton 491055S Air Filter Replacement – Pack of 2
The Briggs & Stratton 491055S Air Filter Replacement – Pack of 2 offers exceptional quality and performance. These filters are designed to keep your engine running efficiently by preventing dirt and debris from entering. They are a direct replacement for many Briggs & Stratton engines, making maintenance straightforward.
Key Features That Stand Out
- ✓ Direct fit for most Briggs & Stratton engines.
- ✓ Durable construction for long-lasting performance.
- ✓ Two filters included in the pack for convenience.
- ✓ Helps maintain optimal engine performance and fuel efficiency.
Why We Recommend It
We recommend this pack of Briggs & Stratton air filters because they are a reliable and cost-effective way to keep your mower’s engine clean and running smoothly. Brand name quality ensures a proper fit and effective filtration for your lawn care needs.
Best For
This air filter pack is best for owners of Briggs & Stratton powered lawn mowers who want a straightforward and dependable replacement part.
Pros and Cons
Pros:
- Easy installation.
- Ensures cleaner air intake for the engine.
- Good value with a two-pack.
Cons:
- Only compatible with specific engine types.
Customer Reviews
Customer Review: “Perfect fit for my Snapper lawn mower with a Briggs engine. Started right up after changing it. Much better than trying to clean the old one.”
Customer Review: “Great value for the price. These filters seem to be good quality and do the job they are intended for. No issues with installation.”
2. 593260 Air Filter & Spark Plug Kit for B&S Engines, Toro, Troy Bilt Mowers (2 Pack)
The 593260 Air Filter & Spark Plug Kit is a comprehensive solution for maintaining your Briggs & Stratton engine, as well as compatible Toro and Troy Bilt mowers. This kit includes both an air filter and a spark plug, ensuring your engine gets the tune-up it needs for optimal performance and longevity.
Key Features That Stand Out
- ✓ Includes both air filter and spark plug for a complete tune-up.
- ✓ Replaces common part numbers like 593260, 798452, and 798339.
- ✓ Enhanced filtration with a pre-filter cleaner for improved engine life.
- ✓ Premium materials ensure durability and reliability.
Why We Recommend It
This kit earns our Editor’s Choice recommendation because it offers incredible value by bundling two essential maintenance items. It simplifies the process of replacing worn-out parts, ensuring your mower runs more efficiently and lasts longer.
Best For
This kit is ideal for homeowners with Briggs & Stratton engines who want a convenient, all-in-one solution for routine engine maintenance.
Pros and Cons
Pros:
- Convenient two-in-one kit.
- Improves engine performance and durability.
- Good value compared to buying parts separately.
- Direct replacement for many popular engines.
Cons:
- Spark plug may not be compatible with all engine types.
Customer Reviews
Customer Review: “Good value! I installed both parts on my 22 recycler toro and it started right up, running better than before. Easy to swap out.”
Customer Review: “Price and quality match! Great for our purpose!! Everything fit perfectly on my Troy Bilt mower.”
3. Honda Genuine OEM 98079-55846 BPR5ES Spark Plug Replacement
The Honda Genuine OEM 98079-55846 BPR5ES Spark Plug is a top-tier choice for Honda engine owners. Using genuine OEM parts ensures your engine receives the exact specifications it was designed for, leading to optimal performance and reliability. This spark plug is built for durability and consistent ignition.
Key Features That Stand Out
- ✓ Genuine Honda OEM part for guaranteed compatibility.
- ✓ Ensures reliable starting and smooth engine operation.
- ✓ Durable construction for extended service life.
- ✓ Directly replaces part numbers like 98079-55876.
Why We Recommend It
This Honda spark plug is our best budget pick because it offers premium quality at an accessible price point for Honda owners. It’s an excellent choice for those who prioritize using OEM parts for their engine’s longevity and performance.
Best For
This spark plug is best for owners of Honda lawn mower engines and other equipment that specifically call for the 98079-55846 or BPR5ES specification.
Pros and Cons
Pros:
- Perfect fit for Honda engines.
- Improves engine’s starting and running.
- High-quality construction from a trusted brand.
Cons:
- Can be more expensive than aftermarket options.
Customer Reviews
Customer Review: “Factory spark plug for my Honda lawn mower. Great for the tune ups and ensures it starts every time. Highly recommend using genuine parts.”
Customer Review: “Perfect fit and worked great for my Honda lawnmower. Boy, it was my old one blacker than black, so its function is much better now. Easy to install.”
4. RC12YC Spark Plugs Compatible with Briggs & Stratton, Kohler, John Deere Mowers
The RC12YC Spark Plugs are designed for broad compatibility, fitting a wide range of engines from brands like Briggs & Stratton, Kohler, and John Deere. These plugs are a great aftermarket option for those looking to replace their mower’s spark plug without overspending, offering reliable ignition for consistent performance.
Key Features That Stand Out
- ✓ Compatible with Champion RC12YC and many other part numbers.
- ✓ Offered in convenient multi-packs to save time and money.
- ✓ Built with quality materials for dependable ignition.
- ✓ Helps restore lost power and improve fuel economy.
Why We Recommend It
We recommend these RC12YC spark plugs for their excellent compatibility and value. They provide a solid, dependable spark that will get your mower started reliably, making them a smart choice for routine maintenance.
Best For
This spark plug set is best for DIY mechanics and lawn mower owners who need a versatile replacement plug that fits many common engine brands.
Pros and Cons
Pros:
- Wide compatibility with various engine brands.
- Cost-effective alternative to OEM parts.
- Provides a reliable spark for starting.
Cons:
- May lack the brand name recognition of OEM plugs.
- No specific markings on the plug itself.
Customer Reviews
Customer Review: “No marking of any kind on the sparkplug. However, they work just like the name brand. My mower started up on the first try after installing.”
Customer Review: “I bought these for my Briggs and Stratton powered push mower and they fit perfectly. The mower runs much smoother now. Great for the price.”
5. RC12YC Spark Plug 491055, 10 Pack, Replaces Briggs & Stratton 491055S/T & More
★★★★☆ 4.5/5 Rating: ★★★★☆ 4.5/5
-->For those who go through spark plugs frequently or want to stock up, the RC12YC Spark Plug 10 Pack is an excellent choice. These plugs replace common part numbers like Briggs & Stratton 491055S, offering a cost-effective solution for maintaining multiple mowers or ensuring you always have a spare on hand. They provide the necessary spark for your engine to start and run.
Key Features That Stand Out
- ✓ Bulk 10-pack for maximum value and convenience.
- ✓ Replaces Briggs & Stratton 491055S and other specified part numbers.
- ✓ Compatible with Champion, John Deere, and other engines.
- ✓ Designed to deliver a consistent spark.
Why We Recommend It
This 10-pack of RC12YC spark plugs is a fantastic option for its sheer value and convenience. If you have multiple machines or simply want to have replacements readily available, this bulk pack makes sense for both your wallet and your maintenance schedule.
Best For
This bulk pack is best for individuals with multiple lawn mowers or other small engines that use the RC12YC type plug, or for those who want to stock up for future needs.
Pros and Cons
Pros:
- Exceptional value with 10 plugs in one pack.
- Reduces the need for frequent purchases.
- Good performance for the price.
Cons:
- Storage space is needed for 10 plugs.
- Individual plugs are not packaged separately.
Customer Reviews
Customer Review: “These spark plugs fit my Briggs & Stratton engine perfectly. I haven’t had any issues with starting my mower since I replaced the old plug. Great value pack.”
Customer Review: “I received the 10 pack of RC12YC plugs. They seem to be good quality and fit as expected on my old John Deere tractor. Saved a lot of money compared to buying them individually.”