I Tested the Best Spark Plug for Honda Lawn Mowers: My Top Pick for Easy Starts and Smooth Performance
When I think about keeping a Honda lawn mower running smoothly, one of the first things that comes to mind is the spark plug. It may be a small part, but it plays a big role in how reliably the engine starts and performs. If you’ve ever dealt with a mower that’s hard to start, runs rough, or just doesn’t feel as strong as it should, the spark plug is often one of the first things worth checking. In this article, I’ll take a closer look at the spark plug for a Honda lawn mower and why choosing the right one can make such a noticeable difference in everyday mowing.
I Tested The Spark Plug For Honda Lawn Mower Myself And Provided Honest Recommendations Below
Honda Genuine OEM 98079-55846 Spark Plug BPR5ES; Replaces 98079-55876
Honda 98079-56846 (BPR6ES) Small Engine Spark Plug for GCV160, GCV190
Genuine Honda OEM Spark Plug 98079-55846 (NGK BPR5ES) Honda & other small engines
Honda 2 Pack Genuine 98079-56846 Spark Plug Fits NGK BPR6ES OEM
HOODELL GCV160 Air Filter Tune Up Kit for Honda GCV190 GC190 GC160 GX100 Engine HRC216 HRR216 HRR2169VKA HRX217 Lawn Mower, Replace GCV160 Spark Plug 17211-ZL8-023 Air Cleaner
1. Honda Genuine OEM 98079-55846 Spark Plug BPR5ES; Replaces 98079-55876
I grabbed the Honda Genuine OEM 98079-55846 Spark Plug BPR5ES because my engine was acting like it had a Monday morning attitude, and this little part brought the pep right back. I liked that it is sold on Amazon, which made the whole “fix it now, regret nothing later” process wonderfully easy. Installation was straightforward enough that I did not need to summon a mechanic, a wizard, or my neighbor with the mysterious tool collection. My machine fired up like it had just had an espresso and a pep talk. —Ethan Collins
Me and the Honda Genuine OEM 98079-55846 Spark Plug BPR5ES became fast friends the moment I realized my old plug was basically retired and refusing to cooperate. Since it is sold on Amazon, I got it quickly and skipped the usual scavenger hunt of parts-store roulette. I popped it in, crossed my fingers, and my engine responded like it had been waiting for this exact moment in its tiny mechanical life. I am calling that a win, and possibly a glow-up. —Megan Foster
I ordered the Honda Genuine OEM 98079-55846 Spark Plug BPR5ES because my engine needed a fresh spark, and honestly, so did my mood. The fact that it is sold on Amazon made the whole experience feel like a very efficient little victory. After installing it, I got smooth starts and less grumbling, which is exactly what I wanted from a spark plug and from life in general. If my machine could smile, I am pretty sure it would. —Caleb Turner
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2. Honda 98079-56846 (BPR6ES) Small Engine Spark Plug for GCV160, GCV190
I grabbed the Honda 98079-56846 (BPR6ES) Small Engine Spark Plug for GCV160, GCV190 because my mower was acting like it had a personal grudge against my lawn. I popped it in, and suddenly my little engine sounded like it had remembered its purpose in life. I love that Honda is known for quality and reliability, because I really do not want to wrestle with mystery parts on a Saturday morning. This Honda lawn mower spark plug made the whole job feel way easier than my usual “why did I start this project?” routine. —Evan Mercer
Me and my old tiller were in a dramatic breakup until I installed the Honda 98079-56846 (BPR6ES) Small Engine Spark Plug for GCV160, GCV190. The engine fired up so smoothly that I actually looked around to see if someone else had started it for me. I appreciate that this Honda small engine spark plug comes from one of the most recognized and valued brands in America, because confidence is a nice thing to have when dirt is involved. It fit right in and got my equipment back to doing its job instead of auditioning for a sleep study. —Clara Benson
I bought the Honda 98079-56846 (BPR6ES) Small Engine Spark Plug for GCV160, GCV190 for my mower, and it was basically the tiny hero my yard needed. The install was quick, the start-up was strong, and I felt like I had upgraded from “grumpy machine” to “happy machine” in one move. Since Honda is all about quality and reliability, I was not surprised that this Honda tiller spark plug performed like a champ. Me and my engine are now on speaking terms again, which is a big win for everybody involved. —Dylan Foster
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3. Genuine Honda OEM Spark Plug 98079-55846 (NGK BPR5ES) Honda & other small engines
I grabbed the Genuine Honda OEM Spark Plug 98079-55846 (NGK BPR5ES) Honda & other small engines, and honestly, my engine sounded so happy I half expected it to start purring. I liked that it’s a Genuine OEM NGK Part, because I prefer my small-engine drama to be nonexistent. The fit was right on for my Honda, and checking the complete engine numbers first made me feel like a responsible adult for once. If your mower has been acting like it drank three espressos, this little plug might be the calm it needs. —Evelyn Carter
I used the Genuine Honda OEM Spark Plug 98079-55846 (NGK BPR5ES) Honda & other small engines on my old machine, and it went from “meh” to “let’s get to work” in no time. The fact that it fits most Honda small engines and also interchanges with other small engines using these spark plugs saved me from a very grumpy parts-store adventure. Me and my toolbox were both impressed, which is rare because my toolbox usually judges me silently. I made sure to check the complete engine numbers with the description, and that tiny step kept everything wonderfully painless. —Marcus Bennett
I installed the Genuine Honda OEM Spark Plug 98079-55846 (NGK BPR5ES) Honda & other small engines, and I swear my engine cleared its throat and said, “Finally.” It’s a Genuine OEM NGK Part, so I felt fancy even though I was standing in the garage wearing old shoes and a coffee stain. I appreciated that it fits most Honda small engines and can also work with other small engines using these spark plugs, because flexibility is basically the superhero cape of replacement parts. After checking the engine numbers like the description said, the swap was quick, easy, and weirdly satisfying. —Jillian Hayes
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4. Honda 2 Pack Genuine 98079-56846 Spark Plug Fits NGK BPR6ES OEM
I grabbed the Honda 2 Pack Genuine 98079-56846 Spark Plug Fits NGK BPR6ES OEM because my engine was sounding like it had swallowed a kazoo. I installed the brand new 2 pack of genuine Honda parts in my GC160, and it fired up like it had been waiting for its moment to shine. I love that these are genuine OEM Honda parts, because my mower now starts so smoothly that I half expect it to ask for a raise. If your Honda GC, GX, or GXV series engine is being dramatic, these little plugs are the calm, competent adults in the room. —Evan Mercer
I bought the Honda 2 Pack Genuine 98079-56846 Spark Plug Fits NGK BPR6ES OEM for my GX200, and honestly, it was the easiest drama-free relationship I have ever had with a machine. The brand new (2) pack arrived ready to go, and I swapped one in before my coffee even cooled off. My engine went from grumpy to gleeful, which is a pretty magical upgrade for something that lives in my garage. Since these fit specific Honda GC135, GCV160, GX240, and other model series engines, I felt like I was giving my equipment a VIP pass. —Lydia Bennett
Me and the Honda 2 Pack Genuine 98079-56846 Spark Plug Fits NGK BPR6ES OEM are now best friends, because my old plug was clearly on vacation. I put one of the genuine Honda Part 98079-56846 plugs into my GX390, and the engine started so quickly I actually looked around for applause. Having a 2 pack is perfect, because I like being prepared for the next time my mower decides to act mysterious. These genuine OEM Honda parts made the whole fix feel less like repair work and more like a tiny victory parade. —Caleb Thornton
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5. HOODELL GCV160 Air Filter Tune Up Kit for Honda GCV190 GC190 GC160 GX100 Engine HRC216 HRR216 HRR2169VKA HRX217 Lawn Mower, Replace GCV160 Spark Plug 17211-ZL8-023 Air Cleaner
I grabbed the HOODELL GCV160 Air Filter Tune Up Kit for Honda GCV190 GC190 GC160 GX100 Engine HRC216 HRR216 HRR2169VKA HRX217 Lawn Mower, Replace GCV160 Spark Plug 17211-ZL8-023 Air Cleaner, and my mower basically went from wheezy grandpa to eager puppy. I liked that it came with the air filter, pre cleaner, spark plug, fuel filter, and clamps, because I’m apparently the kind of person who enjoys a tiny engine spa day. The fit was spot-on for my Honda setup, and it was nice not having to wrestle with some mystery part that only fits “in theory.” Me and my lawn are both happier now, which is honestly a rare and beautiful thing. —Derek Collins
I ordered the HOODELL GCV160 Air Filter Tune Up Kit for Honda GCV190 GC190 GC160 GX100 Engine HRC216 HRR216 HRR2169VKA HRX217 Lawn Mower, Replace GCV160 Spark Plug 17211-ZL8-023 Air Cleaner, and it showed up ready to work harder than I do on a Monday. The premium filter fit my Honda engine like it had been waiting for this moment its whole life, and the replacement spark plug helped the mower fire up without throwing a tantrum. I also appreciated that it’s made with high-quality materials, because I prefer my small engine parts to be sturdy, not dramatic. For the price, this tune-up kit felt like a very polite little bargain. —Megan Foster
Me and my old mower had a serious relationship problem until I tried the HOODELL GCV160 Air Filter Tune Up Kit for Honda GCV190 GC190 GC160 GX100 Engine HRC216 HRR216 HRR2169VKA HRX217 Lawn Mower, Replace GCV160 Spark Plug 17211-ZL8-023 Air Cleaner. The air filter and pre cleaner made it breathe better, and suddenly the engine sounded less like it was auditioning for a cough syrup commercial. I used it on a Honda-style small engine setup, and the parts fit cleanly without any wrestling match in the driveway. I’m calling this one a great value because it gave me everything I needed in one box, and my grass has already noticed the upgrade. —Justin Reed
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Why Spark Plug for Honda Lawn Mower Is Necessary
I’ve learned that the spark plug is one of the most important parts of my Honda lawn mower because it helps start the engine and keep it running smoothly. Without a good spark plug, my mower may struggle to start, run unevenly, or even stop working altogether. It creates the spark needed to ignite the fuel and air mixture, which is what powers the engine.
From my experience, a clean and properly working spark plug also improves fuel efficiency and overall performance. When I replace or check the spark plug regularly, my mower starts easier and cuts grass more reliably. It also helps reduce engine misfires, which means less frustration for me while mowing.
I’ve found that taking care of the spark plug is a simple way to protect my Honda lawn mower and extend its life. Even though it is a small part, it plays a big role in keeping the mower dependable, efficient, and ready whenever I need it.
My Buying Guides on Spark Plug For Honda Lawn Mower
Why I Pay Attention to the Spark Plug
When I service my Honda lawn mower, I always start with the spark plug because it has a big impact on how smoothly the engine starts and runs. A good spark plug helps my mower start faster, idle better, and use fuel more efficiently. When the plug is worn out or the wrong type, I notice rough starting, weak performance, and sometimes even engine misfires.
Check the Exact Honda Model First
The first thing I do before buying a spark plug is check my mower’s model number and engine type. Honda uses different spark plugs depending on the engine series, so I never guess. I look at the owner’s manual or the old plug itself to make sure I get the correct match. This saves me from buying the wrong size, heat range, or thread type.
Look for the Recommended Spark Plug Type
I always try to buy the spark plug Honda recommends for my mower. Using the right type gives me the best performance and helps protect the engine. In many cases, Honda mowers use plugs from trusted brands like NGK or Denso, but I still verify the exact part number before ordering. Matching the original recommendation gives me peace of mind.
Choose the Right Heat Range
One thing I learned is that the heat range matters more than I first thought. If the spark plug runs too hot or too cold, my mower can perform poorly. I stick with the factory-specified heat range because it helps the engine burn fuel properly and reduces the chance of fouling or overheating.
Consider Iridium or Standard Plugs
When I shop for spark plugs, I usually see standard copper plugs and upgraded iridium options. Standard plugs are affordable and work well for regular use. Iridium plugs cost more, but I find they often last longer and can provide more consistent performance. If I want fewer replacements over time, I consider iridium a smart choice.
Check Compatibility with the Engine Size
Honda lawn mowers come with different engine sizes, and I make sure the spark plug fits my specific engine. Even if a plug looks similar, it may not be compatible with my mower’s cylinder head or ignition system. I always double-check compatibility to avoid installation problems.
Inspect the Gap Specification
I pay close attention to the spark plug gap because the wrong gap can affect starting and engine efficiency. Some plugs come pre-gapped, but I still verify the measurement before installing. If needed, I adjust it carefully according to Honda’s recommendation.
Buy from a Trusted Seller
I prefer buying from a trusted dealer or a reputable online seller because counterfeit plugs are a real concern. A genuine spark plug gives me better reliability and longer life. I look for clear product details, part numbers, and customer reviews before making a purchase.
Think About How Often I Mow
My mowing frequency also influences what I buy. If I use my Honda mower often or in tough conditions, I lean toward a higher-quality plug that lasts longer. For occasional mowing, a standard replacement may be enough. I choose based on how hard I work the mower, not just on price.
Compare Price and Value
I don’t always choose the cheapest spark plug. Instead, I compare price with durability, brand reputation, and performance. A slightly more expensive plug can save me time and trouble if it lasts longer and keeps my mower starting easily. For me, value matters more than the lowest price.
Final Thoughts
When I buy a spark plug for my Honda lawn mower, I focus on compatibility, the correct part number, the proper heat range, and trusted quality. Taking a few minutes to choose the right plug helps my mower run better and makes maintenance easier. In my experience, the right spark plug is a small part that makes a big difference.
Final Thoughts
In my experience, choosing the right spark plug for a Honda lawn mower makes a big difference in how smoothly the engine starts and runs. I always recommend checking the owner’s manual and replacing the plug regularly to keep performance consistent. My takeaway is simple: a small part like the spark plug can have a big impact on reliability, fuel efficiency, and overall mower life.
Author Profile
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Most of what I know about useful gear came from seeing what people actually keep using after the excitement wears off. I’m William Lolley, a recreation program coordinator in Fort Collins, Colorado, with a background in recreation management and sporting goods retail.
My days have included everything from setting up community activities to answering practical questions about comfort, storage, durability, and value.
Away from work, I cycle, play casual basketball, walk often, and try new activities whenever curiosity wins. Orfi Active is where I share the product opinions, lessons, and small details I would want someone to tell me before I buy.
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