Best Lawn Mower Spark Plug in 2023: Top 15 Picks

Sometimes it might be quite difficult to find the best lawn mower spark plug. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this lawn mower spark plug buying guide.

Our 15 Recommendations:

15 Best Lawn Mower Spark Plug Reviews:

SaleBestseller No. 1
Briggs & Stratton Spark Plug For OHV Engines 5092K
  • Part# 496018s in display packaging
  • Replaces Briggs & Stratton Service Part #496018S
  • For Selected OHV Engines
  • Replaces RC14YC
  • Genuine Briggs & Stratton Part
Bestseller No. 2
Autolite Xtreme Start Iridium Lawn & Garden Spark Plug Automotive Replacement, XST458DP
  • CREATED FOR OUTDOOR WORK: To get through a full season of outdoor work, you need reliable performance from your lawn equipment. Autolite Xtreme Start Iridium spark plug designed for lawn and garden / outdoor power equipment applications.
  • CONSTRUCTION: Autolite Xtreme Start Iridium spark plug has an anti-corrosive nickel-plated shell and 0.6mm diameter iridium-enhanced finewire tip design offers exceptional fouling resistance providing reliable starting in any season or weather condition
  • MAXIMUM PERFORMANCE: Up to 26 % quicker engine starts than leading standard plugs providing less battery/starter wear and less pull cord effort required
  • FUEL EFFICIENCY: Up to 21 percent less HC emissions than a standard plug providing better fuel efficiency and horsepower
  • AUTOLITE ADVANTAGE: Autolite has provided the automotive aftermarket and Original Equipment manufacturers the highest quality ignition products. Autolite has been in operation for over 100 years and has produced more than 11 billion spark plugs and glow plugs
Bestseller No. 3
Hipa RJ19LM Nickel Copper Core Standard Spark Plug Replace for Champion J19LM RJ 19LM Briggs & Stratton 796112 802592 5095K Toro Recycler 22 Lawn Mower(4 Pack)
  • Hipa B3LMCU Spark Plug Replace for Champion J19LM RJ19LM; Briggs & Stratton 796112 796112S 802592 5095K; NGK B2LM
  • Hipa Copper core Spark Plugs are constructed for longer life and optimum performance:Trivalent metal plating provides superior anti-corrosion and anti-seizing properties; Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer; Copper core aids in heat removal; Triple seals prevent leakage
  • Hipa Copper core Spark Plugs Shell Specifications: Thread Diameter: 14mm; Seat Type: flat Gasket; Reach: 9.5mm; Hex Size: 20.8mm; Terminal Type: Solid; Gap: 0.7mm
  • Hipa Copper core Spark Plugs Center Electrode Material: Nickel-Copper core; Type: Standard; Ground Electrode Material: Nickel-alloy;Type: U-Groove
  • Hipa Copper core Spark Plugs Specifications Resistor: NO ; Heat Range:3 ; Longevity: Maintenance and cleaning every 25 hours
Bestseller No. 4
Briggs & Stratton 591868 Spark Plug Replaces 799876, Grey
  • Briggs & Stratton 591868
  • New OEM Spark Plug
  • Genuine Briggs & Stratton Part
  • Replaces Old Briggs # 799876
  • material type: Plastic, No substitutes when it comes to keeping engine powered equipment healthy, to maximize engine life
Bestseller No. 5
Powtol (Pack of 2) RJ19LM Spark Plug for Briggs & Stratton 796112 802592 5095K Champion J19LM (868)
  • Replace for Champion RJ19LM J19LM (868)
  • Replace for Briggs & Stratton 796112 802592 5095K
  • Package include 2 spark plugs
  • To ensure the optimal performance of your engine, please verify your engine's model and part numbers before ordering the parts.
Bestseller No. 6
Hipa 4 Pack 491055S Spark Plug RC12YC Compatible With Briggs 491055 72347GS 594056 491055MA 805015 M78543 KR5TC BCPR6ES Kohler 12-132-02 1213202-S Lawn Mower Tractor MTD 759-3336
  • RC12YC Spark Plug Replaces Old Briggs # 491055s, 491055, 805015, 72347GS , 72347, Compatible with RC12YC, BCPR6ES, Torch KR5TC
  • Replaces Kohler 12 132 02, 12 132 02-S, 12 132 01-S, 25 132 12-A, 25 132 12-S, 24 132 01-S ; Replaces MTD 759-3336
  • Replaces 21525900, 08811700, 21536800, 21534100, 21531100, 21537800; Replaces Gravely 21531100, 21534100, 21536800; Replaces Husquvrana 531308128
  • We have been improved by one level on the basis of the above, the copper core central electrode is opened in U-shaped groove with resistance, the Plating has superior anti-corrosion and anti-seizing properties
  • Compatible with Kohler Engine CH11S CH11 CH12.4 CH13S CH13ST CH13T CH13PS CH13PT CH14 CH14S CH15GS CH20
Bestseller No. 7
Craftsman CMXGZAM250012 Current Walk 2 BPR6ES 751-10292 Spark Plug, Black
  • For engines using part #F6RTC, 951-10292 / 751-10292. Replaces 7133961
  • Spark Plugs that become worn or built-up with carbon will decrease the engine’s fuel efficiency and power.
  • Tools required: spark plug Wrench
  • Replace the spark plug each season.
SaleBestseller No. 8
E3 Spark Plugs E3.20 Lawn and Garden Spark Plug, Pack of 1
  • FOR OPTIMAL PERFORMANCE: Spark plug that fits a variety of 4-cycle engines, designed to increase power, reduce fuel consumption, and improve hydrocarbon emissions
  • PATENTED TECHNOLOGY: DiamondFIRE features a unique design with an edge-to-edge spark path, which allows replenishment of the spark zone with a fresh fuel/air charge
  • INCREASED DURABILITY: Near elimination of performance inhibiting carbon deposits, which dramatically extends the life of the spark plug
  • REPLACES: Champion RC12YC, RC14YC; NGK BCP4ES-11, BKR4E, BKR4E-11, BKR5E, BKR5E-11, BKRES, BKR6EKB-11, FR4, FR5
  • Compatible with vehicle type: lawn and garden applications
SaleBestseller No. 9
NGK Spark Plug, NGK BKR5E-11, ea, 1, One Size
  • Package Dimensions: 2.2 cms (L) x 2.8 cms (W) x 8.6 cms (H)
  • Product Type: Spark Plug
  • Package Quantity: 1
  • Country Of Origin: Japan
Bestseller No. 11
Champion RJ19HX Lawn & Garden Equipment Engine Spark Plug Genuine Original Equipment Manufacturer (OEM) part
  • This part is compatible with models including; 125K02-0273-E1,125K02-0500-E1,125K07-0263-E1,126T02-1045-B1,123K02-0481-E1,123K02-0592-E1,124T02-0736-E1,126T02-1024-B1,125K02-0578-E1,124T05-3848-B2,124L05-0975-F1,125K02-0690-E1,124T02-3853-B2,124T02-3847-B2,123K02-0609-E1,126K02-0676-B1,125K02-0253-E1,125K02-0512-E1,126T02-0761-E1,125K02-0370-E1,125K02-0477-E1,124T05-0904-B1,122K02-0169-E1,125K07-0274-E1,125K02-0542-E1,125K02-0303-E3,125K02-0137-E1,125K02-0336-E1,125K05-0345-E1,126T05-1071-E1
  • Spark plug RJ19HX produces the spark that ignites the fuel in the engine
  • Genuine Original Equipment Manufacturer (OEM) part.
  • This spark plug (part number RJ19HX) is for lawn and garden equipment engines
Bestseller No. 12
Briggs & Stratton 19576S Spark Plug Wrench 8-Inch Replaces 19374S/19374/690966/19576
  • Briggs & Stratton 19576S
  • Genuine Briggs & Stratton Spark Plug Wrench
  • Fits Many Briggs & Stratton Engine Series
  • Replaces Old Briggs # 19374S, 19374, 690966, 19576
  • Sized to fit 13/16" spark plugs on one side and 5/8" spark plugs on the other, has been stretched from 5-1/2" to a full 8" (14 cm - 20 cm)
Bestseller No. 13
Champion Copper Plus 71 Spark Plug (Carton of 1) - RC12YC for 1984-2020 Toyota Corolla
  • Copper Plus - Dependable Performance and Durability
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Inhibits corrosion
  • Built to ISO and SAE standards for proven performance
SaleBestseller No. 14
Champion Spark Plug 4 Pack for Craftsman # 71G RC12YC-4pk
  • Genuine, OEM Champion Replacement Part
  • Champion replacement spark plug, part number 71G
Bestseller No. 15
E3 Small Engine Spark Plug
  • 10mm Thread, ½” Reach, Gasket Seat
  • Quicker Starts; Saves fuel
  • More Power. Thread Reach: 0.500"
  • Reduced Emissions
  • Compatible with vehicle type: lawn & garden equipment

Last update on 2023-06-05 / Affiliate links / Images from Amazon Product Advertising API

How to find the best lawn mower spark plug?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best lawn mower spark plug for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good lawn mower spark plug recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

  • What features does the lawn mower spark plug need to have to be perfect for my needs?
  • What is my budget?
  • Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for lawn mower spark plug to find what you’re looking for:


In some cases, the brand of lawn mower spark plug is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.


The features in any given lawn mower spark plug are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.


Customer reviews about lawn mower spark plug are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.


Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare lawn mower spark plug quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.


Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.


The quest to find the best lawn mower spark plug can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.