RJ19LM Spark Plug for Champion RJ19LM J19LM Brigs Straton 796112 796112S 802592 5095K NGK B2LM Spark Plug 2 PACK

What It Is

This is a 2-pack of RJ19LM spark plugs, a common replacement for small engines in lawn mowers, tractors, generators, and pressure washers. It delivers the spark to ignite the fuel-air mixture, keeping your engine running reliably.

Fitment & Compatibility

Before buying, confirm your engine uses a 14mm thread diameter and 19mm reach (thread length). The RJ19LM cross-references directly with Champion J19LM, J19LM, and J8C, plus Briggs & Stratton part numbers 796112, 796112S, 802592, and 5095K. It also replaces NGK B2LM and Autolite 216. Check your owner’s manual or the old plug’s number—avoid assuming all small engines use this plug (e.g., some Honda or Kawasaki engines require different heat ranges or thread lengths). Measure the thread depth if unsure; the RJ19LM is a standard short-reach plug.

Key Things to Know

• Quality: These are budget-friendly aftermarket plugs, not OEM Champion. Expect reliable performance for typical homeowner use, but may not last as long as premium plugs in heavy-duty or commercial applications.
• Installation: Easy—remove the spark plug wire, unscrew the old plug with a 13/16” socket, gap the new one to 0.030” (check with a gap tool), and hand-tighten plus 1/2 turn. Over-tightening can crack the porcelain.
• Common Gotcha: The gap may be pre-set but verify it anyway. Also, ensure the plug wire boot fits snugly; some aftermarket plugs have slightly different terminal shapes that can cause loose connections.
• 2-Pack Value: Buying two saves a trip if you have multiple engines or want a spare. But if you only need one, a single plug is cheaper.

Should You Buy It

This 2-pack is a solid choice for DIY homeowners with a Briggs & Stratton, Tecumseh, or similar small engine needing a standard RJ19LM plug. It’s affordable, easy to install, and gets the job done for routine maintenance. Skip it if you demand OEM longevity or need a plug for a high-performance or commercial mower.