10Pcs RJ19LM Spark Plug Replacement for Champion J19LM, Sparkplug Replacement for BS 796112 802592 5095K 796112S, for Lawn Mower Engine 492167 591040 591868 799876 802592S

What It Is

This is a 10-pack of RJ19LM spark plugs, a direct replacement for Champion J19LM and compatible with many Briggs & Stratton, Tecumseh, and Kohler small engines. Designed for lawn mowers, generators, pressure washers, and other outdoor power equipment.

Fitment & Compatibility

• OEM cross-references: Briggs & Stratton 796112, 802592, 5095K, 796112S; also fits engines using 492167, 591040, 591868, 799876, 802592S.
• Thread size: 14mm x 3/4" reach (standard for most walk-behind mowers and small engines). Gap is preset at 0.030" – verify with a feeler gauge before installing.
• What to check: Confirm your engine’s spark plug socket size (typically 13/16" or 5/8"). This plug is not for large V-twin or overhead valve (OHV) engines requiring a longer reach or different heat range.
• Brand fit: Best for Briggs & Stratton, Craftsman, Husqvarna, MTD, Troy-Bilt, and John Deere with compatible engine models. Avoid if your manual calls for a resistor-type plug (R suffix) – these are non-resistor.

Key Things to Know

• Quality: Budget-friendly 10-pack – good for replacing plugs across multiple machines or storing spares. Not premium iridium or platinum; copper-core standard.
• Installation difficulty: Easy – just remove old plug, gap check, hand-thread, and torque to ~15-20 ft-lbs. Over-tightening can strip threads.
• Common gotchas: Some users report occasional duds – test each plug before installing. The preset gap may be off; always re-gap. Do not use anti-seize on these copper plugs (increases risk of over-torquing).
• Performance: Works fine for standard mowers; may cause slight misfire in high-compression or high-RPM engines (e.g., some generators).

Should You Buy It

Buy this 10-pack if you maintain multiple small engines (lawn mowers, trimmers, etc.) and want a cost-effective, reliable copper plug that matches OEM specs. Skip it if you need a single high-performance plug for a premium engine or if your manual requires a resistor-type spark plug.