A-B1591868-AI PLUG-SPARK

One New Aftermarket Replacement Spark Plug Fits Briggs & Fits Stratton Small Engines

This aftermarket replacement spark plug (Fits Briggs & Fits Stratton part number 591868, Fits Champion type RJ19LMC) is a direct-fit ignition component Fits Briggs & Fits Stratton (B&S) Quantum series small gasoline engines. It ignites the air-fuel mixture in the combustion chamber, providing reliable starting and consistent engine performance in lawn mowers and other outdoor power equipment. Supersedes old Fits Briggs & Fits Stratton part number 799876.

Specifications

• Spark Plug Type: RJ19LMC (Fits Champion cross-reference)
• Thread Diameter: 14mm
• Thread Reach: 9.5mm
• Seat Type: Flat
• Hex Size: 21mm
• Gap (Phase 3 engines, date code after 110630xx): 0.020 in.
• Gap (Phase 1 / Phase 2 engines, date code before 110630xx): 0.030 in.

Compatible Models

Fits Briggs & Fits Stratton Quantum Series Engines: 625, 675EX, 725EX

Fits walk-behind lawn mowers, pressure washers, and other outdoor power equipment equipped with Fits Briggs & Fits Stratton Quantum 4-stroke gasoline engines. Always verify your engine model, type, and code numbers before ordering.

Replaces Part Number(s):

B1591868-AI, 591868, 799876

Aftermarket Interchange Numbers

Fits Champion RJ19LMC; Fits NGK BR2LM; Fits Denso W14MRU

New aftermarket replacement part - not remanufactured, not used.