Product Description Brand: Champion Model: CJ8 Type: Copper-core spark plug Part Number: CJ8 (sometimes cross-referenced as 841, J8C, or CJ8Y depending on application) Thread Size: 14mm Reach (thread length): 3/8 inch (9.5 mm) Hex Size: 13/16 inch (20.6 mm) Gap: Factory set around 0.030 inch (0.76 mm) — verify for your specific engine Seat Type: Gasket seal Typical Applications Briggs & Stratton, Tecumseh, Kohler, Homelite, and Toro small engines Common in lawnmowers, tillers, and portable generators Features Nickel alloy center and ground electrode for reliable ignition Copper core optimizes performance and heat transfer Corrosion-resistant zinc-plated shell Pre-gapped for convenience (usually 0.030")
eBay