Champion 821 L77JC4 R50/2 RV 250 Olympique 300T KX450 H1 Mach III Copper Plus Spark Plug

Champion 821 L77JC4 R50/2 RV 250 Olympique 300T KX450 H1 Mach III Copper Plus Spark Plug
Shell:
- Thread Size: 14mm
- Seat Type: Gasket
- Reach: 12.7mm (1/2")
- Hex Size: 13/16" (21mm)
- Terminal Type: Solid
- Gap: .039" (1.0mm)
Center Electrode:
- Material: Nickel
- Type: Standard
- Size: 2.5mm
Ground Electrode:
- Material: Nickel
- Type: Cut Back
Resistor: No
Heat Range: 77
Torque: 26 - 30 lb. ft. (Cast Iron), 18 - 22 lb. ft. (Aluminum)
Conventional spark plug with nickel alloy electrodes.
Copper core center electrode allows for increased conductivity and heat control.
For use with:
- Ski-Doo RV 250 (1976)
- Ski-Doo Olympique 300T (1978)
- Ski-Doo Citation 300 (1978)
- KTM 50 Mini Adventure (1998-1999)
- Cobra KING (1997)
- Kawasaki KX450 (1974)
- Kawasaki H1 Mach III (1972-1975)
- Kawasaki F7 (1971-1975)
- BMW R50/2 (1960-1969)
Manufacturer: Champion
Model Number: Copper Plus
Part Number: 821, L77JC4
Also Known As:
- DENSO W31FS, 4065
- NGK B10HS, B9HS, B9HS10, B9HV, 2721, 3626, 5810, B8HVX, B9HCS, B9HVX
- ACDelco M40FFX, M41FF
- Motorcraft AE091X, AV091X4
- Bosch W4A, W4A1, W4A2, W4A5, W4AC, W4AS, W3AC
- Autolite 2634
- Champion Spark Plug L3G, L4G, L77J, L77J4, L77JC
- Motorcraft AE901Racing
- Beru Z37