E3.12 diamond fire small engine spark plug. Liftetime guarantee. For all 2-16 hp 4 cycle small engines, replaces champion 5843, cj6, cj6y, rcj6, rcj6y, cj7y, rcj7y, cj8, cj8y, rcj8, rcj8y, replaces ngk: bpm4a, bpmr4a, bpmr4a10, bmr6a, bpm6a, bpmr6a, bpm6a10, bpm6y, bm7, bm7a, bmr7a, bpm7a, bpmr7a & bpm7y.
- Diamond-Fire Technology-Lifetime Warranty
- Greater Fuel Economy (up to 13%)
- More Horsepower (up to 12%)
- Fewer Emissions (cut by more than half)
- Quicker Starts
