Improved fuel efficiency & throttle response
100% pre-fired to assure highest possible quality
Exceptional strength & thermal conductivity
Five rib insulator prevents flashover
Denso Nickel Spark Plugs (like this K20PR-U11) are made to the highest level of quality available in the field, with machine-rolled threads that prevent seizing or cross-threading during installation or removal. For the most complete combustion and the least amount of flame dissipation, there’s only one choice: Denso.
Cast Iron: 26-30 lb. ft. Aluminum: 15-22 lb. ft.
Spark Plugs – Nickel