Accel ‘U-Groove’ Spark Plugs, Accel 2410A, shovels from 78-81

1340cc Shovelhead 80-81

1200cc Shovelhead late 78-80

OEM 5R6A, Accel 2410A --(2Stück)

Accel ‘U-Groove’ Spark Plugs
The ground electrode builds the spark to a
“ball of fire” flame providing a smoother idle
and better combustion. Five-rib insulator prevents
flashover and misfire, copper glass inner
seal and electric heat seal prevent combustion
leakage and fused copper/nickel center electrode
has a wide heat range.