Accel, U-groove platinum spark plug set. 12mm - 99-17 Twin Cam; 86-22 XL (excl. XR1200) (NU) 991358 Heavy Duty Applications are recommended

Heavy Duty Applications are recommended for bikes operating at or near the manufacturer's maximum load rating over 50% of the time

032" copper head gaskets &

For 89-03 XL models (except Hugger models)

and surpass 17920-53A (hydraulic unit) and 18522-53A (tappet)

garage of in thuis

Accel, U-groove platinum spark plug set. 12mm - 99-17 Twin Cam; 86-22 XL (excl. XR1200) (NU) 991358 Heavy Duty Applications are recommendedHD 6R12PP. 12mm threaded. Used with 18mm spark plug socket. Equipped with a U groove platinum tip. Platinum plugs are more durable, have a wider heat range and will work with a lower voltage. By maintaining a precise gap over a longer period it will provide a longer life than regular spark plugs. Custom replacement for OEM 32362 04A (regular) and 32329 97 (platinum version).