Accel, U-groove platinum spark plug set. 12mm - 99-17 Twin Cam; 86-22 XL (excl. XR1200) (NU) 991358 032" copper head gaskets &

032" copper head gaskets &

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

1999-Later FXST

Used with universal solo seat springs and mount brackets

Accel, U-groove platinum spark plug set. 12mm - 99-17 Twin Cam; 86-22 XL (excl. XR1200) (NU) 991358 032" copper head gaskets &HD 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).