Accel Accel, U-groove spark plugs

Description

Accel Accel, U-groove spark plugs

L78-E82 FL; L78-79 FX; 84-99 Evo Big Twin (NU)

HD 5R6A. Standard heat range. 14mm threaded, long reach. Used with 21mm spark plug socket. Note: For colder plugs. for high speed riding, see 518030.