Questions & Answers for: Harley Davidson FXSTS - FXSTSI Springer Softail 800000 039

plug gap for a Champion plug in a 2004 Springer .039'' to .043'' MODEL TYPE GAP (IN.) GAP (MM) All XL 6R12 use 0.038-0.043 inches or 0.96-1.09 mm XR 10R12X 0.032-0.038 0.81-0.97