Product Details Stens is an industry leader in replacement parts specifically designed for the outdoor power equipment, industrial equipment and agricultural equipment industries. This plug fits various models of ATVs and Marine Motors. Designed to meet exacting standards, this replacement spark plug is a reliable solution to start your engine time after time. Refer to equipment owner's manual for specific plug specifications and recommended timing of replacing spark plug(s). Replaces the following spark plugs: NGK: BPR5ES Champion: RN11YC4 Bosch: WR8DS Denso: W16EPR-U Torch: F5RTC Package contains one (1) spark plug Fits specific models of: ATVs and Marine Motors Height: 55mm Terminal Type: Removable Hex Size: 13/16 in.(20.8mm) Replace plug(s) when recommended in equipment owner's manual