Description
Features
- Copper Plus spark plug has a copper core center electrode that allows for accurate control of heat range, optimizing performance and longevity of the spark plug
- Patented SAC-9 semi-conductor resistor for maximum EMI and RFI suppression
- Patented Ultraseal coated shell for rust prevention
- Made in the USA
| Position | Notes | |||
|---|---|---|---|---|
| 1959-1971 | Harley-Davidson | XLH900 | - | - |
| 1957-1958 | Harley-Davidson | Sportster 900 XLH | - | - |
| 1958-1978 | Harley-Davidson | XLCH | - | - |
| 1972-1978 | Harley-Davidson | XLH1000 | - | - |
| 1977-1978 | Harley-Davidson | XLCR Cafe Racer | - | - |
| 1977-1978 | Harley-Davidson | XLT | - | - |
