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 | |||
|---|---|---|---|---|
| 1965-1974 | Harley-Davidson | Electra Glide FL | - | - |
| 1953-1957 | Harley-Davidson | Hydra Glide EL | - | - |
| 1949-1952 | Harley-Davidson | EL | - | - |
| 1958-1964 | Harley-Davidson | Duo Glide FL | - | - |
| 1958-1964 | Harley-Davidson | FLH Duo-Glide | - | - |
| 1971-1974 | Harley-Davidson | FX Super Glide | - | - |
| 1965-1969 | Harley-Davidson | 1200 Electra Glide FLH | - | - |
| 1970-1974 | Harley-Davidson | FLH Electra Glide | - | - |
| 1949, 1950, 1951, 1953, 1954, 1955, 1956, 1957 | Harley-Davidson | Hydra Glide FL | - | - |
| 1974 | Harley-Davidson | FXE Super Glide | - | - |
| 1948 | Harley-Davidson | FL | - | - |
