The Spark Plugs have a unique look with their black ceramic body and bold red logo/script
- Insulator is made of 95% pure alumina and features strong resistance to heat shock and superior insulation
- Multi-rib design of insulator eliminates flashover
- Nickel-plated housing prevents oxidation and corrosion
- Multilayer gaskets and heat-crimping process ensure a leak-free, gas-tight fit
- Copper core electrode prevents oxidation and corrosion and has good electrical and heat conductivity for long spark plug service life
- Packaged in an attractive blister pack
- Replaces Harley-Davidson 3-4 spark plugs or NGK R5670-5
- sold as pair
Note
Fits Harley-Davidson Big Twin 48-74 (Panhead / Shovelhead)