Description
Keep your classic Harley running at peak performance with spark plugs engineered specifically for ’57-’78 XL models. The DRAG Specialties E18-6660SDS delivers reliable ignition and extended service life through premium materials and precision manufacturing, eliminating the guesswork of universal replacements. Built to OEM specifications, these plugs ensure consistent firing and dependable starts in any riding condition.
- Fitment: ’57-’78 XL Harley-Davidson
- MPN: 2103-0206
- Insulator: 95% pure alumina
- Heat shock resistant
- Multi-rib insulator design
- Eliminates flashover
- Nickel-plated housing
- Corrosion-resistant finish
- Copper core electrode
- Superior electrical conductivity
- Multilayer gasket seal
- Heat-crimped assembly
- Gas-tight fitment
- Black ceramic body
- Iconic red DRAG logo
- Display-ready packaging







