Description
Reliable spark plugs are non-negotiable for consistent ignition timing and engine performance on your Big Twin Harley. These DRAG SPECIALTIES plugs deliver the thermal stability and electrical integrity your ’75-’99 BT demands, with a design engineered to handle the heat cycling and vibration of high-performance riding. OEM-quality construction means fewer misfires, better fuel economy, and the durability to go the distance.
- Fits: 1975-1999 Big Twin Harley models
- 95% pure alumina insulator
- Multi-rib design prevents flashover
- Heat shock resistant
- Copper core electrode
- Nickel-plated housing
- Resists oxidation and corrosion
- Multi-layer gaskets
- Gas-tight, leak-free seal
- Heat-crimped construction
- Superior electrical conductivity
- Extended service life
- Black ceramic body
- MPN: 2103-0198







