Description
A quality cap and rotor are foundational to reliable spark delivery in any HEI ignition system. The MSD Black Extreme Output kit replaces wear-prone OEM components with precision-machined brass terminals and a sealed design that resists moisture and contamination. This bolt-on upgrade delivers consistent ignition timing and cleaner engine bay aesthetics—essential for both street cruisers and dedicated performance builds.
MSD’s non-vented, coil-in-cap design eliminates common failure points in aging distributors while maintaining full compatibility with MSD Extreme HEI systems. Installation requires no fabrication; simply swap your existing cap and rotor for immediate performance gains and extended component lifespan.
- MSD Extreme Output cap/rotor kit
- GM HEI distributor specific
- HEI style brass terminals
- Non-vented, coil-in-cap design
- Black powder-coated finish
- Sealed moisture protection
- Bolt-on installation
- OEM replacement
- MPN: 84025
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