Sierra 18-5273 MerCruiser Tune Up Kit for V8 Thunderbolt HEI Ignitions
Sierra high-quality engine parts are designed to meet OEM specifications. Fits GM V-8 engines with Thunderbolt IV & V HEI ignitions.
- Voltage Regulator 18-5710
Kit Includes:
- Rotor 18-5431
- Distributor Cap 18-5395
- Gasket
Interchangeable with:
- GLM
- Mercury
- Mallory
- Pro Marine
- Redline