Mercruiser Thunderbolt Ignition HEI V8 Tune Up Kit | Sierra 18-5273
Mercruiser Thunderbolt Ignition HEI V8 Tune Up Kit | Sierra 18-5273
Tune-up kit includes cap and rotor fits Mercruiser V8 marine engines with Thunderbolt distributors.
- For Mercruiser V8 HEI Thunderbolt ignitions
- Includes 18-5395 distributor cap and 18-5431 rotor
- Replaces Mercury 805759T3, 805759Q3
- Replaces Mallory 9-29350
- Replaces Sierra 18-5249
