Prestolite V6 Screw Down Cap Tune Up Kit 18-5274
Tune-up kit includes cap and rotor fits Mercruiser V6 marine engines with Thunderbolt distributors.
- For Mercruiser V6 HEI Thunderbolt ignitions
- Includes 18-5396 distributor cap and 18-5432 rotor
- Replaces Mercruiser 815407Q5
- Replaces Mallory 9-29317
