High Performance Tune Up Kit For Mercruiser Chevy V8 454 Magnum and 502 Magnum with Electronic Fuel Injection (EFI). Not for engines with Vortec heads. Not for Thunderbolt IV and V Mercruiser Ignitions.
The finest tune up kit on the market for your engine! This tune up kit will give your engine an increase in performance, fuel economy and better idle quality.There is no better performance improvement available for such a low price! This hi-performance tune up kit should be installed on all performance engines. "Spiral Wound" high performance/low resistance spark plug wires. Pre Gapped high performance NGK V-Power "resistor" spark plugs with a projected nose # UR55 2248. Rynite distributor cap with brass terminals. Rynite rotor with a brass terminal. The spark plug wires are numbered 1-8 at both ends for easy installation and easy spark plug changes. The spark plugs are pre-gapped. 3573 (three five seven three).