Tune-Up Kit Delco HVS V8 Tri-Pak | United Marine 1-217 Delco HVS V8 Tri-Pak Tune-Up Kit | United Marine 1-217 Premium marine tune up kit includes distributor cap, rotor, and spark plug wires for GM V8 engines with Delco HVS distributors. Kit fits Mercruiser V8 engines with Delco HVS ignition systems Kit includes MEGA-MAG 8mm SSC silicone spark plug wire set, heavy-duty distributor flat cap and rotor with brass contacts, dielectric silicone grease, and wire separators Wire set has straight boots on the cap end and 90 degree boots on the plug end