Thunderbolt V8 Big Block Plug Wire Set | United Wire 113 Nuts & Bolts Replaces GM 4

Replaces GM 4

Replaces Mercury 35-16595

Universal Heat Exchanger | Seakamp Engineering 201027

DANA Race 8-M-1-18

Also includes shaft adaptor o-ring and fill plug

Thunderbolt V8 Big Block Plug Wire Set | United Wire 113 Nuts & Bolts Replaces GM 4United Ignition Wire Corp V8 Big Block Thunderbolt Spark Plug Wire Set 113 8mm ignition wire set fits Mercruiser 8 cylinder GM big block marine engines with Thunderbolt distributors. Mercruiser Thunderbolt big block marine spark plug wire set Fits Mercruiser 454 and 502 big block engines from 1982 98 with Thunderbolt ignition systems Includes ignition coil wire 180 degree spark plug boots 90 degree distributor boots 8mm SSC 100% Silicone wire for