Ignition cable kit for Mercruiser 5.0L/5.7L MPI V8 (2002+) & Volvo Penta V8 5.0L/5.7L GM-MPI. Fits systems: Delco EST (MerC + Volvo Penta), Mercruiser V8 Thunderbolt. Fits all Mercruiser small block (5.0-5.7L) and big block (7.4)L engines with Thunderbolt ignition except for the 454 Hi Performance.