Sierra 18-8832-1 MerCruiser HEI V8 Spark Plug Wire SetFor MerCruiser 454 EFI, MAG MPI, 502 EFI, MAG MPI engines with the Delco HEI ignition systems. Sierra aftermarket parts are manufactured to meet or exceed OEM requirements.Wire Lengths: (1) Spark Plug Wire 29"; (3) Spark Plug Wires 33"; (2) Spark Plug Wires 39"; (2) Spark Plug Wires 45"; (1) Coil Wire 9"; Interchangeable with: Mallory; 9-28011; MerCruiser Stern Drive; 84-816608Q68; 84-816608A68; CDI; 631-0006;