Sierra 18-8828-1 Wiring Plug SetSierra replacement engine parts are manufactured to meet or exceed OEM requirements.Features: For MerCruiser 5.0L MIE MPI V8 with Delco HEI ignition system; Ignition Type: Delco HEI; Wire Lengths: (2) Spark Plug Wires 22"; (2) Spark Plug Wires 27"; (2) Spark Plug Wires 31"; (2) Spark Plug Wires 36.5"; (1) Coil Wire 21"; Interchangeable with: CDI; 631-0011; Indmar; 751104; 756004; Mallory; 9-28009; MerCruiser Stern Drive; 84-863656A1;