Spark Plug Wire Set, 8 mm mag
OE Quality Wire Sets, made in USA.
GM V8 Engines w/ Delco EST Ignition 90º Plug Boot
Black wires and boots.
Replaces MerCruiser 84-816608Q78
OEM Part numbers for reference only.
To fit MerCruiser Black Scorpion Tow Sports w/ Delco HEI ignition (1997‑1998)
May fit other GM V8 engine w/Delco EST Ignition.
If you are unsure of the application, please enter the make, model and serial number information in the comments section of the checkout.