Quicksilver spark plug wire set for MerCruiser 454/502 V8 is a complete set of eight red spark plug wires for select GM-based MerCruiser V8 engines. The set is intended for 454 CID/7.4 liter and 502 CID/8.2 liter engines with Thunderbolt IV or Thunderbolt V ignition systems.
The wires are custom-fitted for the correct spark plug locations on the specified engines and are supplied with boots at the spark plug end. Applications include documented MerCruiser models from 1981-1997, including select 330, 340 MIE, 450, 454 Mag, 525 SC, 7.4L, 502 Mag, and 8.2L MIE models.
Part number 84-816608Q61 replaces the previous numbers 84-42841A5, 84-43376A1, 84-43376A14, 84-43376A2, 84-813720A2, 84-816608A61, 84-816608K61, 84-816608T61, 84-816761A2, and 84-816761A15.
Compatibility depends on engine model, production year, ignition system, and serial number range. Please verify your engine's serial number and existing part number before ordering.
Key featuresOriginal Quicksilver spark plug wire set
Part number: 84-816608Q61
Complete set of 8 red wires
For GM-based MerCruiser 454/502 CID V8 engines
For Thunderbolt IV and Thunderbolt V ignition
Documented application period: 1981-1997
Wires fitted to the engines' spark plug locations
Check engine model and serial number before purchase
