OEM Quicksilver 816761Q17 Spark Plug Wire Kit for MerCruiser 5.0L/5.7L Thunderbolt IV/V
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Description
Description
Quicksilver 816761Q17 replaces the ignition wires on selected MerCruiser GM 305/350 CID V8 engines with Thunderbolt IV or V ignition.
Application and details
- Verified examples: 5.0L Thunderbolt IV, 0B774445–0F600999, and 5.7L Alpha Thunderbolt IV, 0B773305–0F600999, with the ignition amplifier mounted on the distributor.
- For those early Thunderbolt IV applications, an exhaust-elbow-mounted amplifier requires a different wire kit.
- Also cataloged for 5.0L Gen+ Thunderbolt V, serial 0L015751–0W300009.
- These are ignition wires; spark plugs are separate.
Manufacturer part number: 816761Q17
Confirm engine serial number, ignition system and the original wire-set part number before ordering.



