Mercury MerCruiser Ignition Wire Kit 816761Q17
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Mercury / MerCruiser Quicksilver Ignition Wire Kit ā 816761Q17
The Mercury Quicksilver 816761Q17 Ignition Wire Kit is a genuine OEM spark plug wire set designed for MerCruiser V8 gasoline engines equipped with Thunderbolt ignition systems. It transfers high-voltage ignition current from the distributor and coil to the spark plugs, ensuring proper spark delivery and reliable engine performance.
Key Specifications
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Part Number: 816761Q17
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Mercury Format: 84-816761Q17
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Component Type: Spark plug ignition wire set
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Ignition System: Thunderbolt IV / Thunderbolt V
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OEM Brand: Mercury Marine / Quicksilver
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Kit Contents: Complete set of spark plug wires with molded plug boots
Compatible Engines / Applications
Commonly used on MerCruiser GM-based V8 engines, including:
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5.0L V8 (305 CID)
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5.7L V8 (350 CID)
Typically installed on left-hand rotation MerCruiser engines equipped with Thunderbolt IV or V ignition systems, generally produced 1993ā2003.
Function
The ignition wire kit carries high-voltage spark energy from the ignition coil and distributor to each spark plug in the correct firing order. Properly functioning ignition wires help provide:
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Reliable engine starting
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Smooth idle and acceleration
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Consistent spark delivery to all cylinders
The wires are built with marine-grade insulation to withstand heat, vibration, and moisture common in marine engine compartments.
Symptoms of Worn Ignition Wires
A deteriorated ignition wire set may cause:
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Engine misfires
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Hard starting
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Rough idle or hesitation
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Reduced engine performance
Replacing the ignition wire kit restores proper spark delivery and ignition performance.
ā ļø Fitment Tip:
Always verify compatibility using the engine model and serial number. MerCruiser engines may use different ignition wire sets depending on engine rotation direction, ignition system version, and production year.
OEM parts ship same or next day for fast Canada wide shipping.
Technical Specifications:
- Type: Ignition wire kit
- Compatible with: Mercury MerCruiser marine engines
- Part Number: 816761Q17
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3ā4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us ā and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity ā and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.