Mercury MerCruiser Quicksilver Serpentine Belt 8M0045986
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Mercury / MerCruiser Quicksilver Serpentine Belt ā 8M0045986
The Mercury Quicksilver 8M0045986 Serpentine Belt is a genuine OEM replacement belt designed for select Mercury MerCruiser inboard engines. Built to factory specifications, it drives key engine accessories such as the alternator, seawater pump, and other belt-driven components, ensuring reliable engine operation and charging performance.
Key Specifications
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Part Number: 8M0045986 (also referenced as 57-8M0045986)
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Type: Multi-rib serpentine belt
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Length: 2287 mm
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OEM Brand: Mercury Marine / Quicksilver
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Application: Accessory drive belt for MerCruiser engines
Compatible Engines
Commonly used on 2010 and newer Mercury MerCruiser inboard engines, including:
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MIE 8.2L engines
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8.2 MAG / 8.2 MAG HO EC
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8.2 Horizon / 8.2 HO EC
These engines rely on the serpentine belt to power multiple accessory systems from the crankshaft.
Features
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Genuine Mercury / Quicksilver OEM replacement
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Precision rib design for quiet operation and proper pulley grip
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Engineered to match original factory belt length and tension
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Designed for high-load marine engine environments
Service Tip
Serpentine belts should be inspected regularly for:
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Cracks in the ribs
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Glazing or slipping
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Frayed edges
If wear is present, replacement is recommended to prevent alternator failure, overheating, or accessory loss during operation.
ā ļø Fitment Tip:
Always verify compatibility using your engine model and serial number before ordering. Mercury uses multiple belt lengths across similar engine platforms, and the serial number ensures the correct belt is selected.
Shipping: Ships same or next day for fast Canada wide shipping.
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.