Description

Mercury / MerCruiser Quicksilver Serpentine Belt — 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.

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Key Specifications

• Part Number: 8M0045986 (also referenced as 57-8M0045986)

• Type: Multi-rib serpentine belt

• Length:2287 mm

• OEM Brand: Mercury Marine / Quicksilver

• Application: Accessory drive belt for MerCruiser engines

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Compatible Engines

Commonly used on 2010 and newer Mercury MerCruiser inboard engines, including:

• MIE 8.2L engines

• 8.2 MAG / 8.2 MAG HO EC

• 8.2 Horizon / 8.2 HO EC

These engines rely on the serpentine belt to power multiple accessory systems from the crankshaft.

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Features

• Genuine Mercury / Quicksilver OEM replacement

• Precision rib design for quiet operation and proper pulley grip

• Engineered to match original factory belt length and tension

• Designed for high-load marine engine environments

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Service Tip

Serpentine belts should be inspected regularly for:

• Cracks in the ribs

• Glazing or slipping

• Frayed edges

If wear is present, replacement is recommended to prevent alternator failure, overheating, or accessory loss during operation.

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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.