OEM Quicksilver MerCruiser Serpentine Belt Idler Pulley – 865777
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Description
Description
Pulley 865777 is used on specified MerCruiser 4.5L, 6.2L, 8.1L and 8.2L sterndrive and inboard engines with serpentine-belt systems. Mercury’s parts diagrams identify it as a non-grooved idler pulley.
Product details
- Manufacturer part number: 865777
- Non-grooved idler pulley for the specified accessory-belt applications
- Use the engine serial number and belt-drive diagram to verify the pulley position
- Pulley only; not a complete water pump or belt-tensioner assembly
Verify compatibility using the engine serial number and OEM parts diagram before ordering.

