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Volvo / Mack · Engine
20953521
In stock · ships from Knoxville
This idler pulley is a vital part of the serpentine belt or fan drive system on Mack MP7 and Volvo D11 engines.
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Primarily used as a fan drive idler pulley. Direct replacement for OEM numbers 20953521 and 20953529.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 3 of 3.
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It guides and maintains tension on the belt, ensuring proper alignment and preventing slippage that can lead to premature belt wear or accessory failure. A failing pulley often produces squealing or chirping noises, belt wobble, or overheating, and replacement is recommended at the first sign of bearing wear. This is a direct OEM-grade component built to withstand the demands of heavy-duty truck operation.
Part Number: 20953521
IDLER PULLEY
Dealer: Post Onsite
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