Idler Pulley
The idler pulley serves as a guide and support for the serpentine belt, ensuring it runs smoothly over the entire system.
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MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
05-03-2026
Product Details
An engine idler pulley is a crucial component in a vehicle’s serpentine belt system, helping to maintain proper tension and alignment of the belt as it drives essential engine accessories.
Signs of a Failing Idler Pulley:
- Squeaking or squealing noises from the engine bay
- Visible wear or cracks on the pulley
- Serpentine belt misalignment or premature wear
- Engine accessories losing power due to belt slippage
A worn or failing idler pulley can lead to belt failure, which may cause loss of power steering, alternator function, or even engine overheating if the water pump is affected. Regular inspection and timely replacement of the idler pulley help ensure smooth engine operation and prevent costly repairs.
Prop 65 Warning
- 11287578675
- URO-015810
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