Replace Drive Belt Idler Assembly
Engine
Replacement of the idler assembly—the spring-loaded pulley that keeps the drive belt (serpentine belt) tight against other pulleys. A worn idler causes the belt to slip, which can leave the alternator and air conditioning compressor without power.
Estimated Cost
$150–$450🔒
Parts + labor, based on the parts this service typically requires. Not specific to your vehicle or region — this spans all vehicles, all regions, and all part grades, so treat it as a rough ballpark rather than a quote.