Lexus 90080-91239 V-Ribbed Belt (Cooler Compressor To Crankshaft Pulley), No.1

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Drive belts in engines require regular checks and adjustments to prevent failures. Models from 1999-2007 use a single serpentine belt, while early V6 models use two. From 2008, models use a single belt with automatic tensioners. Inspect belts for damage like cracking, fraying, or glazing, and replace if necessary. Replacement involves removing the right front wheel and inner fender well. For 2.4L and 2.7L engines, release belt tension, mark the belt and pulley, install the new belt, and adjust the tensioner. For 3.0L/3.3L engines, replace both belts if needed. For 3.5L engines, removing the AC compressor may be necessary.

Inspect the belts with the engine off, looking for signs of damage like severed cores, adhesive rubber separation, core detachment, rib separation, cracking, fraying, or glazing.