Keep your timing belt tracking cleanly and quietly with the GMB Engine Timing Belt Idler 450-8930. As an idler pulley in the timing drive, it guides the belt along its intended path and rides on a bearing so the belt can run smoothly against the surrounding gears and tensioner. When a worn idler is behind belt noise or a wandering belt, this unit replaces it.
Confirm this idler's fit for your vehicle on the Buyer's Guide tab before ordering.
Interchange: 85283 · T42021 · 1307745V00. Manufacturer part number 450-8930 (also 4508930).
This part cross-references / interchanges with the following part numbers:
What does the GMB 450-8930 timing belt idler do?
It acts as an idler pulley in the timing belt drive, guiding and supporting the belt along its intended path while rotating on its bearing so the belt runs smoothly.
What other part numbers does this idler cross-reference?
It interchanges with 85283, T42021, and 1307745V00. Its own manufacturer part number is GMB 450-8930.
What are the signs a timing belt idler may need replacing?
Common signs include bearing noise (whining, grinding, or rattling) from the timing cover area and a belt that appears to wander or run rough. Diagnose the cause before replacing.
Should I replace anything else at the same time?
It's good practice to replace the timing belt, tensioner, and related idlers together during a scheduled belt service so the whole drive is renewed at once.
Which vehicles does this idler fit?
Please check the Buyer's Guide tab to confirm this idler fits your specific vehicle before ordering.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
