Keep every accessory spinning with the Gates DriveAlign Belt Drive Idler/Tensioner Pulley (MPN 36299), a smooth pulley that guides and holds tension on the serpentine belt driving the fan, alternator and air conditioning. It's a direct-fit replacement for many vehicles, among them the 1999-2013 Chevrolet Silverado 1500 4.3L / 4.8L / 5.3L / 6.0L / 6.2L and 2003-2014 Cadillac Escalade 5.3L / 6.0L / 6.2L — see the "Vehicles it fits" section for the full list.
As part of the Gates belt drive system, this DriveAlign pulley can serve as a locked center tensioning pulley, an automatic belt tensioner pulley or an idler pulley, depending on the application.
- Steel and thermoplastic construction: built to tight manufacturing tolerances for high durability and quality performance.
- Under-hood resistance: designed to resist dirt, salt, chemicals and other under-hood contaminants.
- Premium bearings: meet or exceed OE standards for application-specific speed and load, and are designed to eliminate bearing noise.
- Mounting hardware: included for some popular applications.
A worn accessory-drive pulley often shows up as bearing whine, a chirping or squealing belt, or a visible wobble; if a failed idler/tensioner pulley is the cause, this Gates unit replaces it. Country of origin: Canada.
Interchange: 8010 · 8016 · 231604 · 12555609 · 12580771 · 12669569 · 49154 · 900401A · 900401
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
36299, 8010, 8016, 231604, 12555609, 12580771, 12669569, 49154, 900401A, 900401
Frequently Asked Questions
What does the Gates 36299 pulley do?
It's a smooth idler/tensioner pulley that guides and maintains tension on the serpentine belt, keeping the fan, alternator and air conditioning spinning. It can act as a locked center tensioning, automatic tensioner or idler pulley.
What vehicles does it fit?
It fits many GM trucks, vans and SUVs, including the 1999-2013 Chevrolet Silverado 1500 4.3L / 4.8L / 5.3L / 6.0L / 6.2L and 2003-2014 Cadillac Escalade 5.3L / 6.0L / 6.2L. See the "Vehicles it fits" section for the full list.
Does it come with mounting hardware?
Mounting hardware is included for some popular applications. Confirm what your specific vehicle requires before installing.
What is the pulley made of?
It uses steel and thermoplastic construction built to tight manufacturing tolerances, with premium bearings that meet or exceed OE standards and are designed to eliminate bearing noise.
How do I know the pulley is failing?
Common signs include bearing whine or growl, a chirping or squealing belt, or a visible wobble. Diagnose the cause first; if a failed idler/tensioner pulley is to blame, this replaces it.
