Gates 36318 Accessory Drive Belt Idler Pulley - Lower or Smooth Pulley

Gates DriveAlign OE Idler Pulley for Lexus

The Gates DriveAlign Premium OE Pulley 36318 is an accessory drive belt idler pulley built for OE-style fit and smooth belt routing in passenger cars and light trucks. It is a steel, smooth/backside pulley with a 118 mm outside diameter and a 10 mm bearing bore, made for applications that use a non-grooved idler surface.

Key Features

• Steel pulley construction for durable accessory drive service
• Smooth/backside contact surface for serpentine belt routing
• 118 mm outside diameter for the specified OE application
• 10 mm bearing bore inside diameter for proper shaft fit
• Single-pulley design with no grooves and no flange
• DriveAlign Premium OE Pulley line for OE-quality replacement fit

Product Details

Gates 36318 is an accessory drive belt idler pulley designed to match OE fit and function in the belt drive system. The DriveAlign Premium OE Pulley line covers applications that use a locked center tensioning pulley, an automatic belt tensioner pulley, or a standard idler pulley, and this part is built for the smooth/backside belt contact used in those systems. It is listed for Lexus LS460 and Lexus GS460 applications, including 2015-2017 Lexus LS460, Smooth Pulley; 2007-2014 Lexus LS460, Lower; and 2008-2011 Lexus GS460, Lower. This part cross-references Dayco 89580 for the same application.

Common Problems This Part Can Address

• Belt noise caused by a worn idler pulley bearing
• Uneven belt tracking from a damaged pulley surface
• Accessory drive belt vibration at the pulley location
• Loss of proper belt routing in the serpentine drive system
• Wear-related pulley wobble or rough rotation

Installation Notes and Tips

Verify the pulley position and belt path before installation, especially on Lexus LS460 and Lexus GS460 applications. Confirm the 10 mm bearing bore, 118 mm outside diameter, and smooth/backside contact surface match the original part before service. Inspect the belt, tensioner, and adjacent pulleys for wear so the new idler pulley is installed into a clean, serviceable drive system.

Quality Assurance

Gates DriveAlign Premium OE Pulleys are built to OE-quality fit standards for passenger car and light truck accessory drive systems. Gates 36318 is engineered as a direct replacement-style pulley for the listed Lexus applications.