Gates T42002 Engine Timing Belt Idler Pulley

Gates T42002 Timing Belt Idler Pulley

The Gates T42002 timing belt idler pulley is a steel replacement pulley for engine timing systems that use a smooth backside contact surface. It is built for applications where the idler supports belt routing and maintains proper belt tracking in interference-engine setups.

Compatible with 1992-1997 Isuzu Trooper, 1993-1997 Isuzu Rodeo, 1994-1997 Honda Passport, and 1996-1997 Acura SLX, this timing belt pulley is a direct-fit service part for select engine valve train applications.

Key Features

• Steel construction for timing system durability
• Smooth/backside contact surface
• Outside diameter: 70 mm
• Width: 38 mm
• Inside diameter: 10.4 mm
• Non-flanged design
• Contents: pulley only

Timing Belt Pulley Details

Gates PowerGrip idler pulleys are offered as fixed idlers or as replacements for tensioner bracket applications, depending on the engine design. The T42002 uses a smooth backside surface, which is the correct style for timing belts that ride against the pulley’s back side rather than a grooved sprocket profile. This makes it a practical choice for Isuzu Rodeo, Isuzu Trooper, Honda Passport, and Acura SLX timing belt service where accurate belt guidance is critical.

This part cross-references Cloyes 9-5473 for the same application.

Common Problems This Part Can Address

• Timing belt noise from a worn idler pulley bearing
• Belt tracking issues caused by pulley wear
• Rough pulley rotation during timing belt service
• Visible wear on the timing belt contact surface
• Service replacement for interference-engine timing maintenance

Installation Notes and Tips

• Verify engine code and timing belt routing before installation.
• Inspect the timing belt, tensioner, and related pulleys at the same time.
• Confirm the smooth/backside contact surface matches the original pulley style.
• Check pulley alignment and torque specifications during assembly.
• Replace worn timing components together when servicing interference engines.

Quality Assurance

Gates timing components are engineered for engine service applications and built to meet the dimensional requirements of the listed fitments. The T42002 is a steel idler pulley with the specified 70 mm outside diameter, 38 mm width, and 10.4 mm inside diameter for accurate replacement use.