Gates T42170 Engine Timing Belt Idler Pulley

Timing Belt Idler Pulley for Select GM and Suzuki Applications

The Gates T42170 timing belt idler pulley is a smooth-backside pulley built for select interference-engine applications. It is used in timing belt routing to maintain belt alignment and stable operation in engines such as the Chevrolet Aveo, Aveo5, Pontiac G3, Pontiac Wave, Pontiac Wave5, and Suzuki Swift+.

Key Features

• Plastic idler pulley construction
• Smooth/backside contact surface
• Inside diameter: 10 mm
• Outside diameter: 64 mm
• Width: 29 mm
• Flanged end: No
• Contents: pulley and bolt

Gates PowerGrip Idler Pulley Line

Gates PowerGrip idler pulleys are offered as fixed idlers or as replacements for tensioner bracket applications. The line includes metallic and plastic designs, with smooth and grooved surface styles depending on the engine layout. The T42170 is a plastic, smooth-surface timing belt pulley for backside belt contact.

Detailed Description

The Gates T42170 is an engine timing belt idler pulley for valve train service. Its smooth contact surface is intended for the backside of the timing belt, while the plastic body helps match the original pulley design used in many compact GM and Suzuki applications. This part cross-references Cloyes 9-5495 for the same application. The Gates T42170 is a direct service part for timing belt routing on interference engines where pulley condition is critical to maintaining proper belt tracking.

Vehicle Fitment

• Fits 2017-2018 Chevrolet Aveo, N/A; interference engine application; timing belt pulley.
• Fits 2004-2016 Chevrolet Aveo, N/A; compatible with interference engines; timing belt pulley.
• Fits 2006-2008 Chevrolet Aveo5, N/A; compatible with interference engines; timing belt pulley.
• Fits 2007-2008 Pontiac G3, N/A; compatible with interference engines; timing belt pulley.
• Fits 2005-2008 Pontiac Wave, N/A; compatible with interference engines; timing belt pulley.
• Fits 2004-2008 Suzuki Swift+, N/A; compatible with interference engines; timing belt pulley.
• Fits 2005-2007 Pontiac Wave5, N/A; compatible with interference engines; timing belt pulley.

Common Replacement Reasons

• Timing belt noise from a worn idler pulley bearing
• Belt tracking issues caused by pulley wear or surface damage
• Service replacement during timing belt maintenance
• Restoration of proper belt routing on interference engines
• Replacement for a damaged or seized timing belt pulley

Installation Notes and Quality

Verify pulley dimensions, belt routing, and engine application before installation. Inspect the timing belt system for wear, contamination, and alignment issues during service, and replace related components as needed based on the vehicle’s maintenance procedure. Gates timing components are engineered for engine service applications and built to meet the demands of timing belt operation.