GMB 460-9020 Engine Timing Belt Idler - Right Upper

GMB 460-9020 Engine Timing Belt Idler

The GMB 460-9020 engine timing belt idler is manufactured to meet or exceed OEM specifications for precise belt support in Subaru timing systems. It is a direct-fit replacement for select Subaru WRX STI, Impreza, Forester, Legacy, Outback, Baja, and Saab 9-2X applications with right upper positioning.

Key Features

• Engine timing belt idler for valve train service
• Metal pulley construction for durability
• 1 mm drive belt pulley diameter specification
• 1-groove pulley design
• Works with serpentine and V-belt pulley/belt types
• Built to meet or exceed OEM specifications
• Part number: 460-9020

Detailed Description

This GMB timing belt idler is engineered for right upper placement in Subaru timing belt systems and related applications. It supports proper belt routing and stable operation in engines that rely on accurate timing component alignment. The metal pulley design and single-groove configuration make it a practical OE-style replacement for maintenance on Subaru WRX STI, Impreza, Forester, Legacy, Outback, and Baja models, as well as Saab 9-2X applications listed in the fitment data. This part cross-references Gates T42194 for the same application.

Use GMB 460-9020 when replacing a worn or noisy timing belt idler on vehicles that require a right upper idler position. It is also referenced by OE number 13073AA082 and part number 4609020.

What It Helps Address

• Timing belt noise from a worn idler bearing
• Belt tracking issues caused by pulley wear
• Improper belt support at the right upper position
• Maintenance replacement during timing belt service
• Restoration of stable belt routing in Subaru timing systems

Installation Notes and Tips

Verify the right upper position and confirm engine application before installation. Inspect the timing belt, tensioner, and adjacent pulleys for wear while the system is open. Follow factory service procedures and torque specifications for the vehicle. Confirm pulley alignment after installation to help maintain proper belt tracking.

Quality Assurance

GMB manufactures this timing belt idler to meet or exceed OEM specifications, supporting consistent fit and function for the listed applications.