GMB 445-2020 Engine Timing Idler

Engine Timing Idler for OE-Style Belt Routing

This GMB engine timing idler is built for applications that use serpentine and V-belt routing, with a metal pulley and a single groove for stable belt tracking. Manufactured to meet or exceed OEM specifications, it is a direct-fit service part for select Ford, Mazda, and Kia vehicles.

• GMB Part Number: 445-2020
• Metal pulley construction for durability in engine bay conditions
• Single-groove pulley design
• Works with serpentine and V-belt applications
• OE-style replacement built to meet or exceed OEM specifications
• Cross-reference: Gates T42003

Fitment Coverage

• Fits 1995 Kia Sportage, N/A
• Fits 1987-1993 Mazda B2200, N/A
• Fits 1989-1992 Ford Probe, N/A
• Fits 1988-1992 Mazda 626, N/A
• Fits 1988-1992 Mazda MX-6, N/A

Detailed Description

GMB 445-2020 is an engine timing idler designed for select Mazda, Ford, and Kia applications that require a metal pulley with one groove and belt compatibility for serpentine and V-belt systems. This part number 445-2020 is a practical OE-style replacement for vehicles such as the Mazda 626, Mazda MX-6, Mazda B2200, Ford Probe, and Kia Sportage when the original idler needs service. The part is manufactured to meet or exceed OEM specifications, supporting proper belt alignment and consistent pulley operation in the timing and accessory drive system.

Common Repair Uses

• Replacing a worn or noisy timing idler pulley
• Restoring proper belt tracking on serpentine or V-belt setups
• Addressing belt squeal caused by pulley wear
• Correcting uneven belt movement from a damaged pulley surface
• Servicing OE-style timing drive components on Mazda and Ford platforms

Installation Notes and Tips

Verify belt routing, pulley alignment, and application match before installation. Inspect the surrounding belt path, tensioner condition, and related drive components for wear so the new idler can operate correctly. Confirm the vehicle application by year and model, especially on 1987-1993 Mazda B2200, 1988-1992 Mazda 626, 1988-1992 Mazda MX-6, 1989-1992 Ford Probe, and 1995 Kia Sportage.

Quality Assurance

GMB manufactures this timing idler to meet or exceed OEM specifications, giving buyers a replacement part built around factory-level fit and function expectations. Part number 445-2020 is also cross-referenced to Four Seasons 85215 for the same application.