GMB 425-6280 Engine Timing Belt Idler - Upper

Engine Timing Belt Idler for OE-Style Fitment

The GMB 425-6280 engine timing belt idler is manufactured to meet or exceed OEM specifications for dependable timing system service. Built with a metal pulley and a single groove, it is designed for serpentine and V-belt applications where precise belt tracking matters.

Compatible With Ford Escape, Ford Focus, Mazda Tribute, Ford Escort, Mercury Cougar, Ford Contour, and Mercury Mystique applications that use an upper timing belt idler. The GMB 425-6280 is a direct-fit service part for restoring proper belt routing and tension control in the engine valve train.

Key Features

• Engine timing belt idler for valve train service
• Manufactured to meet or exceed OEM specifications
• Metal pulley construction for durability
• Single-groove pulley design
• Works with serpentine and V-belt configurations
• Upper position fitment for listed vehicles

Fitment Details

• Fits 2001-2004 Ford Escape, Upper
• Fits 2000-2004 Ford Focus, Upper
• Fits 2001-2004 Mazda Tribute, Upper
• Fits 1999-2003 Ford Escort, Upper
• Fits 1999-2002 Mercury Cougar, Upper
• Fits 1999-2000 Ford Contour, Upper
• Fits 1999-2000 Mercury Mystique, Upper

Detailed Description

GMB 425-6280 is an upper engine timing belt idler built for vehicles that require accurate belt guidance in the timing system. The metal pulley construction supports consistent operation, while the single-groove profile helps maintain proper belt alignment in serpentine and V-belt setups. This part cross-references Gates T42036 for the same application.

Use this idler when servicing timing belt components on Ford Escape and Ford Focus models, as well as Mazda Tribute, Ford Escort, Mercury Cougar, Ford Contour, and Mercury Mystique applications listed above. The GMB 425-6280 is intended for repair work where the original idler has worn, become noisy, or no longer tracks the belt correctly.

Common Repair Uses

• Timing belt noise from a worn idler pulley
• Belt misalignment in the upper timing system
• Visible pulley wear or rough rotation
• Service replacement during timing belt maintenance
• Restoring stable belt routing on listed Ford and Mazda vehicles

Installation Notes and Tips

Inspect the timing belt, tensioner, and adjacent pulleys before installation. Replace worn related components at the same time if they show damage or rough operation. Confirm upper-position placement and verify belt routing against the vehicle service information before final assembly.

Quality Assurance

GMB manufactures this timing belt idler to meet or exceed OEM specifications for fit and function. Part number 425-6280 is built for direct replacement use in the listed applications.