GMB 480-4720 Engine Timing Belt Tensioner

Engine Timing Belt Tensioner for Audi Applications

This GMB engine timing belt tensioner is built for Audi valve train service where precise belt control matters. Manufactured to meet or exceed OEM specifications, it supports stable belt tension in the timing system for select Audi A4, A4 Quattro, A6, A6 Quattro, Cabriolet, and 90 models.

• GMB Part Number: 480-4720
• Engine timing belt tensioner for valve train service
• Manufactured to meet or exceed OEM specifications
• Pulley / belt type: Serpentine & V-Belt
• Pulley material: metal
• Pulley groove quantity: 1
• Cross-reference: Gates 85578

Detailed Product Overview

GMB 480-4720 is an engine timing belt tensioner engineered for direct replacement use in select Audi timing belt service applications. The metal pulley construction and single-groove design support consistent belt tracking, while the OE-spec manufacturing approach helps maintain the timing system’s intended operation. This part number 480-4720 is listed for 1995-1998 Audi models, including Audi A4, Audi A4 Quattro, Audi A6, Audi A6 Quattro, Audi Cabriolet, and Audi 90.

Compatible With 1996-1998 Audi Cabriolet, 1996-1997 Audi A4, 1996-1997 Audi A4 Quattro, 1996-1997 Audi A6, 1996-1997 Audi A6 Quattro, 1995 Audi 90 from Chassis/VIN 8CS025821, and 1995 Audi A6, A6 Quattro, Cabriolet from Chassis/VIN 4AS026715. This part also cross-references Gates 85578 for the same application.

What This Part Helps Address

• Timing belt tension loss that can affect belt tracking
• Noise from a worn or unstable tensioner pulley
• Uneven belt movement in the timing system
• Service replacement for aging OE tensioner components
• Fitment-specific repair needs on Audi A4, A6, and Cabriolet models

Installation Notes and Tips

Verify engine code and VIN breakpoints before ordering, especially for 1995 Audi 90, A6, A6 Quattro, and Cabriolet applications with chassis-specific fitment notes. Inspect the timing belt system as a whole during service, and confirm pulley alignment and belt routing during installation. Use the vehicle’s service procedure for torque and timing verification.

Quality Assurance

GMB manufactures this tensioner to meet or exceed OEM specifications, supporting OE-style fitment and function for timing belt service on the listed Audi applications.