Hayden 5997 Accessory Drive Belt Tensioner Pulley

Hayden 5997 Accessory Drive Belt Tensioner Pulley

The Hayden 5997 pulley is a steel idler/tensioner pulley for accessory drive belt systems. It is built with a 3.250-inch outside diameter, 1.25-inch belt width, and a single groove to support proper belt tracking in the timing belt tensioner assembly.

Compatible with Audi A4, Audi A4 Quattro, and Volkswagen Passat applications that use this style of timing belt tensioner pulley, this Hayden pulley is an OE-style replacement for service work on the accessory drive belt system. The Hayden Pulley line focuses on direct-fit pulley components for belt routing and tension control.

Key Features

• Steel construction with a grey finish
• Idler / tensioner pulley design for accessory drive belt systems
• Single-groove pulley with 3.250-inch outside diameter
• 1.25-inch belt width and 30 mm width specification
• 1 mounting hole with 0.32-inch bore diameter
• Meets or exceeds OEM requirements
• Hayden 5997 replacement pulley for service and repair

Detailed Description

Hayden 5997 is an accessory drive belt tensioner pulley made from steel for durability in belt routing applications. It measures 82.550 mm outside diameter, 28.5 mm pulley width, and 7.9375 mm inside diameter, with a single mounting hole and a back idler belt type. This pulley is used in timing belt tensioner service on select Audi A4, Audi A4 Quattro, and Volkswagen Passat models from 2001 through 2006.

This part cross-references Gates T43018 for the same application. The Hayden 5997 is also listed among interchange references for OE-style replacement use in the same vehicle coverage.

What It Helps Address

• Belt noise caused by a worn or rough pulley bearing surface
• Improper belt tracking in the accessory drive belt system
• Timing belt tensioner pulley wear on covered Audi and Volkswagen applications
• Visible pulley damage, scoring, or wobble during inspection
• Service replacement for a pulley that no longer maintains smooth rotation

Installation Notes and Tips

Verify pulley dimensions, groove count, and mounting-hole layout against the removed part before installation. Mounting hardware is not included, so reuse or source the required hardware separately if needed. Inspect the belt, tensioner assembly, and adjacent idler components at the same time to confirm the repair addresses the full wear pattern.

Fits 2001-2006 Audi A4, N/A, timing belt tensioner; pulley. Fits 2001-2005 Audi A4 Quattro, N/A, timing belt tensioner; pulley. Fits 2001-2005 Volkswagen Passat, N/A, timing belt tensioner; pulley.

Quality Assurance

Hayden lists this pulley as meeting or exceeding OEM requirements, making it a direct replacement option for maintenance on the accessory drive belt system. Confirm fitment by year, make, model, and pulley specifications before installation.