Dayco 89346 Accessory Drive Belt Tensioner Assembly

Dayco 89346 Accessory Drive Belt Tensioner Assembly

The Dayco 89346 accessory drive belt tensioner assembly is an automatic serpentine belt tensioner built for consistent belt control in compatible Volkswagen and Audi applications. It features a single 64 mm pulley with 7 grooves and a counter clockwise operating direction for the specified belt routing.

• Automatic accessory drive belt tensioner assembly
• Serpentine belt type
• Counter clockwise rotation
• Single pulley design with 64 mm pulley diameter
• 7-groove pulley, 29 mm pulley width
• Direct-fit application coverage for select Volkswagen and Audi models

Fitment Coverage

• Fits 2018-2023 Volkswagen Atlas, N/A
• Fits 2020-2023 Volkswagen Atlas Cross Sport, N/A
• Fits 2012-2018 Volkswagen Passat, N/A
• Fits 2008 Volkswagen Passat, N/A
• Fits 2006 Volkswagen Passat, N/A
• Fits 1993-1997 Volkswagen Passat, N/A
• Fits 2009-2016 Volkswagen CC, N/A
• Fits 2008-2009 Audi A3 Quattro, N/A
• Fits 2006 Audi A3 Quattro, N/A
• Fits 2008-2009 Audi TT Quattro, N/A
• Fits 2007-2008 Volkswagen Eos, N/A
• Fits 2008 Volkswagen R32, N/A
• Fits 2007 Audi A3 Quattro, N/A, From Chassis/VIN #8P-7-085 001
• Fits 2007 Volkswagen Passat, N/A, To Chassis # 3C7140000
• Fits 1995-2002 Volkswagen Golf, N/A
• Fits 1994-2002 Volkswagen Jetta, N/A
• Fits 1992-1994 Volkswagen Corrado, N/A

Detailed Description

Built for accessory drive systems that use a serpentine belt, the Dayco 89346 tensioner assembly helps maintain proper belt tension and pulley tracking across a wide range of Volkswagen and Audi platforms. The automatic design is specified with a counter clockwise direction, a 64 mm pulley diameter, 7 grooves, and a 29 mm pulley width, making it important to match the belt routing and OE-style configuration before ordering. This part number, 89346, is listed for applications including Volkswagen Passat, Volkswagen CC, Volkswagen Atlas, Volkswagen Atlas Cross Sport, Audi A3 Quattro, and Audi TT Quattro.

This part cross-references Gates 38175 for the same application.

What It Helps Address

• Noise from a worn or unstable serpentine belt tensioner
• Belt slippage caused by weak tension control
• Improper belt tracking on the accessory drive system
• Visible pulley wear affecting belt contact
• Drive belt vibration in compatible Volkswagen and Audi engines

Installation Notes and Quality

Verify pulley groove count, pulley diameter, belt type, and rotation direction before installation. Confirm chassis or VIN notes where listed, including the 2007 Audi A3 Quattro and 2007 Volkswagen Passat applications. For best results, inspect the serpentine belt and related accessory drive components during replacement so the new tensioner assembly can operate within the correct belt path.

Dayco manufactures this tensioner assembly to match the specified OE-style configuration for the listed applications. No warranty information was provided in the product data.