Dayco 89323 Accessory Drive Belt Tensioner Assembly - Main Drive

Dayco 89323 Accessory Drive Belt Tensioner Assembly

Dayco 89323 is an automatic serpentine accessory drive belt tensioner assembly for the main drive system. It is built for vehicles that use a counter clockwise tensioner direction and a single 6-groove pulley, helping maintain proper belt tension in demanding engine accessory drive layouts.

Key Features

• Automatic accessory drive belt tensioner assembly
• Serpentine belt application
• Counter clockwise rotation
• Single pulley design with 76 mm diameter
• 6-groove pulley, 28.7 mm width
• Direct-fit style for main drive applications

Detailed Description

This Dayco 89323 tensioner assembly is designed for the accessory drive belt system and is listed for main drive use on select Chevrolet and GMC trucks and SUVs. It matches the specified serpentine belt configuration and pulley dimensions, making it a practical replacement when servicing the belt tensioner on a 2001-2006 Chevrolet Silverado 2500 HD, 2001-2006 GMC Sierra 3500, or related applications such as the 2002-2006 Chevrolet Avalanche 2500 and 2001-2006 GMC Yukon XL 2500. This part cross-references Gates 38260 for the same application.

Vehicle Fitment

• Fits 2007 Chevrolet Silverado 2500 HD Classic, Main Drive
• Fits 2007 Chevrolet Silverado 3500 Classic, Main Drive
• Fits 2007 GMC Sierra 2500 HD Classic, Main Drive
• Fits 2007 GMC Sierra 3500 Classic, Main Drive
• Fits 2002-2006 Chevrolet Avalanche 2500, Main Drive
• Fits 2001-2006 Chevrolet Silverado 2500 HD, Main Drive
• Fits 2001-2006 Chevrolet Silverado 3500, Main Drive
• Fits 2001-2006 Chevrolet Suburban 2500, Main Drive
• Fits 2001-2006 GMC Sierra 2500 HD, Main Drive
• Fits 2001-2006 GMC Sierra 3500, Main Drive
• Fits 2001-2006 GMC Yukon XL 2500, Main Drive

Common Problems This Part Can Address

• Belt squeal caused by weak or inconsistent tension
• Serpentine belt flutter or slippage
• Visible pulley wear or rough pulley operation
• Accessory drive noise from a worn tensioner assembly
• Loss of proper belt tracking in the main drive system

Installation Notes and Tips

Verify pulley diameter, groove count, belt type, and rotation direction before installation. Confirm the vehicle application against the main drive fitment listing for your Chevrolet Silverado, Chevrolet Avalanche, GMC Sierra, or GMC Yukon XL. Inspect the serpentine belt and related pulleys during service so the new tensioner can operate against a clean, properly aligned belt path.

Quality Assurance

Dayco is a recognized name in accessory drive components, and this tensioner assembly is specified with the pulley and rotation details needed for accurate replacement selection. Use the listed fitment and interchange references to confirm the correct part before installation.