Gates 90K-38137A Serpentine Belt Drive Component Kit

Accessory Belt Drive Kit for Ford Ranger and Explorer

Restore the front accessory drive with this Gates Accessory Belt Drive Kit. Gates 90K-38137A combines the belt, tensioner, and idler pulley into one service solution for vehicles that need a complete serpentine drive refresh.

Built around OE-equivalent components, this kit is aimed at Ford Ranger, Ford Explorer, Mazda B4000, Explorer Sport Trac, Explorer Sport, and Mercury Mountaineer applications where belt wear, tension loss, or pulley noise can affect accessory drive performance.

Key Features

• Gates Accessory Belt Drive Kit for the serpentine accessory drive system
• Includes an OE-equivalent belt, tensioner, and idler pulley
• Belt outside circumference: 87.25 in. / 2216 mm
• Belt top width: 0.807 in. / 20 mm
• Belt part number: K060866
• Tensioner assembly part number: 38137
• Idler pulley part number: 38001
• Part number: 90K-38137A

Product Details

Gates 90K-38137A is a complete serpentine belt drive component kit for servicing the accessory belt system as a unit. Replacing the belt, tensioner, and idler pulley together helps address wear across the full drive path instead of isolating one component. That approach is especially relevant on Ford Ranger and Ford Explorer applications where accessory drive noise, belt tracking issues, or tension loss can develop over time.

This kit cross-references Continental K49250A and Dayco 5060865K2 for the same application. The Gates Accessory Belt Drive Kit line is built for accurate service coverage and includes installation instructions and tech tips to support a correct repair.

Common Problems This Kit Can Help Resolve

• Squealing or chirping from the serpentine belt area
• Visible belt wear, glazing, or cracking
• Weak or inconsistent belt tension
• Idler pulley noise or rough operation
• Accessory drive vibration on Ford Ranger, Ford Explorer, and Mazda B4000 applications

Installation Notes and Tips

Verify the belt routing and confirm the vehicle uses the listed accessory belt drive configuration before installation. Fitment includes 2000-2011 Ford Ranger, 2000-2005 Ford Explorer, 2001-2005 Ford Explorer Sport Trac, 2001-2003 Ford Explorer Sport, 2000-2001 Mercury Mountaineer, and 2001-2010 Mazda B4000 applications listed in the fitment data. Some Ford Explorer applications note W/A.C. or a round locator pin requirement, so match the vehicle notes carefully before service.

For best results, inspect the front accessory drive for pulley alignment, belt tracking, and mounting condition before installing Gates 90K-38137A. Use the included tech tips and installation instructions to complete the repair accurately.

Quality Assurance

Gates supplies this kit as a complete service package for the accessory belt drive system, using OE-equivalent components and application-specific fitment data to support a proper repair on the listed Ford, Mazda, and Mercury vehicles.