Gates 90K-38133 Serpentine Belt Drive Component Kit

Gates FleetRunner Serpentine Kit for Ford

The Gates Accessory Belt Drive Kit 90K-38133 brings together the key components needed for proper serpentine system service in one package. Built for heavy-duty maintenance needs, it is a practical choice for Ford F-150, F-250, F-350, E-Series, Expedition, and Excursion applications with air conditioning.

Gates FleetRunner Heavy Duty Serpentine Kits are organized to simplify accessory drive service and help address wear patterns seen in demanding fleet use. The kit format supports a complete service approach for the belt drive system on the listed Ford applications.

Key Features

• Accessory Belt Drive Kit for serpentine system service
• Gates FleetRunner heavy-duty product line
• Includes belt, tensioner, and idler pulley
• Belt part number: K080991HD
• Tensioner assembly part number: 38133
• Idler pulley part number: 38022
• Belt outside circumference: 99.65 in. / 2531 mm
• Belt top width: 1.087 in. / 28 mm
• Direct fit for select Ford truck and van applications

Product Details

Part number 90K-38133 is a Gates serpentine belt drive component kit built around the FleetRunner Heavy Duty line. It is intended for service on select Ford models, including 1997-2001 Ford F-150, 1997-2001 Ford F-250, 1997-2001 Ford E-150 Econoline, 1997-2001 Ford E-150 Econoline Club Wagon, 1997-2001 Ford E-250 Econoline, 1997-2001 Ford E-350 Econoline Club Wagon, 1999-2001 Ford E-350 Super Duty, 1999-2001 Ford Econoline, 2000-2001 Ford Excursion, and 1997 Ford Expedition, all with air conditioning where noted in the fitment data. Additional coverage includes 1999-2000 Ford E-350 Econoline, 1997-1998 Ford E-350 Econoline, 2000 Ford F-350, 1999 and 2001 Ford F-350, and 2004 Ford F-150, F-150 Heritage, and F-350 applications listed in the fitment table.

This part cross-references Litens LV999266B for the same application.

Common Service Issues Addressed

• Worn or noisy serpentine belt components
• Belt tracking concerns caused by aging tensioner or idler parts
• Accessory drive service on high-mileage Ford trucks and vans
• Loss of belt tension from a fatigued tensioner assembly
• Routine maintenance on the accessory drive belt system

Installation Notes and Tips

Verify engine configuration and air conditioning equipment against the fitment data before installation. Confirm belt routing, pulley alignment, and tensioner operation during service, and inspect the accessory drive path for wear or contamination before installing the new components. For body-style and year-specific Ford applications, match the vehicle exactly to the listed fitment rows for 90K-38133.

Quality Assurance

Gates FleetRunner Heavy Duty kits are built to support proper serpentine system service using a matched belt, tensioner, and idler layout. The product line is positioned for demanding maintenance histories and service consistency across fleet-oriented Ford applications.