Gates 90K-38123B Serpentine Belt Drive Component Kit

Accessory Belt Drive Kit for Ford V8 Applications

The Gates Accessory Belt Drive Kit 90K-38123B is a complete serpentine belt drive service kit for select 1990-1992 Ford Bronco, F-150, F-250, and F-350 models with factory air conditioning and a visible spring design tensioner setup. It brings together the belt, tensioner, and idler pulley to restore the accessory drive system as a matched service package.

Built around OE-equivalent components, this kit helps address wear across the full serpentine drive instead of replacing only the belt. The Gates 90K-38123B kit is a practical choice for Ford Bronco and Ford F-150 owners looking for a direct-fit accessory belt drive service solution.

Key Features

• Complete serpentine belt drive component kit for accessory drive service
• Includes OE-equivalent belt, tensioner, and idler pulley
• Belt part number K060935 with 93.985 in. outside circumference and 20 mm top width
• Tensioner assembly part number 38123 and idler pulley part number 38015
• Compatible with 1990-1992 Ford Bronco, F-150, F-250, and F-350 applications listed below
• Gates Accessory Belt Drive Kit line for consolidated front-end accessory drive repair

Product Details

Gates 90K-38123B is engineered as a serpentine belt drive component kit for vehicles that use a visible spring design tensioner and factory-installed air conditioning. The kit is organized to service the belt drive system as a unit, helping maintain proper belt routing, tension control, and pulley operation across the front accessory drive. This part cross-references DBK060935B for the same application.

Compatible With 1990-1992 Ford Bronco, N/A; 1990-1992 Ford F-150, N/A; 1990-1992 Ford F-250, N/A; and 1990-1992 Ford F-350, N/A, with notes for K060935, 38123, 38015, visible spring design, and factory A.C. This Gates 90K-38123B kit is a fitment-specific solution for Ford Bronco and Ford F-150 accessory belt drive service.

Common Issues This Kit Can Address

• Squealing or chirping from a worn serpentine belt
• Loss of belt tension from a fatigued tensioner assembly
• Pulley noise caused by worn idler pulley bearings
• Uneven belt wear from aging front-end accessory drive components
• Repeat repairs when only the belt is replaced instead of the full drive system

Installation Notes and Tips

Verify the vehicle uses the listed visible spring design and factory A.C. configuration before ordering. Match the belt part number K060935 and confirm the tensioner and idler pulley references against the existing accessory drive layout. Follow the included installation instructions and tech tips for accurate routing and component alignment during service.

Quality Assurance

Gates positions this Accessory Belt Drive Kit as a complete service package for restoring the serpentine drive system with OE-equivalent components. The brand’s kit format is intended to support a full front-end accessory drive refresh using matched belt, tensioner, and pulley components.