Gates 90K-38138 Serpentine Belt Drive Component Kit

Accessory Belt Drive Kit for Ford Applications

Gates 90K-38138 is a complete serpentine belt drive component kit for restoring the accessory drive system on select Ford trucks and vans. It combines the belt, tensioner, and idlers into one service package to help address wear across the full drive path, not just the belt alone.

This Accessory Belt Drive Kit line is built for full-system service, with OE-equivalent components and installation guidance for accurate replacement on supported vehicles.

Key Features

• Complete serpentine belt drive service kit for the accessory drive system
• Includes an OE-equivalent belt, tensioner, idler pulley components, and necessary hardware
• Belt part number K061025 with 102.97 in. outside circumference and 20 mm top width
• Includes tensioner assembly 38138 and idler pulleys 36327 and 38001
• Built for direct service on select Ford F-150, E-150, E-250, and Econoline applications
• Gates part number 90K-38138 for catalog and cross-reference lookup

Detailed Description

Gates 90K-38138 is a serpentine belt drive component kit designed to restore the accessory belt drive system as a complete assembly. Replacing the belt, tensioner, and idler pulleys together helps address wear in the full drive path and supports more consistent belt tracking and tension control. This is especially relevant on higher-mileage Ford F-150 and Ford Econoline platform vehicles where front-end accessory components often wear at similar intervals.

Compatible With select 1997-2006 Ford applications, including 2005-2006 Ford F-150, 2002-2003 Ford E-150, 2003 Ford E-150 Club Wagon, 2003 Ford E-250, 2003 Ford Econoline, 1999-2001 Ford Econoline, 1997-2002 Ford E-150 Econoline, 1997-2002 Ford E-150 Econoline Club Wagon, and 1997-2002 Ford E-250 Econoline, all noted with A/C. This part cross-references Monroe Shocks & Struts (e.g., DBK061025D) for the same application.

What It Helps Fix

• Squealing or chirping from a worn serpentine belt
• Loss of belt tension from a weak or noisy tensioner
• Idler pulley noise, roughness, or wobble
• Uneven belt wear caused by aging front-end drive components
• Repeat repairs when only the belt is replaced

Installation Notes and Tips

Use the included installation instructions and tech tips to verify routing and component placement before starting the repair. Inspect the belt path, pulley surfaces, and tensioner operation during service, and confirm the replacement parts match the vehicle’s A/C-equipped application before installation. Gates 90K-38138 is intended for accurate, system-level replacement on the listed Ford fitments.

Quality Assurance

Gates supplies this kit as an OE-equivalent accessory belt drive service solution, with components selected to restore the serpentine drive system on supported vehicles. The kit format is intended to reduce repeat repairs by addressing the belt, tensioner, and idler wear points together.