Gates 90K-39221A Serpentine Belt Drive Component Kit - Alternator and Water Pump

Gates 90K-39221A Serpentine Belt Drive Kit

The Gates Accessory Belt Drive Kit 90K-39221A is built to restore the serpentine drive system on Ford Transit vans with the alternator and water pump accessory layout. It combines an OE-equivalent belt with a tensioner to address wear across the front-end accessory drive, not just the belt surface.

Key Features

• Accessory Belt Drive Kit for the serpentine system
• Includes belt and tensioner for a more complete service
• OE-equivalent belt construction
• Belt size: 55.276 in. outside circumference, 1404 mm outside circumference
• Belt top width: 0.807 in. / 20 mm
• Belt part number: K060547
• Tensioner assembly part number: 39221

Product Details

Gates 90K-39221A is a serpentine belt drive component kit for Ford Transit, Transit-150, Transit-250, Transit-350, and Transit-350 HD models with the alternator and water pump position. The Gates Accessory Belt Drive Kit line is intended to service the entire accessory belt drive system so the belt and tensioner are addressed together, helping maintain proper belt tracking and tension in one repair. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Squealing or chirping from a worn serpentine belt
• Loss of belt tension from a fatigued tensioner
• Uneven belt wear caused by aging front-end drive components
• Accessory drive noise on Ford Transit vans
• Repeat repairs when the belt is replaced without the tensioner

Installation Notes and Tips

Fits 2015-2021 Ford Transit, Alternator and Water Pump. Fits 2015-2021 Ford Transit-150, Alternator and Water Pump. Fits 2015-2021 Ford Transit-250, Alternator and Water Pump. Fits 2015-2021 Ford Transit-350, Alternator and Water Pump. Fits 2015-2021 Ford Transit-350 HD, Alternator and Water Pump. Fits 2022-2025 Ford Transit, Alternator and Water Pump. Fits 2022-2025 Ford Transit-150, Alternator and Water Pump. Fits 2022-2025 Ford Transit-250, Alternator and Water Pump. Fits 2022-2025 Ford Transit-350, Alternator and Water Pump. Fits 2022-2025 Ford Transit-350 HD, Alternator and Water Pump.

Verify belt routing and accessory alignment before installation. Inspect pulleys and related front-end drive components for wear, contamination, or damage before completing the repair. Use the included installation instructions and tech tips for accurate setup.

Quality Assurance

Gates manufactures this kit as an OE-style service solution for the accessory belt drive system. The 90K-39221A part number is the catalog reference for this application and should be matched to the vehicle’s accessory drive configuration before ordering.