Dorman 419-476 Accessory Drive Belt Idler Pulley - Water Pump

Accessory Drive Belt Idler Pulley Replacement

Dorman 419-476 is a replacement accessory drive belt idler pulley built to match the function and performance of the original pulley on select Ford and Lincoln applications. It is a specific-fit component for accessory drive belt system service, with OE-style dimensions and a black finish.

Compatible With 2017-2021 Ford GT water pump applications, 2017-2020 Ford F-150, 2018-2021 Ford Expedition, and 2018-2021 Lincoln Navigator. This part cross-references 50101 and HL3Z8678A for the same application.

Key Features

• Dorman 419-476 accessory drive belt idler pulley for specific-fit service
• OE-grade replacement for restoring accessory drive belt operation
• Black pulley with a flanged design
• V-belt pulley type with 32 grooves
• 69 mm pulley diameter and 70 mm pulley width
• Single mounting hole design with hex bolt head type
• Specific fit for select Ford F-150, Ford Expedition, Ford GT, and Lincoln Navigator applications

Detailed Description

This Dorman accessory drive belt idler pulley is engineered as a direct replacement for the original pulley used on select Ford and Lincoln vehicles. The pulley is built with OE-style dimensions, including a 69 mm outside diameter, 70 mm width, 0.75 in bore size, and flanged construction to support proper belt tracking and accessory drive operation. Dorman 419-476 is a practical choice when servicing the accessory drive belt system on a Ford F-150, Ford Expedition, Ford GT, or Lincoln Navigator.

The part is designed for specific-fit applications rather than universal use, helping maintain the correct belt path and pulley alignment in the engine accessory drive system. Its black finish and original-equipment grade construction make it a straightforward replacement for worn or damaged idler pulley service.

Common Issues This Part Can Address

• Noise from a worn accessory drive belt idler pulley
• Belt tracking problems caused by pulley wear
• Accessory drive belt vibration or irregular movement
• Loss of proper pulley rotation due to bearing wear
• Service needs on the Ford F-150, Ford Expedition, Ford GT, or Lincoln Navigator accessory drive system

Installation Notes and Tips

Verify pulley dimensions, belt routing, and vehicle application before installation. This pulley uses a single mounting hole and hex bolt head type, and mounting hardware is not included. Inspect the accessory drive belt, tensioner, and adjacent pulleys during service so the replacement part can operate under correct belt conditions.

Quality Assurance

Dorman designs replacement components to match original part function and performance on select vehicles. Part number 419-476 is built as an OE-style replacement for specific Ford and Lincoln fitments, including 2017-2021 Ford GT water pump applications and 2017-2020 Ford F-150 service.