Dorman 419-324 Accessory Drive Belt Tensioner Assembly

Reliable Accessory Drive Belt Tensioner for Ford, Lincoln, Mercury

The Dorman 419-324 accessory drive belt tensioner assembly is engineered to maintain optimal serpentine belt tension for select Ford, Lincoln, and Mercury vehicles. Designed with durable aluminum and steel materials, this tensioner ensures consistent performance and longevity in your vehicle's accessory drive system.

• Constructed with aluminum housing and steel pulley for strength and durability
• Compatible with serpentine belt systems requiring a maximum belt width of 25 mm
• Features a single pulley with a 61.5 mm bearing diameter for smooth operation
• Includes three mounting holes with diameters ranging from 6.2 mm to 7.7 mm for secure installation
• Designed for clockwise (CW) tensioner rotation to match factory specifications

Durable Materials and Precise Dimensions

This accessory drive belt tensioner assembly combines an aluminum housing with a steel pulley to provide a robust and corrosion-resistant component. The tensioner measures 150 mm in length with an outside pulley diameter of 70 mm, accommodating serpentine belts up to 25 mm wide. Its design includes a maximum adjustment range of 90 degrees, allowing for precise belt tensioning. The pulley features a single bearing to reduce friction and wear, contributing to smoother belt operation and extended service life.

Compatible Vehicles and Applications

The Dorman 419-324 tensioner is compatible with a range of Ford, Lincoln, and Mercury models, including the Ford Edge, Explorer, Fusion, Taurus, and Taurus X, as well as Lincoln Continental, MKS, MKT, MKX, MKZ, and Mercury Sable. This part is specifically designed for vehicles equipped with serpentine belt systems requiring a tensioner with these exact specifications.

• Maintains proper serpentine belt tension to prevent slippage and noise
• Helps avoid premature belt wear and potential accessory drive failure
• Addresses issues related to belt misalignment and vibration
• Reduces risk of engine overheating caused by accessory belt malfunction
• Supports consistent operation of alternator, power steering, and A/C compressor

Installation Notes and Tips

When installing the Dorman 419-324 accessory drive belt tensioner, ensure the mounting holes align correctly with the vehicle’s bracket using the specified hole diameters (6.2 mm to 7.7 mm). The tensioner rotates clockwise, so verify belt routing matches this orientation. It is recommended to inspect the serpentine belt for wear and replace it if necessary during installation. Proper torque specifications should be followed to secure the tensioner without causing damage.

Quality Assurance and Warranty

Dorman manufactures this accessory drive belt tensioner assembly to meet or exceed OEM standards, using high-quality aluminum and steel materials for durability and reliable performance. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Refer to the product packaging or Dorman’s official documentation for exact warranty terms.