Dorman 419-403 Accessory Drive Belt Tensioner Assembly

Reliable Accessory Drive Belt Tensioner Assembly for Vehicle Maintenance

The Dorman 419-403 Accessory Drive Belt Tensioner Assembly is engineered to maintain optimal belt tension in your vehicle's accessory drive system. Constructed from durable aluminum with a silver finish, this tensioner assembly is designed for long-lasting performance and corrosion resistance.

• High-quality aluminum construction for strength and durability
• Hexagonal bolt head type for secure installation
• Flanged pulley design to ensure proper belt alignment
• Includes bushing for smooth operation
• Clockwise rotation compatible with specific vehicle applications
• Dimensions: 6.75 inches length, 74 mm width, 72 mm outside diameter

Technical Details and Material Specifications

The Dorman 419-403 tensioner assembly features an aluminum pulley and housing, providing a lightweight yet robust component for your vehicle’s accessory drive belt system. The pulley is flanged to prevent belt slippage and is designed to rotate clockwise, matching the original equipment specifications. The hexagonal bolt head type allows for straightforward installation using standard tools. With an inside diameter of 42 mm and a bearing bore inside diameter of 0.12 inches, this tensioner assembly fits precisely within the accessory drive system. The silver color finish offers corrosion resistance and a clean appearance under the hood.

Common Applications and Problem Resolution

This accessory drive belt tensioner assembly is compatible with various vehicle makes and models requiring a reliable tensioner to maintain belt tension and alignment. It is particularly suited for vehicles experiencing:

• Excessive belt noise due to improper tension
• Premature belt wear or slippage
• Accessory drive system misalignment
• Vibration or pulley wobble during engine operation
• Failure of original tensioner components

Installation Notes and Tips

When installing the Dorman 419-403 tensioner assembly, ensure the belt is properly routed and aligned with the flanged pulley to prevent premature wear. Use a hex socket or wrench to tighten the hexagonal bolt head securely. Verify the tensioner rotates clockwise as specified to match the vehicle’s accessory drive system. It is recommended to inspect the belt and related components during installation to ensure overall system integrity.

Quality Assurance and Warranty Information

Dorman manufactures this accessory drive belt tensioner assembly to meet original equipment standards, ensuring reliable fit and function. The part is constructed from high-grade materials and includes a bushing for enhanced durability. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in material and workmanship.