Dorman 419-379 Accessory Drive Belt Tensioner Assembly - Alternator or Main Drive

Overview of Dorman Accessory Drive Belt Tensioner Assembly

The Dorman 419-379 accessory drive belt tensioner assembly is designed specifically for Chevrolet Corvette models. Constructed with durable aluminum and featuring a plastic pulley, this tensioner ensures reliable belt tension and smooth operation of your vehicle's accessory drive system.

• Material: Aluminum construction for strength and corrosion resistance
• Length: 135 mm
• Color: Black and silver components
• Inside Diameter: 17 mm
• Width: 22 mm and 24.5 mm
• Outside Diameter: 73 mm
• Mounting Holes: 2 holes with 10.2 mm diameter
• Belt Type: Compatible with V-belt systems
• Pulleys: Single pulley with 6 grooves and one bearing
• Maximum Adjustment Range: 45 mm
• Tensioner Rotation: Counter clockwise (CCW)

Detailed Product Description

The Dorman 419-379 accessory drive belt tensioner assembly is engineered to maintain optimal tension on the V-belt system of Chevrolet Corvette vehicles. Its aluminum body provides a lightweight yet sturdy frame, while the plastic pulley with a 40 mm bearing diameter ensures smooth rotation and reduced wear. The tensioner features two mounting holes for secure installation and a maximum adjustment range of 45 mm to accommodate belt stretch and alignment. Designed for counter clockwise rotation, this tensioner supports proper belt tracking and longevity.

Common Applications and Problem Resolution

• Prevents belt slippage and squealing noises
• Maintains proper belt tension to avoid premature wear
• Reduces risk of accessory drive system failure
• Corrects misalignment issues in the belt path
• Replaces worn or damaged tensioner assemblies on Chevrolet Corvette models

Installation Notes and Tips

When installing the Dorman 419-379 tensioner assembly, ensure the mounting holes align precisely with the vehicle’s bracket. Use appropriate torque specifications to avoid over-tightening. Verify the tensioner rotates counter clockwise as designed and that the V-belt fits securely within the six pulley grooves. It is recommended to inspect the belt for wear and replace it if necessary during installation.

Quality Assurance and Warranty

Dorman manufactures this accessory drive belt tensioner assembly to meet or exceed OEM specifications for Chevrolet Corvette vehicles. The aluminum construction and quality bearing components contribute to long service life. This part is backed by Dorman’s standard warranty, providing coverage against defects in materials and workmanship under normal use.