Dorman 419-336 Accessory Drive Belt Tensioner Assembly - Main Drive

Reliable Accessory Drive Belt Tensioner for Chevrolet Camaro and Pontiac Firebird

The Dorman 419-336 accessory drive belt tensioner assembly is engineered to maintain optimal tension on the V-belt system of Chevrolet Camaro and Pontiac Firebird models. Designed with durable aluminum construction and precise dimensions, this tensioner ensures consistent belt performance and longevity.

• Constructed from lightweight, corrosion-resistant aluminum
• Compatible with V-belt accessory drive systems
• Includes one plastic pulley with six grooves and a 40 mm bearing diameter
• Features a maximum adjustment range of 40 mm for precise belt tensioning
• Designed for clockwise (CW) rotation with two mounting holes (10.2 mm diameter)

Detailed Product Description and Specifications

The Dorman 419-336 accessory drive belt tensioner assembly is specifically designed for use on Chevrolet Camaro and Pontiac Firebird vehicles equipped with V-belt systems. The tensioner features a robust aluminum body measuring 135 mm in length, with an outside diameter of 73 mm and an inside diameter of 17 mm. The pulley is made from durable plastic and includes six grooves to accommodate the V-belt, supported by a single bearing with a 40 mm diameter to ensure smooth operation. The tensioner’s width varies between 22 mm and 24.5 mm, providing a secure fit within the accessory drive system. With two mounting holes sized at 10.2 mm diameter, installation is straightforward and secure. The tensioner rotates clockwise, aligning with the belt’s natural movement to maintain consistent tension and reduce belt slippage.

Common Applications and Issues Addressed

• Maintains proper tension on the accessory drive V-belt to prevent slipping
• Reduces belt noise caused by improper tension or wear
• Prevents premature belt and pulley wear by ensuring correct alignment
• Addresses belt tensioner failure symptoms such as squealing or belt misalignment
• Supports smooth operation of engine accessories like alternator and power steering pump

Installation Notes and Tips

• Verify compatibility with Chevrolet Camaro and Pontiac Firebird V-belt systems before installation
• Ensure the tensioner rotates clockwise to match the original equipment orientation
• Inspect the belt and pulleys for wear and replace if necessary during installation
• Use proper torque specifications on the two mounting bolts (10.2 mm diameter holes) for secure fitment
• Check belt alignment and tension after installation to confirm proper operation

Quality Assurance and Warranty Information

Dorman manufactures the 419-336 accessory drive belt tensioner assembly to meet or exceed OEM standards for fit, form, and function. The aluminum construction and quality plastic pulley materials provide durability and resistance to corrosion and wear. This part is backed by Dorman’s limited warranty, ensuring reliable performance and customer satisfaction when installed according to manufacturer guidelines.