Dorman 419-014 Accessory Drive Belt Tensioner Assembly - Main Drive

Reliable Accessory Drive Belt Tensioner for Buick, Chevrolet, Pontiac

The Dorman 419-014 accessory drive belt tensioner assembly is engineered to maintain optimal serpentine belt tension in select Buick, Chevrolet, and Pontiac models. Designed for durability and precise fit, this tensioner supports smooth engine operation and accessory performance.

• Compatible with Buick Allure, LaCrosse, Lucerne, LeSabre, and Park Avenue
• Fits Chevrolet Impala, Monte Carlo, and Pontiac Bonneville, Grand Prix, Regal, Riviera
• Includes automatic belt tensioner, 3 o-rings, and 2 elbow connectors for complete installation
• Features a steel AISI 1008 pulley with a 40 mm bearing diameter
• Counterclockwise rotation with a single pulley and one pulley bearing
• Serpentine belt type with 17 mm inside diameter, 31 mm width, and 76 mm outside diameter

Technical Specifications and Design Details

The Dorman 419-014 tensioner assembly is built with a steel AISI 1008 pulley, ensuring strength and resistance to wear. The pulley diameter measures 76 mm outside and 17 mm inside, with a width of 31 mm, designed specifically for serpentine belts. It features a single pulley with one bearing, sized at 40 mm in diameter, to provide smooth rotation and consistent belt tension. The tensioner rotates counterclockwise, matching the original equipment specifications for the listed Buick, Chevrolet, and Pontiac vehicles.

Purpose and Common Applications

• Maintains proper tension on the serpentine belt to prevent slippage
• Reduces belt noise and vibration for smoother engine operation
• Prevents premature belt wear and extends accessory component life
• Addresses issues such as belt squealing, misalignment, and tension loss
• Supports reliable function of alternator, power steering, and air conditioning systems

Installation Notes and Tips

Installation of the Dorman 419-014 tensioner assembly requires basic mechanical skills and appropriate tools. Ensure the serpentine belt is properly routed before tensioner installation. Use the included o-rings and elbow connectors to secure the assembly and prevent leaks. Verify the tensioner rotates counterclockwise as specified. After installation, inspect belt alignment and tension to confirm correct operation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 419-014 accessory drive belt tensioner assembly undergoes rigorous quality control to ensure durability and performance. This part is backed by Dorman's limited warranty, providing coverage against defects in material and workmanship under normal use.