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

Accessory Drive Belt Tensioner for GM Main Drive

Dorman 419-014 is an accessory drive belt tensioner assembly built to match the fit and function of the original equipment unit on specified vehicles. It is engineered with quality components for durability and has been extensively tested for reliable operation in the main drive serpentine belt system.

• Accessory drive belt tensioner assembly for serpentine belt applications
• Designed for main drive use on select Buick, Chevrolet, and Pontiac vehicles
• Steel AISI 1008 pulley construction
• Single-pulley design with one pulley bearing
• Counter-clockwise tensioner rotation
• Includes automatic belt tensioner, 3 O-rings, and 2 elbow connectors
• Cross-references Continental 49336 and Gates 38271 for the same application

Fitment Details

Compatible with select GM main drive applications, including Fits 2005-2009 Buick Allure, Main Drive; Fits 2005-2009 Buick LaCrosse, Main Drive; Fits 2006-2008 Buick Lucerne, Main Drive; Fits 1999-2008 Pontiac Grand Prix, Main Drive; Fits 2000-2005 Buick LeSabre, Main Drive; Fits 1999-2005 Buick Park Avenue, Main Drive; Fits 2000-2005 Chevrolet Impala, Main Drive; Fits 2000-2005 Chevrolet Monte Carlo, Main Drive; Fits 2000-2005 Pontiac Bonneville, Main Drive; Fits 1999-2004 Buick Regal, Main Drive; and Fits 1999 Buick Riviera, Main Drive.

This Dorman 419-014 tensioner is a direct-fit replacement for vehicles using a serpentine belt system with counter-clockwise rotation. The pulley measures 76 mm outside diameter, 40 mm pulley bearing diameter, 17 inside diameter, and 31 width, helping restore proper belt tension in the accessory drive system. It is a practical replacement for worn or noisy tensioners on Buick Regal, Chevrolet Impala, and Pontiac Grand Prix applications.

Common Problems This Part Can Address

• Belt squeal caused by weak or inconsistent tension
• Serpentine belt flutter or slippage in the main drive system
• Noise from a worn tensioner pulley bearing
• Loss of proper belt tracking on the accessory drive belt system
• Reduced belt tension from a fatigued automatic tensioner

Installation Notes

Verify belt routing, tensioner rotation, and pulley alignment before installation. Confirm the vehicle uses a counter-clockwise rotating automatic tensioner in the main drive position, and inspect the serpentine belt, idlers, and adjacent accessories for wear before completing the repair. Match the original mounting and connector layout to the vehicle application listed above.

Quality Assurance

Dorman designs this replacement tensioner assembly to match original equipment fit and function, then tests it for dependable performance in service. The part is built with durable components for use in the accessory drive belt system.