Dorman 419-105 Accessory Drive Belt Tensioner Assembly - Main Drive

Dorman 419-105 Accessory Drive Belt Tensioner Assembly

Dorman 419-105 is a replacement accessory drive belt tensioner assembly for serpentine belt systems on select GM vehicles. It is built to match the original equipment fit and function, with components selected for durability and tested for reliable operation.

Key Features

• Replacement accessory drive belt tensioner assembly for serpentine belt applications
• Matches OE fit and function for specified vehicles
• Steel pulley construction with a 40 mm pulley bearing diameter
• Counter-clockwise tensioner rotation
• Includes a belt tensioner, O-rings, and an elbow connector
• Cross-references Continental 49239 and Dayco 89288 for the same application

Product Details

This Dorman belt tensioner assembly is engineered for the main drive system on vehicles such as the Buick LeSabre, Buick Park Avenue, Buick Regal, Buick Riviera, Chevrolet Lumina, Chevrolet Monte Carlo, Oldsmobile 88, Oldsmobile Intrigue, Oldsmobile LSS, Oldsmobile Regency, Pontiac Bonneville, Pontiac Grand Prix, Chevrolet Camaro, Pontiac Firebird, and Oldsmobile 98. The assembly is designed around a serpentine belt layout and uses a single steel pulley with counter-clockwise rotation to match the specified OE configuration. Dorman 419-105 is a practical choice when replacing a worn or noisy tensioner on compatible GM applications.

What It Helps Fix

• Belt squeal caused by weak or inconsistent tension
• Serpentine belt flutter or vibration
• Accessory drive belt tracking issues
• Noise from a worn pulley bearing
• Loss of proper belt tension in the main drive system

Installation Notes

Verify belt routing, pulley alignment, and tensioner rotation before installation. Confirm the vehicle application by year, make, model, and main drive position before ordering. This part is listed for 1995-1998 Buick Park Avenue, 1996-1998 Buick LeSabre, 1996-1998 Buick Regal, 1995-1998 Buick Riviera, 1998 Chevrolet Lumina, 1998 Chevrolet Monte Carlo, 1995-1998 Oldsmobile 88, 1998 Oldsmobile Intrigue, 1996-1998 Oldsmobile LSS, 1997-1998 Oldsmobile Regency, 1995-1998 Pontiac Bonneville, 1997-1998 Pontiac Grand Prix, 1995-1997 Chevrolet Camaro, 1995-1997 Pontiac Firebird, and 1995-1996 Oldsmobile 98, all in the main drive position.

Quality Assurance

Dorman designs this replacement tensioner assembly to match OE fit and function and subjects it to extensive testing for dependable performance. The part number is 419-105.