Gates 38271 Accessory Drive Belt Tensioner Assembly - Accessory Drive

OE Belt Tensioner for GM Accessory Drive Systems

The Gates DriveAlign Premium OE Automatic Belt Tensioner, part number 38271, is built for accessory drive belt systems that need consistent belt tension and OE-style fit. It is a steel tensioner assembly with a smooth backside pulley and OE Exact comparison rating for direct replacement service on select Buick, Chevrolet, and Pontiac applications.

Key Features

• Gates DriveAlign Premium OE Automatic Belt Tensioner, part number 38271
• Steel construction for durable accessory drive service
• OE Exact comparison rating for OE-style fit, form, and function
• Single smooth/backside pulley with V-ribbed belt application
• Mounting hole quantity: 8
• Outside diameter: 2.99 in. (76 mm)
• Width: 1.22 in. (31 mm)
• Bearing bore inside diameter: 0.67 in. (17 mm)
• Contents: tensioner assembly and 2 90-degree connectors

Product Details

Gates designs DriveAlign Premium OE Automatic Belt Tensioners to meet rigid tolerances and specifications, drawing on its OE system design background. This tensioner is engineered for accessory drive belt systems using a V-ribbed belt and a smooth backside contact surface, helping maintain proper belt routing and tension on vehicles such as the Buick LeSabre, Buick Regal, Chevrolet Impala, and Pontiac Grand Prix. If you are replacing a worn automatic belt tensioner on a GM accessory drive system, Gates 38271 provides the OE-style dimensions and mounting layout needed for a direct-fit repair. This part cross-references Continental 49336 for the same application.

Common Problems This Part Helps Address

• Belt squeal caused by weak or inconsistent tension
• Accessory drive belt flutter or vibration
• Uneven belt tracking on the smooth backside pulley
• Loss of belt tension from a worn tensioner spring or pivot
• Noise from a failing pulley bearing in the belt drive system

Installation Notes and Tips

• Verify belt routing and pulley alignment before installation.
• Inspect the accessory drive belt, idlers, and adjacent pulleys for wear while the system is apart.
• Confirm the mounting pattern and OE comparison rating match the original tensioner before replacement.
• Use the vehicle application list to confirm fitment for your Buick, Chevrolet, or Pontiac model.

Quality Assurance

Gates manufactures DriveAlign tensioners to OE-quality standards with controlled tolerances for fit, form, and function. Part number 38271 is built as an OE-style replacement for select Buick Allure, Buick LaCrosse, Buick Lucerne, Buick LeSabre, Buick Park Avenue, Buick Regal, Buick Riviera, Chevrolet Impala, Chevrolet Monte Carlo, Pontiac Bonneville, Pontiac Grand Prix, and Pontiac Grand Prix accessory drive applications.

• Fits 2005-2009 Buick Allure, N/A
• Fits 2005-2009 Buick LaCrosse, N/A
• Fits 2006-2008 Buick Lucerne, N/A
• Fits 2008 Pontiac Grand Prix, N/A
• Fits 1999-2007 Pontiac Grand Prix, Accessory Drive
• Fits 2000-2005 Buick LeSabre, N/A
• Fits 1999-2005 Buick Park Avenue, Accessory Drive
• Fits 2004-2005 Chevrolet Impala, Accessory Drive
• Fits 2004-2005 Chevrolet Monte Carlo, Accessory Drive
• Fits 2004-2005 Pontiac Bonneville, N/A
• Fits 2000-2004 Buick Regal, Accessory Drive
• Fits 2000-2003 Chevrolet Impala, N/A
• Fits 2000-2003 Chevrolet Monte Carlo, N/A
• Fits 2000-2003 Pontiac Bonneville, Accessory Drive
• Fits 1999 Buick Riviera, Accessory Drive