Gates 39299 Accessory Drive Belt Tensioner Assembly - Air Conditioning

OE Belt Tensioner for Ford F-150 and Mark LT

The Gates DriveAlign Premium OE Automatic Belt Tensioner, part number 39299, is built for accessory drive belt systems that use a V-ribbed belt and a smooth/backside pulley contact surface. It is a direct-fit tensioner assembly for select Ford F-150 and Lincoln Mark LT air conditioning applications, with OE performance expectations for fit, form, and function.

Gates DriveAlign Premium OE Automatic Belt Tensioners are engineered from original equipment system design knowledge and manufactured to rigid tolerances. That focus helps deliver consistent belt tension control for the accessory drive belt system on the 2011-2014 Ford F-150 and 2011-2013 Lincoln Mark LT applications listed below.

Key Features

• Part number 39299 automatic belt tensioner assembly
• OE Performance rating for direct replacement use
• Thermoplastic construction
• V-ribbed belt application with smooth/backside contact surface
• Single-pulley design with non-flanged pulley
• Mounting hole quantity: 1
• Includes tensioner assembly and bolt
• Outside diameter: 2.76 in. (70 mm)
• Width: 1 in. (25.5 mm)
• Bearing bore inside diameter: 0.67 in. (17 mm)

Detailed Description

This Gates DriveAlign Premium OE Automatic Belt Tensioner is engineered for accessory drive belt system service where stable belt tension is critical to air conditioning operation. It is listed for 2014 Ford F-150 air conditioning, 2012-2013 Ford F-150 air conditioning, 2011 Ford F-150 air conditioning with Feb. 16, 2011 and newer build dates, 2013 Lincoln Mark LT air conditioning, and 2011-2012 Lincoln Mark LT air conditioning. If you are searching for a Ford F-150 belt tensioner replacement or a Lincoln Mark LT accessory drive belt tensioner, part number 39299 matches the confirmed applications shown here.

The DriveAlign Premium OE Automatic Belt Tensioner line is Gates’ OE-focused tensioner program, built to the same fit and performance expectations used in original equipment system design. This part cross-references Continental 49822 for the same application.

Common Problems This Part Can Address

• Belt squeal from weak or inconsistent tension
• Accessory drive belt flutter or vibration
• Poor belt tracking on the smooth backside pulley path
• Air conditioning drive belt tension loss
• Wear-related tensioner noise or pulley instability

Installation Notes and Tips

Verify the vehicle build date and belt configuration before ordering, especially on 2011 Ford F-150 applications. Confirm the accessory drive belt system uses a V-ribbed belt and compare the original tensioner layout to the OE-style replacement before installation. Inspect the belt, pulley surfaces, and mounting point for wear or damage during service, and replace any worn belt components as needed to restore proper system operation.

Quality Assurance

Gates manufactures this tensioner to rigid tolerances and specifications to support OE fit, form, and function. The part is designed as an OE-performance replacement for confirmed Ford F-150 and Lincoln Mark LT applications.