Gates 39207 Accessory Drive Belt Tensioner Assembly

OE Automatic Belt Tensioner for Mercedes-Benz

The Gates DriveAlign Premium OE Automatic Belt Tensioner, part number 39207, is built for accessory drive belt systems that require consistent belt tension and OE-style fit. It is a direct replacement for select Mercedes-Benz C250, SLK250, and C180 applications, including 2012-2015 Mercedes-Benz C250 and 2012-2015 Mercedes-Benz SLK250.

Gates applies OE system design experience to this DriveAlign Premium OE Automatic Belt Tensioner line, with manufacturing held to rigid tolerances for fit, form, and function. The result is a thermoplastic tensioner assembly with a smooth/backside pulley surface and OE Exact comparison rating for applications that call for precise belt control.

Key Features

• Part number 39207
• Accessory drive belt tensioner assembly for V-ribbed belt systems
• OE Exact comparison rating for OE-style replacement
• Thermoplastic construction
• Single pulley design with smooth/backside contact surface
• 17 mm bearing bore inside diameter
• 76 mm outside diameter and 28 mm width
• Single mounting hole design

Product Details

This Gates DriveAlign Premium OE Automatic Belt Tensioner is engineered for accessory drive belt system service where stable belt tracking and proper tension are critical. It is listed for 2012-2015 Mercedes-Benz C250, 2012-2015 Mercedes-Benz SLK250, and 2013 Mercedes-Benz C180, making it a focused OE-style replacement for these vehicle platforms. If you are searching for a Mercedes-Benz C250 belt tensioner, Mercedes-Benz SLK250 accessory drive belt tensioner, or Gates 39207 replacement, this part matches the specified application data.

This part cross-references Four Seasons 39207 for the same application.

Common Issues It May Address

• Belt noise caused by inconsistent tension
• Accessory belt flutter or vibration
• Visible wear on the belt tensioner pulley
• Loss of proper belt tracking in the accessory drive system
• Service replacement for a worn OE-style tensioner assembly

Installation Notes and Tips

Verify belt routing and application match before installation. Inspect the accessory drive belt, pulleys, and related components for wear at the same time, since a new tensioner works best with a belt system in good condition. Confirm the mounting point and pulley alignment against the vehicle’s original configuration for the listed Mercedes-Benz C250, SLK250, and C180 applications.

Quality Assurance

Gates manufactures DriveAlign Premium OE Automatic Belt Tensioners to OE-quality standards with rigid dimensional control for fit, form, and function. Part number 39207 is built for the specified Mercedes-Benz applications and reflects Gates’ OE system design background.