Gates 39166 Accessory Drive Belt Tensioner Assembly

Reliable Automatic Belt Tensioner for Mercedes-Benz Sprinter Models

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39166 is engineered to maintain optimal tension on the accessory drive belt system of Mercedes-Benz Sprinter, Sprinter 2500, and Sprinter 3500 vehicles. Designed with precision thermoplastic materials and exact OE specifications, this tensioner assembly ensures consistent belt performance and longevity.

• Constructed from durable thermoplastic for long-lasting operation
• Compatible with V-ribbed accessory drive belts
• Single pulley design with a smooth backside contact surface
• Outside diameter of 65 mm (2.56 in) and width of 26 mm (1.02 in)
• Two mounting holes for secure installation
• OE exact fit and performance for Mercedes-Benz Sprinter series

About the DriveAlign Premium OE Automatic Belt Tensioner Line

The DriveAlign Premium OE Automatic Belt Tensioner line by Gates focuses on delivering original equipment quality and fitment for accessory drive belt systems. This product line is designed to meet or exceed factory specifications, providing reliable tension control and reducing belt slippage or noise. The 39166 tensioner assembly is part of this line, ensuring compatibility and performance tailored specifically for Mercedes-Benz Sprinter vehicles.

Product Details and Specifications

This accessory drive belt tensioner assembly features a thermoplastic construction that balances strength and weight. It includes a single pulley without flanges, measuring 65 mm (2.56 inches) in outside diameter and 26 mm (1.02 inches) in width. The bearing bore inside diameter is 17 mm (0.67 inches), designed to accommodate the tensioner’s rotational components smoothly. The smooth backside contact surface supports the V-ribbed belt type commonly used in Mercedes-Benz Sprinter accessory drive systems. With two mounting holes, the tensioner ensures a secure and stable fit during operation.

Common Applications and Issues Addressed

• Maintains proper tension on V-ribbed accessory drive belts
• Prevents belt slippage and premature wear
• Reduces noise caused by loose or worn tensioners
• Supports efficient operation of alternator, power steering, and AC compressor belts
• Restores factory belt alignment and tension in Mercedes-Benz Sprinter 2500 and 3500 models

Installation Notes and Tips

When installing the Gates DriveAlign Premium OE Automatic Belt Tensioner 39166, ensure the mounting surface is clean and free of debris. Verify the tensioner aligns correctly with the V-ribbed belt path and that the two mounting holes are securely fastened. Use appropriate tools to avoid damaging the thermoplastic housing or pulley. Refer to the vehicle’s service manual for torque specifications and belt routing diagrams specific to Mercedes-Benz Sprinter models.

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39166 is manufactured to meet original equipment standards, providing reliable performance and durability. This part carries an OE comparison rating of exact fit, ensuring compatibility with Mercedes-Benz Sprinter, Sprinter 2500, and Sprinter 3500 vehicles. Warranty coverage details should be confirmed with the product documentation or manufacturer.