Gates 39338 Accessory Drive Belt Tensioner Assembly

Reliable Automatic Belt Tensioner for Mercedes-Benz Vehicles

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 39338) is engineered to maintain optimal tension on the accessory drive belt system. Designed specifically for select Mercedes-Benz models, this tensioner assembly ensures consistent belt performance and longevity.

• Constructed from durable thermoplastic material for strength and heat resistance
• Single pulley design with a smooth backside contact surface
• Compatible with V-ribbed belt types commonly used in Mercedes-Benz vehicles
• Precise dimensions: 2.56 inch (65 mm) outside diameter and 1.02 inch (26 mm) width
• One mounting hole for secure installation
• OE exact fit and performance for reliable replacement

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. This product line is designed to meet or exceed factory specifications, providing a direct replacement for worn or damaged tensioners. The 39338 tensioner assembly is part of this line, ensuring compatibility and durability for Mercedes-Benz accessory drive belt systems.

Detailed Product Description and Specifications

This accessory drive belt tensioner assembly features a thermoplastic construction that offers resistance to heat and wear, essential for maintaining belt tension under varying engine conditions. The pulley has a smooth backside contact surface and is not flanged, designed specifically for V-ribbed belts. The bearing bore inside diameter measures 0.67 inches (17 mm), supporting smooth rotation and reducing wear on the belt. With an outside diameter of 2.56 inches (65 mm) and a width of 1.02 inches (26 mm), this tensioner fits precisely within the accessory drive system of compatible Mercedes-Benz models.

Compatible Mercedes-Benz Models and Applications

• Mercedes-Benz C300 and C350e
• Mercedes-Benz E300
• Mercedes-Benz GLC300
• Mercedes-Benz Metris
• Mercedes-Benz SLC300 and SLK300
• Mercedes-Benz Sprinter 1500 and Sprinter 2500

Common Issues Addressed by This Belt Tensioner

• Eliminates belt slippage caused by improper tension
• Prevents premature belt wear and cracking
• Reduces noise from loose or worn tensioners
• Maintains consistent accessory drive performance
• Helps avoid engine overheating due to accessory belt failure

Installation Notes and Tips

Ensure the vehicle is off and cooled before beginning installation. This tensioner requires a single mounting point and is designed for V-ribbed belt systems. Verify belt alignment and tension after installation to prevent premature wear. Use appropriate tools to avoid damage to the thermoplastic housing or pulley during installation.

Quality Assurance and Warranty Information

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39338 is manufactured to meet original equipment standards, providing reliable performance and durability. This part carries an OE comparison rating, confirming it as an exact replacement for factory-installed tensioners. Warranty coverage details should be confirmed with the product supplier or manufacturer.