Gates 39165 Accessory Drive Belt Tensioner Assembly

Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39165 is engineered for precise belt tension control in Mercedes-Benz vehicles. Designed specifically for models like the E250, GLE300d, GLK250, and ML250, this tensioner assembly ensures reliable accessory drive belt performance.

• Thermoplastic construction for durability and heat resistance
• Single pulley design with a smooth backside contact surface
• Compatible with V-ribbed belt systems
• Two mounting holes for secure installation
• Exact OE comparison rating for direct replacement
• Dimensions: 2.56 inch (65 mm) outside diameter, 1.02 inch (26 mm) width
• Bearing bore inside diameter of 0.67 inch (17 mm)

Detailed Product Description

This accessory drive belt tensioner assembly from Gates features a thermoplastic body that withstands the demanding conditions of engine compartments. The single pulley, which is not flanged, has a smooth backside contact surface designed to work seamlessly with V-ribbed belts. With two mounting holes, the tensioner provides a stable and secure fitment. The bearing bore inside diameter measures 0.67 inches (17 mm), supporting smooth rotation and consistent tension. The overall dimensions of 2.56 inches (65 mm) in outside diameter and 1.02 inches (26 mm) in width make it compatible with the accessory drive belt systems of select Mercedes-Benz models.

About the DriveAlign Premium OE Automatic Belt Tensioner Line

The DriveAlign Premium OE Automatic Belt Tensioner line by Gates is developed to meet original equipment specifications, ensuring precise fit and function. This product line focuses on delivering tensioners that maintain optimal belt tension automatically, reducing wear and improving accessory drive system reliability. The 39165 part number is an OE exact replacement, designed to match factory performance standards for Mercedes-Benz vehicles.

Common Applications and Issues Addressed

• Maintains proper tension on V-ribbed accessory drive belts
• Prevents belt slippage and noise in Mercedes-Benz E250, GLE300d, GLK250, and ML250
• Reduces premature belt wear caused by improper tension
• Eliminates vibration and misalignment in the belt drive system
• Supports smooth operation of engine accessories such as alternators and power steering pumps

Installation Notes and Tips

• Ensure compatibility with your specific Mercedes-Benz model before installation
• Inspect the belt and pulley system for wear or damage prior to replacing the tensioner
• Use proper tools to avoid damaging the thermoplastic housing or pulley
• Follow manufacturer torque specifications for mounting bolts
• Verify belt alignment and tension after installation to prevent premature wear

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39165 is manufactured to meet stringent quality standards, providing reliable performance and durability. This part carries an OE comparison rating, confirming it as a direct replacement for factory-installed tensioners. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.