Gates 39190 Accessory Drive Belt Tensioner Assembly - Water Pump and Alternator

Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 39190) is engineered for precise belt tension control in Smart Fortwo vehicles. Designed with thermoplastic material and a smooth backside contact surface, this tensioner assembly ensures reliable performance for V-ribbed accessory drive belt systems.

• Thermoplastic construction for durability and lightweight design
• Single pulley with a 2.36 inch (60 mm) outside diameter
• Compatible with V-ribbed belt types
• One mounting hole for secure installation
• Exact OE comparison rating for direct replacement
• Bearing bore inside diameter of 0.67 inch (17 mm)
• Width of 0.75 inch (19 mm) for proper fitment

Detailed Product Description

This accessory drive belt tensioner assembly is specifically designed for the Smart Fortwo model, providing consistent tension to the V-ribbed belt system. The thermoplastic material offers resistance to wear and heat, contributing to the longevity of the tensioner. The single pulley design, without flanges, features a smooth backside contact surface that minimizes belt wear and noise. With a precise bearing bore inside diameter of 0.67 inch (17 mm) and a width of 0.75 inch (19 mm), this tensioner matches original equipment specifications for seamless integration.

The Gates DriveAlign Premium OE Automatic Belt Tensioner line focuses on delivering exact OE fit and function, ensuring that replacement parts meet the same standards as factory-installed components. This product line is tailored to maintain proper belt tension automatically, reducing maintenance needs and improving accessory drive system reliability.

Common Applications and Problem Resolution

• Restores proper tension to the accessory drive belt in Smart Fortwo vehicles
• Eliminates belt slippage and associated noise
• Prevents premature belt wear and potential accessory failure
• Addresses issues related to belt misalignment or tension loss
• Supports smooth operation of alternator, power steering, and other belt-driven components

Installation Notes and Tips

• Ensure compatibility with Smart Fortwo models before installation
• Verify the mounting hole alignment and pulley orientation during replacement
• Inspect the V-ribbed belt for wear and replace if necessary
• Use proper tools to avoid damage to the thermoplastic tensioner body
• Follow vehicle manufacturer torque specifications for mounting hardware

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 39190) is manufactured to meet original equipment standards, providing reliable performance and durability. This product carries an OE comparison rating, ensuring it matches factory specifications for fit and function. Warranty coverage details should be confirmed with the product documentation or supplier.