Gates T42139 Engine Timing Belt Idler Pulley - Upper

Reliable Timing Belt Pulley for Audi and Volkswagen Vehicles

The Gates Timing Belt Pulley T42139 is engineered to provide precise and consistent performance for your engine's valve train system. Designed specifically for select Audi and Volkswagen models, this steel idler pulley ensures smooth operation and durability.

• Constructed from durable steel for long-lasting strength
• Inside diameter of 9 mm for accurate fitment
• Width of 34 mm and outside diameter of 28.5 mm for optimal belt alignment
• Smooth backside contact surface to reduce wear on the timing belt
• Flanged end design: no flange, suitable for specific belt routing
• Includes pulley and bolt for secure installation
• OE exact comparison rating for reliable replacement

About the Gates Timing Belt Pulley Product Line

The Gates Timing Belt Pulley line focuses on precision-engineered components that maintain proper tension and alignment of timing belts in various engine configurations. The T42139 model is part of this line, offering a steel construction and exact OE comparison rating to meet the stringent requirements of Audi and Volkswagen engines.

Detailed Product Description

This engine timing belt idler pulley is designed to fit Audi A3 and Volkswagen Beetle, Golf, and Jetta models. Its steel material provides the necessary rigidity and resistance to wear, while the smooth backside contact surface minimizes friction against the timing belt. The pulley measures 28.5 mm in outside diameter and 34 mm in width, with a 9 mm inside diameter, ensuring precise fitment and alignment within the valve train system. The absence of a flanged end suits specific belt routing paths in these vehicles. The included bolt facilitates secure mounting during installation.

Common Applications and Issues Addressed

• Maintains proper timing belt tension and alignment
• Prevents premature belt wear caused by rough or damaged pulleys
• Reduces engine noise related to timing belt misalignment
• Helps avoid engine timing errors that can lead to performance issues
• Replaces worn or damaged idler pulleys in Audi A3 and Volkswagen Beetle, Golf, and Jetta

Installation Notes and Tips

Ensure the engine is cool before beginning installation. Verify compatibility with your specific Audi or Volkswagen model year and engine type. Use the included bolt to securely fasten the pulley, and check belt tension after installation to prevent slippage or misalignment. It is recommended to inspect the entire timing belt system during replacement to identify any additional worn components.

Quality Assurance and Warranty

The Gates Timing Belt Pulley T42139 meets OE exact comparison standards, ensuring it matches original equipment specifications for fit and function. Gates products are manufactured under strict quality controls to provide reliable performance. Please refer to Gates' official warranty policy for detailed coverage information.