Audi A4 B8 A5 8T Engine Toothed Belt Timing Pulley 3.0 TDI Diesel 059130111Q

Audi A4 B8 A5 8T Timing Belt Sprocket 3.0 TDI Diesel is a part from the Tensioners and Rollers category, designed for the timing system in Audi diesel engines. A used original part helps maintain the engine's factory operating characteristics, ensuring stable timing belt drive transfer and correct engine synchronization.

Specifications and technical data

• SKU: 059130111Q
• Mark: Audi
• Condition: Used
• OEM Part Number: 059130111Q
• Substitutable numbers: 059130111Q, 059 130 111 Q
• Fuel type: Diesel
• Part type: Timing Belt Pulley
• Category: Tensioners & Pulleys

Purpose and Function of the Timing Belt Sprocket

The presented sprocket works with the timing belt in the 3.0 TDI Diesel engine, responsible for precise torque transfer between the timing system components. A correctly selected sprocket reduces the risk of belt slippage, contributes to stable valve operation, and consequently to the engine's smooth running.

In conjunction with other elements from the Tensioners and Rollers group, it forms a cohesive, mechanically matched set that is crucial for engine durability and vehicle operational safety.

Compatibility with Audi A4 B8 and A5 8T

The sprocket has been designed for use in Audi A4 B8 and Audi A5 8T models with diesel engines. This ensures the correct tooth geometry, appropriate profile for belt interaction, and compatibility with the factory timing system of these models.

This allows for a factory-like installation process – without the need for modifications to other system components. Proper fitment translates to:

• stable timing belt operation across the entire RPM range,
• maintaining correct synchronization between the crankshaft and the timing system,
• reducing the risk of excessive wear on interacting components.

Technical Characteristics and Role in the Timing System

As a component of the diesel engine's timing system, the sprocket operates under significant mechanical load. The design intended for 3.0 TDI units ensures adequate rigidity and resistance to the variable loads resulting from diesel engine operation. The appropriately selected tooth profile supports correct belt guidance, which is important for both belt durability and the other tensioning elements.

The proper condition of the sprocket is particularly important during timing belt service – a worn or damaged part can accelerate belt degradation and, in extreme cases, lead to serious engine damage. Using an original component from the same design family as the factory part helps to limit such risks.

Condition of Used Part and Installation Aspects

The offered sprocket is a used part, sourced from disassembly, which presents an attractive solution for users seeking a compromise between cost and maintaining factory specifications. Choosing an original used part is often preferred over inexpensive aftermarket alternatives with uncertain parameters, especially in critical systems like the timing system.

Before installation, standard service procedures are recommended: checking the condition of the working surfaces, correctly setting the timing marks, and applying the appropriate torque values according to the vehicle manufacturer's service documentation. This approach allows for the full utilization of the part's potential and ensures trouble-free operation.

Audi Tensioners and Rollers – Selecting Related Components

When planning timing system maintenance, it is advisable to consider the simultaneous replacement of other components from the Tensioners and Rollers category dedicated to this brand. If you need additional components from the same group, check the available Audi tensioners and rollers to assemble a cohesive service kit tailored to your model.

Practical Service Tips

When working on the timing system in a diesel engine, it is worth paying attention to the overall condition of the engine's auxiliary components, including those responsible for fuel supply and charging. If you have doubts about the condition of the electrical components, a guide on alternators may be helpful – you can find more information in the article When is it Worth Replacing an Alternator with a Used One: A Practical Guide for Drivers, which discusses practical aspects of selecting and replacing used components.