Audi A4 A5 B8 Q5 8R Engine Piston Connecting Rod Conrod 2.0 TDI 04L107065R

Audi A4 A5 B8 Q5 8R Engine Piston Connecting Rod Conrod 2.0 TDI is an original component from the Pistons and rings group, designed for Audi diesel engines. This used OEM part allows for a technically correct repair of the power unit, maintaining factory operating parameters and the characteristics of the diesel engine.

Specifications and technical data

• SKU: 04L107065R
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L107065R
• Substitutable numbers: 04L107065R, 04L 107 065 R
• Fuel type: Diesel
• Category: Pistons & Rings

Purpose and technical specifications

The 2.0 TDI piston used in Audi A4, A5 B8, and Q5 8R models operates in a diesel engine where thermal and mechanical loads are significantly higher than in gasoline units. The piston design is optimized for:

• resistance to high combustion pressures typical of diesel engines,
• stable operation across a wide range of loads,
• compatibility with a properly selected set of piston rings,
• maintaining the correct combustion chamber geometry.

As a result, the piston ensures predictable behavior of the power unit, which translates into smooth engine operation, correct compression, and proper refinement in daily use.

Benefits of using an original Audi piston

Using an original piston in an Audi 2.0 TDI engine allows for maintaining the structural integrity of the entire crank-piston system. In practice, this means:

• factory dimensional fit to the cylinder and piston pin,
• proper cooperation with the connecting rod and bearings,
• maintaining the assembly clearances specified by the manufacturer,
• reducing the risk of incorrect compression and excessive oil consumption.

The original component from the Pistons and rings group is particularly important in diesel engines, where manufacturing precision has a direct impact on unit durability, boost pressure stability, and combustion efficiency.

Application in 2.0 TDI diesel engines

The presented piston is designed for power units fueled by Diesel, used in popular Audi mid-size models and SUVs. In such engines, the piston is responsible not only for transferring forces from the connecting rod but also for:

• shaping the combustion chamber in the cylinder head and the piston crown,
• stabilizing the operation of sealing and oil control rings,
• dissipating heat from the combustion area to the cylinder walls,
• maintaining the proper oil film on the cylinder liner surface.

A well-selected piston in a diesel engine reduces the risk of knocking, excessive vibrations, and power drops resulting from loss of compression.

Part condition and assembly aspects

The item is offered as a used piston, which allows for an economical engine repair while maintaining the manufacturer's original specifications. Before installation, a standard workshop procedure is recommended, including, among others:

• verification of the cylinder diameter and potential liner wear,
• checking the pin clearance and cooperation with the connecting rod,
• selection of an appropriate set of piston rings,
• checking assembly clearances in accordance with service documentation.

This approach allows for the safe restoration of the power unit's efficiency and limits the risk of needing further engine intervention in the near future.

Complementary items from the same group

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other components from the same group, such as additional pistons, ring sets, or cooperating sealing elements, check the available parts in the Audi Pistons and rings category.

For those considering a broader repair or tuning project using used components, it is worth checking out practical tips regarding part selection. The article Buying used car parts – common mistakes when choosing parts for tuning, which discusses typical pitfalls and best practices when working with used subassemblies, may be helpful.