Audi A3 8V Volkswagen Golf Mk7 Engine Crankshaft 1.6 2.0 TDI Diesel 04L105021D

Audi A3 8V Volkswagen Golf Mk7 Engine Crankshaft 1.6 2.0 TDI is a factory-made component of the crank-piston system designed for diesel engines, ensuring stable operation of the power unit. Thanks to its precise geometry and fitment for the specific Diesel engine family, the crankshaft guarantees proper transfer of combustion forces to the drivetrain. This is a solution for users looking for a proven component with a design compliant with the manufacturer's standards.

Specifications and technical data

• SKU: 04L105021D-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L105021D
• Substitutable numbers: 04L105021D, 04L 105 021 D
• Fuel type: Diesel
• Category: Crankshafts

Purpose and compatibility

The presented crankshaft belongs to the Crankshafts category and is dedicated to popular VAG group models, such as the Audi A3 8V and Volkswagen Golf Mk7 with 1.6 and 2.0 TDI engines. The design has been developed for specific diesel units, which translates into proper balancing, adequate rigidity, and the maintenance of operating parameters in accordance with the manufacturer's specifications. The component is intended for diesel-powered engines, which is why its geometry, oil channels, and mating surfaces are adapted to the operating characteristics of Diesel units, including the higher combustion pressures and dynamic loads typical of modern TDI engines.

Technical and functional characteristics

The crankshaft is responsible for converting the reciprocating motion of the pistons into rotational motion, which is why precise main and connecting rod journals, proper balancing, and dimensional stability are crucial. The applied design ensures:

• smooth transfer of torque to the flywheel and other drivetrain components,
• cooperation with the engine lubrication system through properly routed oil channels,
• maintenance of correct operating clearances in combination with main and connecting rod bearings. By maintaining factory geometry, the crankshaft allows for the restoration of the power unit's original operating parameters after a major overhaul or partial engine regeneration. This is particularly important in modern TDI units, where dimensional tolerances are very strict.

Condition, origin, and service application

The offered component comes from the Audi brand and is classified as used, which allows for economical repair while maintaining the original design. This type of crankshaft will prove useful both for comprehensive engine rebuilding and for replacing a damaged component in the event of seizure, excessive journal wear, or mechanical damage. In workshop practice, using an original crankshaft from the same engine family facilitates the assembly process, the fitting of bearings, and the checking of clearances, while also reducing the risk of problems with balancing and torsional vibrations. This solution is particularly valued by mechanics specializing in VAG group TDI units.

Benefits of using an original crankshaft

Choosing an original crankshaft for the Audi A3 8V and Volkswagen Golf Mk7 allows for maintaining the structural consistency of the entire crank-piston system. The most important advantages include:

• compliance with factory parameters of 1.6 and 2.0 TDI engines,
• easier diagnostics and wear monitoring during assembly,
• the ability to use standard service procedures and tightening torques,
• reduction of the risk of improper fitment with the engine block and connecting rods. A crankshaft selected in this way helps restore the power unit's refinement, reduce vibrations, and ensure stable operation across the full RPM range, which is significant for both engine durability and driving comfort.

Crankshaft system expansion and brand knowledge

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as connecting rods, bearings, or pulleys, check the available parts in the Audi Crankshafts category. If you want to better understand how the selection of original components affects the handling characteristics and durability of cars of this brand, it is worth reading the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, which shows how properly selected elements help preserve the vehicle's factory properties.