Audi Volkswagen Skoda Camshaft Adjuster Selenoid Valve Unit 2.0 TDI 04L906423A

Audi Volkswagen Skoda Camshaft Adjuster Selenoid Valve Unit 2.0 TDI is a precision component of the timing control system in diesel engines, designed to work with 2.0 TDI units. As part of the Camshafts group, it is responsible for the dynamic control of valve timing, which translates into stable engine operation, better flexibility, and optimized combustion in Diesel units. The used OEM component is a sensible choice for drivers looking for a technically proven solution at an attractive price.

Specifications and technical data

• SKU: 04L906423A
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L906423A
• Substitutable numbers: 04L906423A, 04L 906 423 A
• Fuel type: Diesel
• Part type: Camshaft
• Category: Camshafts

Function of the camshaft adjuster solenoid valve in the 2.0 TDI engine

The described valve operates in the timing system, controlling the oil flow to the mechanism responsible for changing the camshaft position. Thanks to this, the 2.0 TDI unit can adjust the timing phases to the current load and rotational speed, which improves engine refinement, reduces noise, and supports efficient use of Diesel fuel. A functional camshaft adjuster solenoid valve is crucial for:

• maintaining proper engine dynamics across the full RPM range,
• stable operation at idle and during acceleration,
• reducing smoke and excessive fuel consumption,
• reducing the risk of engine control unit errors related to the timing system.

Benefits of using an original valve in the VAG group

Choosing an original camshaft adjuster solenoid valve designed for 2.0 TDI engines in Audi, Volkswagen, and Skoda vehicles ensures proper fitment with the factory control system. Factory geometry and operating characteristics allow for maintaining the parameters specified by the manufacturer, without the need for modifications to the installation or software. The main advantages of using this component include:

• compatibility with the factory timing system and engine control unit,
• preservation of the torque characteristics intended by the manufacturer,
• reduced risk of adaptation problems compared to aftermarket replacements,
• possibility of economical repair without interfering with the camshaft mechanics.

Used condition and cost-effectiveness of repair

The presented valve comes from the used parts segment, which allows for a significant reduction in repair costs compared to a new OEM component. With proper diagnosis of the timing system and correct installation, a used valve can effectively restore the proper operation of the variable timing mechanism, representing a reasonable compromise between durability and budget. Such a solution is particularly attractive for cars with higher mileage, where the priority is a technically correct but economical repair without excessive burden on operating costs.

Technical support and knowledge about timing systems

When diagnosing timing problems, it is worth using reliable sources of knowledge regarding symptoms of wear of control elements, repair costs, and the selection of used parts. A good point of reference may be an article describing typical faults and repairs in modern diesel units, such as BMW engines, where precise timing control also plays a key role – more information can be found in the material about the BMW N47 timing chain and the use of original used parts.

Related items from the Audi Camshafts category

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 additional camshafts, intermediate gears, or phase control elements, check the available parts in the Audi Camshafts category.