Seat Leon Mk3 VW Golf R Mk7 DSG Transmission Filter Housing 02E305045

Seat Leon Mk3 VW Golf R Mk7 DSG Transmission Filter Housing is an original transmission system component designed for use in vehicles equipped with a DSG dual-clutch transmission. Thanks to its factory-spec design, it ensures proper guidance of the filtering medium and stable filter mounting, which translates into safe transmission operation and predictable drivetrain performance. This is a practical solution for users who want to restore the correct seal and geometry of the transmission oil filtration system.

Specifications and technical data

• SKU: 02E305045
• Mark: Seat
• Condition: Used
• OEM Part Number: 02E305045
• Substitutable numbers: 02E305045, 02E 305 045
• Category: Transmission Filters

Purpose and function of the DSG filter housing

The filter housing in a DSG transmission is responsible for the precise seating of the filter cartridge and maintaining the proper flow of transmission oil. In vehicles such as the third-generation Seat Leon and the seventh-generation VW Golf R, this component is crucial for:

• maintaining the tightness of the transmission lubrication system,
• stable positioning of the filter within the transmission body,
• reducing the risk of contaminants in the oil circuit,
• ensuring correct operating pressure in the DSG transmission.

A properly selected filter housing allows for maintaining repeatable transmission performance parameters, which is particularly important in higher-power units typical of R versions and dynamic Seat variants.

Benefits of using the original housing

Using a factory filter housing in a DSG transmission reduces the risk of leaks and fitment issues that can occur with non-original parts. The main advantages include:

• maintaining the geometry specified by the vehicle manufacturer,
• compatibility with the original filter and transmission accessories,
• easier installation thanks to factory mounting points,
• consistency with other drivetrain components.

For users planning a service or repair of a DSG transmission, selecting the appropriate filter housing is one of the steps that allow for stable and predictable transmission operation.

Application in service practice

When replacing the oil filter in a DSG transmission, mechanical or fatigue damage to the housing—such as cracks, deformations, or wear of the mounting sockets—often becomes apparent. In such situations, replacing just the filter cartridge is not sufficient, and it is necessary to use a complete, functional housing. The presented component allows for:

• restoring the correct filter seating after previous repairs,
• eliminating oil leaks in the filter area,
• reducing the risk of air entering the transmission lubrication system,
• replacing a missing component after dismantling a damaged transmission.

This solution is particularly useful when repairing vehicles driven dynamically, where the DSG transmission operates under higher thermal and mechanical loads.

Part condition and vehicle compatibility

The filter housing comes from the Seat range and is a component from the Transmission filters group, which makes it easier to match to specific drivetrain configurations. As a used part, it represents a reasonable compromise between repair costs and maintaining factory design specifications. Before installation, standard service verification of the sealing surface and the condition of the mounting sockets is recommended.

If you are planning a comprehensive transmission service, it is worth checking out our guide on common faults and selecting dual-clutch transmission components – detailed information can be found in the article on the differences between manual, automatic, and DSG transmissions and purchasing a used transmission.

Support for repairs and dismantled parts

In the case of older Seat Leon Mk3 or VW Golf R Mk7 models, the availability of new components at authorized service centers may be limited. In such cases, well-selected parts from dismantling allow you to keep the vehicle in full working order at controlled costs. You can read more about how to effectively use such solutions in the material dedicated to repairing older models using parts from dismantling.

If you are gathering components for a transmission service or drivetrain upgrade, also check out other products in the Transmission filters category to select a consistent set of components for your vehicle.