VW Volkswagen Golf Mk6 Diesel Engine Fuel Filter Pump Filter Housing 1K0127400L

VW Volkswagen Golf Mk6 Diesel Engine Fuel Filter Pump Filter Housing is an original fuel system component, designed specifically for diesel units. Thanks to its precise construction, it ensures stable fuel supply, proper filtration of impurities, and correct engine operation during daily use. This solution is intended for users who expect factory fitment and reliable compatibility with the Volkswagen fuel system.

Specifications and technical data

• SKU: 1K0127400L
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 1K0127400L
• Substitutable numbers: 1K0127400L, 1K0 127 400 L, 1K0127399CC, 1K0 127 399 CC, 1K0127399CM, 1K0 127 399 CM
• Fuel type: Diesel
• Category: Fuel Filters

Purpose and function in the fuel system

The presented fuel filter housing integrated with a pump is a component of the diesel engine fuel system in the Volkswagen Golf Mk6. It is responsible for:

• maintaining the appropriate fuel pressure at the inlet to other system components,
• stable flow of diesel fuel through the filter element,
• separation of solid contaminants present in the fuel,
• reducing the risk of particles entering the injectors and the high-pressure pump.

A module configured in this way allows for maintaining proper diesel engine operating culture, facilitates starting, and supports smooth power delivery across the entire rev range.

Construction and key technical features

The fuel filter housing with pump is designed as a complete unit mounted in the engine bay. The applied construction ensures:

• a rigid, sealed housing adapted for operation with diesel fuel,
• integrated connection ports for fuel lines,
• a space for a filter element matched to the requirements of the diesel engine,
• a built-in low-pressure pump working with the rest of the system.

Thanks to this, the entire module works as a cohesive fuel system component, reducing the number of connections and potential leak points. This type of solution also facilitates service – access to the fuel filter is organized at a single point.

Benefits of using the original fuel filter housing

Using an original component intended for the Volkswagen Golf Mk6 brings a number of practical benefits:

• Factory fitment – maintaining compatibility with the vehicle's fuel system without the need for modifications.
• Appropriate pump operating characteristics for the diesel engine, supporting correct supply pressure.
• Proper fuel flow geometry through the filter, which promotes effective cleaning.
• Trouble-free servicing based on standard manufacturer procedures.

A module selected in this way helps reduce the risk of failure of injectors and other fuel system components, which in diesel engines has a direct impact on operating costs.

Component condition and service application

The offered fuel filter housing with pump is a used component intended for service applications in vehicles where the factory module has worn out or been damaged. Replacing the complete housing with the pump is particularly justified when problems arise with:

• irregular diesel engine starting,
• power drops resulting from insufficient fuel supply,
• leaks in the fuel filter area,
• mechanical damage to the housing.

Selecting the correct component is facilitated by the OEM marking and related replacement numbers visible in the technical specification, which allows for verifying compatibility with a specific engine version of the Golf Mk6.

Technical support and selection by part numbers

For fuel system components, correct part identification is particularly important. It is worth using manufacturer markings and reference numbers to avoid installing an unsuitable module. For users who want to deepen their knowledge about diagnostics and fuel system operation, the following article will be helpful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

If you are planning a comprehensive repair or upgrade of the engine area in your Volkswagen and need other components from the same group, such as fuel filter inserts, fuel lines, or additional filter housings, check the available parts in the Volkswagen fuel filters category.