Description

This listing is for a diesel particulate filter (DPF) specifically designed for the VW Golf 2.0 TDI, covering engine codes BKD and AZV, manufactured between 2003 and 2009. This Euro 4 compliant component is critical for controlling exhaust emissions and ensuring your vehicle meets legal requirements.

A diesel particulate filter is an exhaust after-treatment device that captures soot and particulate matter from the engine’s exhaust gases. It operates by filtering these harmful particles, preventing their release into the atmosphere. Over time, trapped soot accumulates, and the DPF initiates a regeneration process, where the soot is burned off at high temperatures, converting it into a fine ash. This cycle is essential for maintaining the DPF’s efficiency and the vehicle’s emission compliance.

Common failure modes for DPFs include excessive soot loading due to incomplete regeneration cycles, often caused by frequent short journeys where the engine doesn’t reach optimal operating temperature. Other factors contributing to DPF failure can be faulty engine sensors, issues with fuel injectors leading to rich mixtures, or even turbocharger oil leaks contaminating the filter. Physical damage to the ceramic substrate, such as cracks from thermal shock or external impact, can also necessitate intervention. Symptoms of a failing DPF typically include the illumination of the DPF warning light on the dashboard, reduced engine power (limp mode), increased fuel consumption, and sometimes a strong diesel smell from the exhaust.

What this diesel particulate filter (DPF) fits

This particular diesel particulate filter is suitable for:

• Vehicle: VW Golf 2.0 TDI
• Engine Codes: BKD, AZV
• Year Range: 2003-2009
• Euro Class: Euro 4
• OEM Part Number: 1K0254705LX
• Alternative Part Number: BM11055

At Gap Turbos, we offer professional and effective DPF cleaning services for this unit. Our comprehensive cleaning options include advanced workshop ultrasonic and thermal cleaning, which effectively removes accumulated soot and ash from the DPF’s internal structure, restoring its flow characteristics. For certain situations, we can also provide mobile cleaning solutions or conduct a forced regeneration using specialist diagnostic equipment. DPF cleaning is a highly cost-effective alternative to full replacement, typically saving customers between 70% and 90% of the cost, provided the internal substrate remains intact and undamaged. It is important to note that DPF removal is illegal in the UK and will result in an MOT failure.

For a precise quote and detailed information regarding our service and warranty terms, please contact us directly. We are committed to providing reliable solutions for your DPF needs.

Specifications

Vehicle fitment

• VW Golf 2.0 TDI

Common faults & troubleshooting

• DPF warning light illuminated: The DPF is either full of soot or a regeneration cycle has failed; attempt a forced regeneration or professional cleaning.
• Reduced engine power (limp mode): The engine control unit (ECU) has restricted power to protect the DPF from further damage; this requires immediate diagnosis and cleaning/repair.
• Increased fuel consumption: A blocked DPF increases back pressure, forcing the engine to work harder; address the DPF blockage promptly.
• Excessive white smoke from exhaust: This can indicate incomplete DPF regeneration or issues with fuel injection; have the DPF and fuel system checked.
• Engine oil level rising: Unburnt diesel from failed regenerations can dilute the engine oil; stop driving and seek immediate professional help to prevent engine damage.
• Strong diesel smell from exhaust: A cracked or damaged DPF can allow untreated exhaust gases to escape; inspect the DPF for physical damage.

Fitting notes for this unit

• Always replace all gaskets and sealing rings when refitting the DPF to ensure a gas-tight seal and prevent exhaust leaks.
• Ensure all pressure sensor pipes are clean and correctly connected; blockages or incorrect routing can lead to false readings and DPF issues.
• Check the differential pressure sensor and temperature sensors for correct operation and consider replacement if they are original and showing signs of age.
• Torque all DPF mounting bolts to the manufacturer’s specifications to prevent leaks and ensure secure fitment; overtightening can strip threads.
• After fitting a cleaned DPF, perform a diagnostic scan to clear fault codes and initiate a forced regeneration if necessary to recalibrate the system.
• Verify the engine oil level and quality; if the DPF was blocked, unburnt diesel may have diluted the oil, requiring an oil and filter change.

Alternative part numbers

This turbo is also referenced by:

• BM11055 — Volkswagen DPF OE BM11055 (VW Golf 2.0 TDI, BKD/AZV, Euro 4)

Frequently asked questions