Alfa Romeo 147 Diesel Particulate Filter DPF (2000-2010)

The Diesel Particulate Filter (DPF) on the Alfa Romeo 147, especially for diesel 1.9 JTD 16V engines, is a crucial exhaust component designed to reduce fine particulate emissions and comply with Euro 4 standards. It typically combines a DPF with a catalytic converter, made of cordierite or silicon carbide, with approximate dimensions of 900 mm length and weight ranging from 0.521 to 5.5 kg.

The DPF fits Alfa Romeo 147 diesel models produced between 2004 and 2010, including engines 1.9 JTD 16V with outputs of 120 to 150 hp. Key engine codes include 937.AXG1B, 937.BXG1B, 937A5, and 939A7000. This filter meets Euro 4 emission standards and figures within the normal production version ranges for the car.

The DPF stores carbon particulates that accumulate during diesel combustion. Regeneration is a process where these particulates burn off at high temperatures, either passively during regular driving conditions or actively forced via diagnostic tools like VCDS. This regeneration helps avoid clogging and maintains engine performance and fuel efficiency.

• Passive regeneration occurs automatically during normal driving.
• Active regeneration may be initiated when sensors detect increased soot levels.
• Forced regeneration requires a diagnostic tool to burn off accumulated particulates.

Regular regeneration is crucial to prevent pressure build-up, power loss, or engine warning lights.

Signs that the DPF may be clogged or requiring service include:

• DPF warning light illuminated on the dashboard.
• Increased fuel consumption and reduced engine power.
• Noticeable black smoke or soot from the exhaust.
• Unusual engine sounds or decreased acceleration.

Ignoring these symptoms may lead to increased backpressure and potential engine damage over time.

To maintain the DPF, cleaning additives designed for diesel particulate filters can be used before replacement. These additives help break down soot and ash deposits and are available in spray form (around 400-500 ml bottles). Some popular cleaning products include:

• DPF Cleaner sprays for catalytic converters.
• Engine oil additives designed to support regeneration.
• Other branded aerosol-based DPF cleaning solutions.

Regular use of appropriate additives combined with periodic active regeneration helps prolong the DPF's lifespan.

The DPF should be replaced when cleaning and regeneration can no longer restore proper function, typically when ash accumulation reaches its maximum capacity (around 60 g). Replacement ensures compliance with Euro 4 emission standards and avoids costly engine or exhaust damage.

Typical replacement includes:

• New, original-standard DPF with a warranty of up to 3 years.
• Cost for a new DPF for Alfa Romeo 147 models is approximately £263 including taxes, with quick delivery options.

Always ensure the replacement DPF matches the engine and vehicle specifications.

Yes, with proper diagnostic tools such as OBD scanners or VCDS for Alfa Romeo 147, you can monitor DPF status, trigger forced regeneration, and read fault codes. However, professional service is recommended to interpret results accurately and ensure safe regeneration without engine damage.

• Check DPF pressure sensors regularly.
• Perform forced regeneration if passive methods fail.
• Consult your dealer or a specialist if warning lights persist.

Proper diagnosis helps avoid premature replacement and maintain optimal fuel consumption and emissions control.

Quality DPFs and cleaning additives are available directly from trusted manufacturers with factory warranties, including Krosfou products offering advanced stainless steel construction and certified performance.

• DPFs comply with OEM specifications and Euro 4 norms.
• Products come with at least a 3-year warranty and support.
• Delivered quickly across Europe with options for express shipping.

It is highly recommended to verify compatibility by engine code and vehicle registration to ensure the right part is selected. Always prioritize genuine new parts over refurbished or non-certified units for lasting reliability.

Consult official technical guides or professional technicians if unsure about installation or servicing.