Audi Q7 Diesel Particulate Filter DPF

The Diesel Particulate Filter (DPF) on an Audi Q7 is an exhaust system component designed to capture and remove soot particles from the diesel engine's exhaust gases. It helps the vehicle comply with Euro 4 emission standards by reducing harmful particulate emissions and is typically located under the seat or integrated into the exhaust line depending on the model.

Several Audi Q7 diesel models are equipped with a DPF, including:

• Audi Q7 3.0 TDI V6 24V (engine codes CASA, CASB, CASC, CCMA, BUN) from 03/2006 to 05/2010 or 11/2007 to 04/2011
• Audi Q7 3.0 TDI Quattro (233 HP, Euro IV)
• Audi Q7 4.2 TDI Quattro (326 HP) with an integrated DPF to reduce pollutants

There are also cross-compatibilities with vehicles like the Porsche Cayenne and Volkswagen Touareg 3.0 TDI within specific production dates and engine codes.

The DPF works by capturing soot particles from the exhaust gases and requires periodic regeneration to burn off these accumulated particulates. The process has two main phases:

• Passive regeneration: Occurs on highways or at high speeds when exhaust temperature exceeds 600°C, burning trapped soot naturally.
• Active regeneration: Needed during city driving or short trips; you should maintain a steady speed above 130 km/h (around 3000 RPM in 4th gear) for at least 30 minutes to allow the filter to clean itself.
• Professional cleaning: Recommended if the DPF is heavily clogged, using ultrasonic or high-pressure washing techniques.
• Diesel additives: These liquid products help lower the ignition temperature of soot and extend the DPF’s lifespan when used regularly.

The exhaust gases first pass through the catalytic converter (oxidising hydrocarbons and carbon monoxide) and then through the DPF for particulate filtration.

Common symptoms indicating DPF issues include:

• Illuminated DPF warning light indicating soot saturation or clogging, frequent in urban driving conditions especially for the 4.2 TDI Quattro model.
• Noticeable loss of engine power.
• Increased black smoke emissions from the exhaust.
• Higher fuel consumption than normal.

If these symptoms appear, a diagnostic via an OBD tool is recommended to confirm and address DPF issues promptly.

Yes, brand-new DPFs (not refurbished) that meet manufacturer and European standards are available for Audi Q7 models. Key parts references include:

• OE part numbers: 7L8254400NX, 955113023GX, 958113023DX
• Aftermarket references: DPF153 (includes free mounting kit KIT741), PAM1081DPF, DPF-G1098S (silicon carbide, tested to UNECE Regulation 103-Rev.1)

Replacement DPFs come with mounting kits, fitting instructions, and a 2-year warranty (sometimes 1 year if from stock clearance).

Yes, Krosfou brand new DPFs for Audi Q7 come with a 3-year warranty, limited to 100,000 kilometres usage. This warranty starts from the date of receipt of the product.

The products are manufactured in Europe with stainless steel INOX 409 and high-quality monoliths, certified by TÜV SÜD and meeting or exceeding original equipment specifications.

• This warranty covers manufacturing defects and product reliability under normal installation and use conditions.
• Warranty does not cover improper installation or damage due to neglect or external factors.

For warranty claims or technical support, customers can contact the supplier’s technical team who offer assistance and installation guides.

To prevent DPF clogging and prolong its life, it is recommended to:

• Alternate driving between city and longer highway trips to allow passive regeneration at high exhaust temperatures.
• Use recommended diesel additives every 5,000 km to help lower soot combustion temperature.
• Regularly perform OBD diagnostics especially if the DPF warning light is on.
• Have professional cleaning performed if warning lights persist or power loss is detected.
• Prefer genuine or high-quality European-made DPF replacements to ensure reliability and compliance with emission standards.

Specialised garages familiar with Audi/VAG vehicles can provide proper maintenance, professional cleaning, or replacement services.

Additional information, product purchases, and technical support are available from specialised suppliers and online platforms offering genuine or certified DPFs and accessories in Europe. Key reliable resources include:

• Direct factory suppliers like Krosfou providing genuine European-manufactured DPFs with warranty and fast shipping.
• Websites offering technical documentation, fitting guides, warranty info, and regeneration tutorials.
• Professional diagnostic services for DPF and particulate sensor faults.
• Recycling services for used monoliths containing precious metals.

Always verify part compatibility using your vehicle’s VIN and confirm installation details with authorised dealers or qualified garages.

Choosing genuine parts and following manufacturer instructions ensures optimal vehicle performance, emissions compliance, and product longevity.