Mercedes Viano Diesel Particulate Filter DPF W639 (2003-2014)

The Diesel Particulate Filter (DPF) for the Mercedes Viano W639 is an emission control device designed to capture and remove soot (particulate matter) from the exhaust gas of diesel engines. It helps comply with Euro 5 emission standards by filtering harmful particulates and reducing pollution.

The DPF is compatible with multiple diesel variants of the Mercedes Viano W639, including:

• 2.2 CDI - 2143 cm³ with 136 hp (100 kW) and 163 hp (120 kW)
• 2.1 CDI - 2143 cm³ with power from 95 hp to 163 hp depending on the specific version
• 2.0 CDI - for compact models

Please ensure you check engine specifications before purchasing to ensure compatibility.

The Mercedes Viano W639 DPF features:

• Weight: Approximately 4.6 kg
• Length: About 1135 mm
• Material: Made of durable Cordierite ceramic
• Emission Standard: Designed for Euro 5 compliant vehicles

These specifications ensure durability and effective particulate filtration for your vehicle's exhaust system.

The DPF system operates automatically and transparently to the driver. It uses two pressure sensors to detect soot accumulation by measuring the differential pressure between the inlet and outlet of the filter.

• When soot build-up causes a high pressure difference (delta P), the engine control unit triggers an active regeneration process.
• During regeneration, the filter temperature rises to around 550°C.
• Diesel fuel is injected to help burn off the soot deposits naturally.
• The engine temperature increases from roughly 80°C to 100°C over 15 to 20 minutes to complete the process.

This process helps maintain DPF efficiency without driver intervention.

There are several DPF versions depending on the position of the pressure sensor (sonde):

• Sensor hole on the left side (driver’s side) - known as version DPF090
• Sensor hole on the right side - an alternative version
• Without any lateral sensor hole - a version without an integrated sensor

It is crucial to verify the exact sensor location on your vehicle before selecting a DPF to ensure correct fit and function.

For optimal DPF life span and performance:

• Replacement is generally recommended every 180,000 km and during major vehicle services.
• Regular active regeneration during driving, especially on highways at constant speeds (80 km/h or more), helps burn off soot deposits.
• For mainly urban driving or short trips, soot accumulation is faster due to insufficient filter temperature, risking earlier blockages (around 120,000 km).
• If blockage occurs, options include replacing the filter or cleaning it (such as with special cleaning techniques available if the filter is accessible).

Proper driving habits and timely servicing are crucial to prevent DPF faults and related engine warning lights.

The Euro 5 Mercedes Viano W639 is equipped with a combination of:

• A Diesel Oxidation Catalytic Converter (DOC)
• A Diesel Particulate Filter (DPF)

This set-up provides a cleaner exhaust compared to Euro 4 systems, which only feature a DOC, but it is less complex than Euro 6 systems which have additional components like urea injection and SCR technology.

Typical market pricing for a Mercedes Viano W639 DPF is around €230 including VAT after discounts. Prices may vary based on supplier and stock availability.

• Compatible OEM part numbers include Mercedes references such as 6394901092 and A6394900292.
• DPF units are usually supplied with a mounting kit for installation convenience.
• High-quality new DPFs are manufactured with advanced materials like stainless steel and feature certified technologies.
• Krosfou offers a 3-year warranty limited to 100,000 km of use, covering manufacturing defects when installed and used according to guidelines.

Always ensure purchases are made from reputable sources offering genuine new parts to guarantee quality, warranty support, and environmental compliance.