Subaru Legacy Diesel Particulate Filter DPF

The Diesel Particulate Filter (DPF) is an essential anti-pollution device installed on modern Subaru Legacy diesel models. Its main function is to trap fine soot particles from diesel combustion to reduce harmful emissions and comply with environmental standards. Over time, the filter accumulates soot and ash deposits which can clog the system, especially in 2.0D engines (EE20Z, 150 hp, Euro 4/5).

DPFs are fitted on several Subaru Legacy diesel models including:

• Legacy IV 2.0 D 4WD (BLD) and Legacy IV SW 2.0 D 4WD (BPD) – Euro 4/5 standard
• Legacy V 2.0 D 4WD (BMD) and Legacy V SW 2.0 D 4WD (BRD) – Euro 5 standard

These filters are also compatible with Subaru Forester, Impreza, Outback, and XV 2.0 16V diesel models from 2010 to 2017.

Common causes of DPF clogging include:

• Short trips at low engine speeds that prevent passive regeneration
• Accumulation of soot and incombustible ash deposits over time

Symptoms of a clogged DPF are:

• Frequent or failed regeneration attempts
• Engine performance reduction and compression issues
• Potential failures in turbocharger, EGR valve or injectors
• Increased fuel consumption

The DPF is integrated into the exhaust line to capture harmful particles during combustion.

There are mainly two approaches:

• Professional cleaning: Uses high-pressure reverse flow technology to restore the filter’s original performance without replacement. This is a cost-effective and durable solution compared to temporary additives.
• Replacement with a new DPF: Original parts ensure guaranteed quality and compliance with manufacturer and European norms, suitable for Legacy IV and V models and similar Subaru diesels.

Adaptable replacement DPFs are also available for various Subaru diesel models with options to search by OEM reference or vehicle registration.

Yes, detailed step-by-step tutorials and free videos are available to guide you through dismantling, cleaning or replacing the DPF on your Subaru Legacy, including exhaust system handling instructions.

However, ensure you have the proper tools and knowledge to safely perform these tasks or consult a professional if unsure.

To prevent DPF clogging, it is important to:

• Regularly drive the car on highways at proper speeds to allow passive regeneration of the DPF
• Monitor engine oil quality and change intervals to minimize contamination and dilution
• Address any engine faults early, especially EGR valve issues, which can impact DPF regeneration and soot accumulation

Professional engine cleaning services can also help reduce soot buildup associated with the DPF.

Krosfou offers brand-new, high-performance DPFs manufactured in Europe with top-grade stainless steel and advanced ceramic monoliths. Every product comes with a 3-year warranty covering up to 100,000 km, ensuring reliability and compliance with European standards equal or superior to original equipment.

• TÜV SÜD certified quality
• Manufactured in INOX 409 stainless steel for durability
• State-of-the-art technology contributing to reduced emissions and improved engine performance

Ordering direct from Krosfou guarantees the best price-quality ratio and factory support.

For up-to-date information and technical support regarding DPF cleaning, faults, or replacements on Subaru Legacy:

• Consult Subaru specialist forums and communities focusing on diesel particulate filter issues
• Access installation and maintenance manuals, plus free tutorial videos specific to Subaru Legacy diesel models
• Use diagnostic tools to log DPF parameters like soot levels, regeneration frequency, and fault codes
• Reach out to trusted local professionals or specialists offering DPF cleaning services

Always verify part compatibility by VIN and refer to official Subaru service recommendations to ensure proper DPF maintenance.