Mercedes GLS-Class Diesel Particulate Filter DPF X166 (2015-2019)

The Diesel Particulate Filter (DPF) is installed mainly on diesel versions of the Mercedes-Benz GLS X166, primarily with the OM642.826 / OM642.864 engines (e.g., 350 d 4-MATIC, 350 BLUETEC 4-MATIC or 350 CDI) from 2012 onward. These engines deliver approximately 258 hp / 190 kW and were produced between November 2015 and May 2018 for certain GLS 350 CDI BT 4MATIC variants.

The key technical features of the DPF installed on the Mercedes GLS X166 include :

• Weight: about 6.2 kg
• Length: 810 mm
• Material: Cordierite ceramic, resistant to high temperatures
• Original Equipment (OE) references: A1664907300, A1664908936
• Reference for cleaned filters: D1376
• Compatible with related Mercedes ML/GLE/GL/GLS models W166/X166/C292 with the same OM642 engines

The system integrates a catalytic converter (catalytic converter), DPF, and SCR system to comply with current diesel emission standards.

Available products include :

• Professionally cleaned DPF with mounting kit and 6-month warranty. Requires return of old DPF for recycling, priced around €959.90 minus €720 refundable deposit.
• New DPFs manufactured to OEM specifications and meeting EU standards from reputable suppliers.
• DPF cleaning sprays (e.g., 400 ml aerosol) for maintenance to prevent clogging, usable at temperatures between 5-30°C.

Always verify compatibility with your vehicle model before ordering.

Proper maintenance is crucial to prolong the DPF’s service life :

• Professional ultrasonic or chemical cleaning of used DPFs restores them near to new condition.
• Regular use of cleaning additives or sprays helps prevent soot and particulate build-up.
• Signs of clogging include loss of power, DPF warning light activation, and forced regeneration cycles.

Opting for cleaned DPFs is environmentally friendly and cost-effective due to deposit refund schemes.

Common signs of DPF issues include :

• Reduced engine power and performance
• Illumination of the DPF warning light on the dashboard
• Frequent or forced DPF regeneration cycles

If any of these symptoms occur, it is advisable to check the DPF condition and consider cleaning or replacement.

Reliable DPFs are available through specialised automotive parts suppliers and manufacturers offering :

• High-performance new DPFs made with stainless steel INOX 409 and advanced ceramic monoliths
• Certified products meeting or exceeding original equipment standards
• Professional technical support and compatibility verification services based on VIN or part references

Look for suppliers who provide warranties (typically 3 years or limited to 100,000 km) and support recycling of returned old parts.

Krosfou DPFs present advantages such as :

• 3-year warranty and TÜV SÜD certification confirming technical quality equal to or above OEM parts
• Manufacture in Europe using premium materials and unique thin-layer coatings for durability and performance
• Direct-from-factory pricing and professional customer support
• Commitment to environmental responsibility via reuse and recycling programs

These qualities ensure excellent efficiency and peace of mind for GLS X166 drivers.

The Diesel Particulate Filter is a vital component in reducing diesel engine emissions by trapping soot and particulates from the exhaust gases.

• It is installed downstream of the engine and catalytic converter in the exhaust system.
• The DPF uses a ceramic honeycomb structure to capture particulate matter.
• Periodic regeneration burns off accumulated soot to maintain flow and emissions compliance.
• The system is monitored by engine control units and sensors to optimize efficiency and signal maintenance needs.

This integrated setup improves environmental performance while maintaining engine power and driver comfort.

Regular checks and proper maintenance of the DPF and related exhaust components are recommended to ensure optimum results.