Replacement for Mann PL421/1 Diesel Water Separator Filter VG1092080052 Sinotruk C7H Fuel Filter

Product Introduction

This spin-on diesel water separator filter is a domestic replacement for Mann PL421/1. As a pre-filter component for fuel systems, it integrates particulate filtration and water-oil separation. It effectively removes free water from diesel and intercepts solid contaminants such as rust, sediment and gums, protecting high-pressure fuel pumps and injectors from corrosion, wear and sticking. Its mounting dimensions and thread interface match the OEM part for direct replacement, fitting the fuel pre-filter systems of various heavy-duty trucks.

Product Advantages

1. Structurally dimensioned to fully match Mann PL421/1 with compatible interface. No pipeline modification required for direct replacement and installation.

2. Multi-layer composite hydrophobic filter media with demulsification and water separation capacity, featuring high water separation efficiency to block water from entering fuel lines.

3. Large dirt holding capacity and stable filter layer structure, resistant to deformation and collapse under heavy-load conditions for extended service intervals.

4. Fuel-resistant NBR sealing ring, resistant to diesel swelling, provides reliable sealing under high and low temperatures and prevents fuel leakage.

5. Reinforced inner support skeleton to withstand fuel pressure impact.

Technical Parameters

· Filtration Accuracy: 10μm

· Filter Media: Composite glass fiber + hydrophobic polyester water separation media

· Seal: Nitrile Butadiene Rubber (NBR) sealing ring

· Medium: Diesel

· Nominal Pressure: Max working pressure 1.0MPa

· Executive Standard: ISO 16232

Application Scope

Applied to fuel pre-filter systems of heavy-duty trucks. Also suitable for water separation pretreatment of diesel engines in construction machinery, large diesel generator sets and mining vehicles.