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High-Quality Oil-Water Separator FS19789 Fuel Filter for Dongfeng Models 1119ZD2A-030 FS36202 AS-97818

The Fuel Water Separator Filter (Part No. 1119ZD2A-030) is an OEM-specified high-efficiency diesel fuel filter designed primarily for Dongfeng commercial vehicles equipped with Cummins-powered engines. As a critical component in modern diesel fuel systems—especially those featuring high-pressure common rail (HPCR) injection technology—this filter plays a vital role in protecting sensitive fuel injectors from water contamination and sub-micron particulates.

Manufactured to meet or exceed original equipment standards, this spin-on type filter integrates advanced multi-layer filtration media with effective oil-water separation capabilities, ensuring clean, dry fuel reaches the engine’s precision components. It is widely used across China's heavy-duty trucking, construction, and power generation sectors.
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  • 1119ZD2A-030

  • Dongfeng

Attribute Specification
Product Name Fuel Water Separator Filter / Primary Diesel Fuel Filter
Manufacturer Dongfeng Commercial Vehicles Co., Ltd. (OEM); commonly co-developed with Fleetguard
Primary Part Number 1119ZD2A-030
Alternative Names Fuel Filter, Water-in-Fuel Separator, Spin-On Fuel Canister
Filter Type Full-flow, spin-on disposable design
Mounting Style Threaded base with O-ring seal; direct screw-on installation
Function Removes water and solid contaminants from diesel fuel
Filtration Principle Depth filtration + coalescing technology for water separation
Housing Material Reinforced steel shell with corrosion-resistant coating
Sealing Method Nitrile rubber O-ring (approx. 90mm OD, 80mm ID)
Application Class Heavy-Duty Diesel Engines – Trucks, Construction Equipment, Generators
油水分离器-3


油水分离器-4


Parameter Value / Detail
Overall Height 264–274 mm (10.4–10.8 inches)
Outer Diameter (OD) 108–110 mm (4.25–4.33 inches)
Thread Size 1" - 14 UNS (Unified National Special thread)
Seal Dimensions
- O-ring Outer Diameter ~90.4 mm
- O-ring Inner Diameter ~80.4 mm
Filter Media Multi-layer synthetic paper or StrataPore®-type composite material
Filtration Efficiency ≥ 99.99% at 10 microns (nominal), down to 4–5 µm absolute
Water Separation Efficiency > 95% of free and emulsified water under standard flow conditions
Maximum Working Pressure Up to 7 bar (100 psi)
Operating Temperature Range -30°C to +120°C (-22°F to +248°F)
Inlet/Outlet Port Sizes Compatible with M14×1.5, M16×1.5, or M18×1.5 fuel lines
Drain Feature Bottom-mounted drain valve or transparent water collection bowl (depending on housing)
Recommended Replacement Interval Every 8,000–20,000 km (based on fuel quality and operating environment)


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