MANN WDK999/1 diesel filter

SC880102 WDK999/1 Spin-On Diesel Fuel Filter SC880102 is the aftermarket equivalent part number fully interchangeable with original Mann Filter WDK999/1, cross referenced with OEM code 1117011-630-0000W and Donaldson P550004. It is a high-efficiency spin-on fine diesel fuel filter specially developed for FAW Xichai Aowei series engines, Weichai WP6 and Deutz common rail diesel engines widely equipped on FAW J6P, JH6 heavy-duty trucks, medium commercial vehicles and small construction machinery. Installed on the rear fuel pipeline before high-pressure fuel pumps and precision common rail injectors, it acts as the core secondary precision filtration component of the fuel supply system. This filter adopts dual-stage filtration structure, which can efficiently intercept large impurities including rust particles, coarse sand and sediment in the outer layer, and trap micro fine silt, carbon sludge and colloidal abrasive particles in the inner layer, effectively preventing scratch wear, clogging and premature damage of precision fuel injection components. Manufactured strictly in accordance with IATF 16949 automotive quality standards and ISO 19438 filtration testing standards, it maintains stable 3μm high-precision filtration performance during long-distance highway logistics transportation, dusty mountain construction roads, high-temperature tropical regions and frigid low-temperature northern working environments. As a perfect OEM direct cross replacement filter for original Mann WDK999/1, SC880102 and P550004, it stabilizes continuous engine power output, reduces unexpected vehicle downtime, and significantly extends the service life of expensive fuel injectors and high-pressure oil pumps for heavy truck fleets.  Product Material Description: High-Strength Thickened Carbon Steel Outer Housing: Standard dimension: OD 93mm, total height 143mm, thread specification M18×1.5 internal threadMANN-FILTER. Made of thick cold-rolled high tensile carbon steel with full electrophoretic anti-rust and anti-corrosion coating. It features outstanding pressure resistance and impact resistance, capable of enduring long-term rated fuel system working pressure without expansion, cracking or diesel leakage, providing comprehensive stable outer protection for internal filter media. Two-Layer Gradient Composite Filter Media: Outer synthetic pre-filter layer + inner imported resin-impregnated wood pulp filter paper, processed with deep dense pleated folding design to maximize effective filtration area. The progressive gradient density structure realizes staged step-by-step filtration, balances excellent contaminant capture efficiency and ultra-low flow resistance, ensuring sufficient smooth fuel supply even under full engine rated load. Industrial Grade NBR Nitrile Rubber Sealing Gasket: Premium oil-resistant high-temperature nitrile rubber seal ring, resistant to long-term diesel soaking, thermal aging and drastic temperature fluctuations. It retains stable sealing elasticity within working temperature range of -35℃ ~ 125℃, completely preventing bypass of unfiltered raw fuel and oil leakage at the mounting joint. Precision CNC Machined Thread Base: Solid carbon steel threaded base with accurate M18×1.5 thread tolerance and rigid structural strength, designed for quick spin-on installation and easy disassembly during daily routine maintenance.