Diesel Fuel Fine Filter Assembly OE 1117010-Q39421C for DFAC Dongfeng Captain With LoongGine Engines

This OE 1117010-Q39421C diesel fuel fine filter uses multi-layer gradient composite filter paper with micron ultra-fine pores, efficiently intercepting micro impurities in diesel fuel without blocking fuel flow under heavy load haulage. The internal water separation layer separates free water mixed in fuel and stores it at the filter housing bottom. The matched electric water sensor connected by corrugated wiring harness transmits water accumulation alarm signal to the vehicle instrument panel, reminding drivers to drain water in advance. A manual drain bolt is reserved at the housing bottom for quick sewage discharge without disassembling the whole filter. Thick die-cast aluminum alloy housing resists fuel corrosion and high pipeline pressure, integrated mounting base and standard inlet/outlet ports 1:1 replicate Dongfeng Captain chassis fuel pipeline size, realizing plug-and-play replacement without modifying fuel hoses.

Light truck fleet maintenance technicians often face severe fuel system damage caused by inferior fuel filters: low-precision single-layer filter paper cannot filter micro impurities, leading to abrasive wear of precision fuel injector nozzle, resulting in fuel atomization failure, power drop and black smoke; ordinary filters without water separation function cannot remove mixed water in diesel, causing rust and corrosion of fuel pump and injector, even engine flameout in low temperature environment; filters without water sensor cannot remind water accumulation, delayed drainage leads to severe water mixing and fuel system failure. This genuine DFAC OEM fuel fine filter eliminates these hidden dangers completely: multi-layer high-precision media protects injectors; efficient water separation layer removes mixed water; built-in sensor realizes real-time water alarm, cutting fuel system overhaul frequency and maintenance costs for light truck fleets equipped with LoongGine engines.

As a core precision maintenance spare part of DFAC Dongfeng Captain light truck LoongGine series diesel fuel supply system, this 1117010-Q39421C fuel fine filter fully complies with Dongfeng Automobile official fuel filter production quality standards for LoongGine engines. Every finished filter assembly completes three mandatory professional durability laboratory tests: long-term fuel impurity filtration efficiency saturation test, high-efficiency water separation rate test, continuous water sensor signal stability aging test, maintaining stable purification performance under low-temperature winter, rainy humid transportation and low-quality diesel fuel working conditions. DFAC official anti-counterfeit label and laser engraved OE code are printed on the outer packaging box for genuine product traceability, all housing outline, pipeline port spacing and sensor wiring length strictly follow original vehicle factory engineering drawings, zero assembly mismatch after replacement for LoongGine engine models.

We are authorized Dongfeng wholesale supplier of genuine DFAC OEM fuel system maintenance spare parts for Dongfeng Captain light trucks with LoongGine engines, maintaining permanent sufficient stock of OE 1117010-Q39421C diesel fuel fine filter assemblies. Each fuel filter is wrapped with shockproof bubble film and thick carton packaging to prevent aluminum housing collision deformation and sensor wire damage during cross-border sea and land logistics transit. Its pre-matched mounting base and standard pipeline ports allow professional light truck maintenance technicians to finish full filter replacement within 10 minutes without refitting fuel hoses or custom fixing brackets, drastically cutting vehicle downtime for delivery fleets and light truck fuel system repair garages. We provide a 12-month anti-clogging and sensor stable operation quality warranty plus free remote fuel pipeline matching installation guidance for all worldwide bulk wholesale buyers.