Dongfeng Dignity IX5 Fuel Filter Assy (Part No.: 1117140F0000A)
This Fuel Filter Assy—part number 1117140F0000A—is a super important barrier that keeps gunk out of the Dongfeng Dignity IX5’s
fuel system. Basically, it works like a cleaner for the fuel that goes into the engine. It fits most 2019 to 2023 IX5 models, and works perfectly with the car’s 1.5T turbo engine (the DK15C) and 2.0L naturally aspirated engine (the DFMB20). Its main job? Filter out all the junk in the fuel—things like tiny metal shavings, dust, and even water. That stuff can sneak into the fuel when it’s stored, when you fill up the tank, or as the fuel tank wears down over time. If this filter isn’t working
right, all that gunk will mess up sensitive parts like the fuel injectors and
fuel pump. That leads to the engine running poorly, using more gas, or even breaking down completely. Below’s a closer look at what this part does:
This fuel filter isn’t just a simple sieve—it has three key jobs to keep the fuel clean and the engine running smoothly:
Catching Tiny Junk: It grabs solid bits of gunk as small as 10 to 20 microns—that’s roughly 1/5 as thick as a human hair! The junk includes little metal shavings from the fuel tank wearing down inside, dust that gets mixed in when you fill up, and rust flakes from old fuel lines. Even those tiny bits can scratch the fuel injector’s super precise nozzle (its hole is only about 0.1mm wide) or clog it up. That makes the fuel spray uneven and the engine run roughly when it’s idling.
Separating Water from Fuel: A lot of these filters (including the 1117140F0000A) have a built-in layer that soaks up water or a little chamber where moisture settles. Moisture gets into fuel from things like condensation inside the tank or using low-quality gas. That water gets separated out and collects at the bottom of the filter—and good thing, too: water in fuel can cause rust on the injectors, short circuits in the fuel pump, or even “hydrostatic lock” (that’s when the engine seizes up if the problem’s really bad).
Protecting the Fuel System: By making sure only clean, dry fuel gets to the fuel pump and injectors, it makes those parts last longer. This is extra important for the IX5’s 1.5T turbo engine, which needs more fuel pressure. If the injectors get clogged, it makes the turbo less effective and turns on the check engine light—codes like P0201 to P0204 usually mean there’s a problem with the injectors.
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The filter’s working process is a straightforward "one-way purification flow"—fuel passes through it once before reaching the engine, ensuring no unfiltered fuel bypasses:
Fuel Inlet: Fuel is pumped from the fuel tank (via the electric fuel pump) into the filter’s inlet port. The inlet is designed with a "flow guide" to distribute fuel evenly across the filter element (no localized clogging).
Primary Filtration: Fuel first flows through the outer layer of the filter element, where large impurities (≥20 microns, like dust clumps or metal shavings) are trapped.
Fine Filtration & Water Separation: Next, fuel seeps into the inner layer of the filter paper, which traps smaller impurities (10–20 microns). If the filter has a water-absorbing layer, moisture in fuel is absorbed here—remaining water settles to the bottom of the housing (due to gravity).
Clean Fuel Outlet: Filtered, dry fuel flows out through the outlet port and is sent to the fuel rail (then to injectors) or carburetor (for older models). The built-in pressure relief valve monitors pressure—if it’s too high, excess fuel is diverted back to the tank.
Maintenance Trigger: Over time, impurities build up on the filter element, increasing fuel flow resistance. When resistance reaches a threshold (e.g., 0.3MPa), the engine may show symptoms like slow acceleration—signaling it’s time to replace the filter.
These parameters directly determine the filter’s ability to protect the IX5’s engine and match its fuel system:
Filtration Precision: 10–20 microns (tuned to the IX5’s injector nozzle size—1.5T injectors have smaller nozzles, so 10-micron precision is used; 2.0L uses 20-micron for better flow).
Rated Flow Rate: ≥60L/h (the 1.5T engine’s max fuel consumption is ~15L/100km, so 60L/h easily meets demand—no fuel shortage during full-throttle acceleration).
Working Pressure Range: 0.2–0.8MPa (covers the IX5’s fuel system pressure—1.5T: 0.3–0.5MPa; 2.0L: 0.2–0.4MPa).
Water Absorption Capacity: ≥50ml (enough to handle 6 months of condensation in a 50L fuel tank—common in humid regions).
Working Temperature Range: -30℃ to 120℃ (works in freezing winters in Northeast China and hot summers in South China—no filter paper hardening or seal cracking).
Service Life: 60,000–80,000km (or 2–3 years, whichever comes first). In regions with poor fuel quality (high impurity/moisture), shorten to 40,000–50,000km.
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Summary
Bottom line, the Fuel Filter Assy 1117140F0000A is like a quiet little guardian for the Dongfeng Dignity IX5’s engine. It flies under the radar most of the time—you never really think about it—but if you ignore it, you could end up with some costly fixes. For example, just replacing one fuel injector can cost around 1,000 yuan! But if you stick to replacing it regularly with genuine parts, your IX5’s fuel system will stay clean, and the engine will run reliably for years to come.
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