SGL-2001801 FG100-1105140A Spin-On Diesel Fuel Filter SGL-2001801 fuel filter corresponds to OEM part number FG100-1105140A, a professional spin-on fuel filter designed for mainstream light-duty diesel engines widely installed on light commercial trucks, agricultural machinery and small stationary diesel equipment. Adopting premium multi-layer reinforced cellulose filter media, this filter can effectively trap rust particles, dust, sediment, sludge and colloidal contaminants mixed in diesel fuel, offering comprehensive protection for fuel injectors, fuel pumps and precision engine internal components against abrasion, blockage and premature damage. Manufactured strictly following original OEM dimensional standards, it supports direct plug-and-play installation without any cutting or modification. Featuring stable fuel flow performance, strong pollutant holding capacity and favorable aftermarket cost, it serves as an ideal daily maintenance spare part for vehicle repair workshops, small fleet operators and global filter wholesale suppliers.
Core material and internal structure:
Preparation: Turn off the vehicle engine completely, close the fuel inlet valve and release residual pressure inside the fuel pipeline. Prepare a filter wrench, absorbent rags and a waste fuel container to collect spilled diesel during disassembly.
Remove old filter: Rotate the old fuel filter counterclockwise to unscrew it fully. Thoroughly wipe the filter mounting base to completely clear old gasket residue, dirt and residual oil stains.
Gasket preparation: Apply a thin layer of clean diesel evenly on the new rubber sealing gasket. Never use grease, which will lead to rubber swelling, aging and subsequent sealing failure.
Install the new filter: Tighten SGL-2001801 clockwise by hand until the gasket closely fits the base surface, then turn an extra 3/4 turn with a wrench. Do not over-tighten to avoid thread cracking and gasket deformation that causes leakage.
Leakage inspection: Restore fuel supply and start the engine for 3 to 5 minutes of idling operation. Carefully check the connecting joint. Successful installation is confirmed when no fuel leakage is found.
Standard replacement cycle: Replace the filter regularly under normal highway driving conditions. Shorten the replacement interval appropriately when working in dusty construction sites, farmland environments or when using low-grade diesel fuel.
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