Construction machinery spin-on fuel filter

FF5687 P552200 FF2200 Heavy Duty Spin-On Diesel Fuel Filter The FF5687 fuel filter, cross-referenced with part numbers P552200 and FF2200, is a professional heavy-duty spin-on diesel fuel filter specially designed for Cummins heavy-duty diesel engines used in commercial trucks, excavators, loaders, agricultural equipment and industrial diesel generators. Serving as an essential core component of the engine fuel supply system, it precisely filters incoming diesel before fuel flows into high-pressure fuel pumps and precision fuel injectors. It efficiently captures solid contaminants such as rust particles, sand, carbon residue, sludge and colloidal impurities, greatly reducing abrasive damage to delicate fuel system components. Manufactured strictly under ISO/TS16949 automotive quality management standards, this filter delivers consistent high-efficiency filtration under continuous heavy-load operation, dusty mining sites, extreme high and low temperatures, as well as high-humidity working environments. It is a fully compatible aftermarket OEM replacement part, trusted to stabilize engine power, minimize unexpected downtime, and extend the service life of core engine fuel assemblies for long-haul trucks and engineering machinery worldwide.  Product Material Description: Outer Steel Housing: Thickened high-strength cold-rolled carbon steel shell with electrophoretic anti-rust and anti-corrosion coating. It features outstanding pressure resistance, impact resistance and diesel chemical resistance, which can withstand long-term rated fuel system pressure without expansion, cracking or fuel leakage, providing sturdy full protection for internal filter elements. Multi-Layer Gradient Filter Media: High-density composite wood pulp filter paper treated with reinforced resin, adopting deep pleated folding to maximize effective filtration area. The gradient density structure realizes progressive fine filtration, balancing excellent particle trapping efficiency and stable fuel flow to avoid insufficient oil supply under full engine load. High Temperature NBR Sealing Gasket: Industrial nitrile rubber sealing ring with superb resistance to diesel corrosion, heat and aging. It maintains reliable sealing elasticity within a working temperature range of -35℃ to 130℃, effectively preventing unfiltered fuel bypass and mounting joint leakage. Precision Machined Thread Base: CNC processed solid carbon steel thread base with standard accurate thread size, stable mechanical strength for easy spin-on installation and convenient routine disassembly during maintenance.

SGL-20805349 P502536 Spin-On Diesel Fuel Filter  The SGL-20805349 fuel filter is a premium spin-on replacement element cross referenced with Donaldson P502536, professionally designed for heavy construction machinery, medium & heavy-duty trucks and industrial diesel power units. Constructed with high-density reinforced multi-layer filter media, this filter efficiently traps rust, sediment, dust, sludge and colloidal contaminants contained in diesel fuel, delivering reliable protection for fuel injectors, high-pressure fuel pumps and precision engine components against abrasion, clogging and premature wear. Manufactured strictly to original OEM dimension specifications, it supports direct plug-and-play installation without modification. Featuring steady fuel flow performance, excellent contaminant holding capacity and economical aftermarket pricing, it is a trusted maintenance spare part for machinery repair shops, construction fleet operators and global filter distributors worldwide. Core material and internal structure: Preparation: Shut down the engine completely, close the fuel inlet valve and release residual pressure within the fuel pipeline. Prepare a filter wrench, oil-absorbent rags and a container to catch spilled diesel fuel during removal. Remove old filter: Turn the old filter counterclockwise to unscrew it fully. Clean the filter mounting base thoroughly to wipe off leftover gasket debris, dirt and residual fuel completely. Gasket treatment: Apply a thin coat of clean diesel fuel evenly onto the new rubber sealing gasket. Do not apply grease, which will cause rubber degradation and sealing failure over time. Install new filter: Hand-tighten the SGL-20805349 filter clockwise until the gasket sits flush against the mounting surface, then tighten an additional 3/4 turn using a wrench. Never over-tighten to avoid thread damage and gasket deformation. Leakage inspection: Restore fuel supply and start the engine to idle for 3–5 minutes. Carefully check the connection joint; installation is successful if no fuel leakage is detected. Replacement schedule: Replace regularly during regular highway or standard working conditions. Shorten the replacement cycle appropriately when operating on dusty construction sites, mining areas or using low-quality diesel fuel.