The WF2127 coolant filter (commonly a Fleetguard part) is a spin-on cooling system filter designed for heavy-duty diesel engines, especially in trucks and equipment using Cummins platforms. Built with durable filter media (often StrataPore™), it helps protect critical cooling components like radiators, water pumps, and cylinder liners from buildup and corrosion. This contributes to improved engine efficiency, longer coolant life, and reduced maintenance costs. Specification Details Part Number WF2127 Brand Fleetguard Filter Type Coolant / Water Filter Design Spin-On Chemical Additive None (Non-Charged / No SCA) Thread Size M36 x 2 Overall Height 5.76 in (146.3 mm) Outer Diameter 3.69 – 3.77 in Gasket OD 3.77 in Gasket ID 3.18 in Weight ~1.34 – 1.41 lbs Filtration Type Mechanical (no chemical dosing) Application Heavy-duty diesel engines (Cummins, trucks, equipment) Cross References Cummins 3680434, Baldwin B5087, Donaldson P550585, NAPA 4113
