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The BALDWIN FILTERS RS3920 is a radial air filter element designed to remove airborne dirt and contaminants from the intake air stream of heavy-duty equipment. With an outside diameter of 5.969 inches and an overall length of 14.125 inches, this element fits demanding service applications where consistent filtration performance is critical. The end caps are formed using a urethane compound molding process, which creates a reliable seal and helps prevent bypass leakage. Installation and service are straightforward, making it a practical choice for fleet maintenance operations and equipment service shops.
This air filter element is intended for heavy-duty equipment applications where engine air intake protection is essential. It serves as a direct replacement for several OEM and aftermarket part numbers across major equipment lines, making it a versatile stocking part for shops that service mixed fleets. The radial design and urethane-molded ends are suited to the high-vibration, high-debris environments typical of construction, agricultural, and industrial equipment service.
The RS3920 is a direct replacement for Case 87574362, Caterpillar 4287984, Donaldson P778989, Fram CA9003, Hastings AF2382, and Wix 546836.
Air filter element replacement is typically performed by a diesel technician or equipment service professional during scheduled maintenance intervals. Before servicing, shut down the engine and allow the system to depressurize. Inspect the filter housing and sealing surfaces for damage or debris before installing the new element. Ensure the urethane end caps seat fully and evenly in the housing to prevent air bypass.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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