Donaldson P536941 Air Safety Filter RadialSeal 3.32 in. OD

The Donaldson P536941 is a RadialSeal Safety Air Filter designed to provide critical secondary protection for heavy-duty engine air intake systems. Tested to ISO 5011 efficiency standards, this filter is engineered for demanding on- and off-road applications including construction, agricultural, and industrial equipment.

Safety air filters serve a dual purpose within the air intake system. They act as a last line of defense against contaminants reaching the engine in the event of primary filter damage or improper installation, and they protect the engine during primary filter service intervals. If contamination bypasses the primary filter, the P536941 is designed to plug rapidly, triggering a restriction indicator and alerting the operator to a system issue before engine damage can occur.

Key Features:

• RadialSeal design for a secure, leak-free seal in the air cleaner housing
• Acts as a backup filter in the event of primary filter failure or improper installation
• Protects the engine intake during primary filter servicing
• Plugs rapidly if contamination bypasses the primary element, alerting operators
• Tested to ISO 5011 efficiency standards
• Dimensions: 3.32 in. OD × 2.55 in. ID × 14.65 in. Length

Service Interval: Replace with every third primary filter change, or immediately following any primary filter failure event.

Cross-Reference Part Numbers: Baldwin RS3709, Caterpillar 3I2144, Fleetguard AF25521, Fram CA9874SY, Wix 46663 / 546663, Napa 6663, Case/Case IH 128782A1, Mann & Hummel CF99, Luber-Finer LAF8405, Hastings AF2282, Carquest 88663, and more.