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The BALDWIN FILTERS PA3867 is a heavy-duty automotive air filter designed to protect internal combustion engines from airborne contaminants including dust, debris, and particulate matter. It fits into the intake air system and serves as the primary barrier between ambient air and the engine. Proper air filtration is critical for maintaining fuel efficiency, engine longevity, and combustion performance. At 3.5 pounds, the PA3867 is a robust filter built for demanding service intervals in trucks, construction equipment, and commercial vehicles. Installation is typically performed by diesel mechanics and fleet service technicians as part of a scheduled preventive maintenance routine.
The PA3867 is suited for use in heavy-duty automotive and equipment applications where reliable air filtration is required. It crosses to multiple OEM and aftermarket filter references, making it a practical replacement option across a range of engines and platforms including Caterpillar and Cummins-powered equipment. This filter is commonly serviced during routine air filter replacement intervals in fleet and off-highway equipment maintenance programs.
The PA3867 is a direct cross-reference for the following filters: Caterpillar 3I2126, Cummins 3924540, Donaldson ECB085046, Fleetguard AH19002, Hastings PA3867, and Wix 42326.
Air filter replacement is performed by qualified diesel mechanics or fleet service technicians. Always shut down the engine and allow it to cool before servicing the air intake system. Inspect the air filter housing and sealing surfaces for cracks or debris before installing the new filter, and ensure the filter seats fully to prevent unfiltered air bypass. Dispose of the used filter in accordance with local regulations.
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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