Overview
The Baldwin PA2978 is a premium axial seal air filter element designed for heavy-duty mobile and stationary equipment. Baldwin axial seal air filter elements ensure proper equipment function by preventing airborne contaminants from reaching the combustion chamber. This element is engineered for construction, agriculture, marine, mining, oil & gas, and power generation applications where reliable air filtration is critical to engine performance and longevity.
Key Features
- Axial seal design: Prevents contaminant bypass and maximizes filtration efficiency
- Heavy-duty construction: Built to withstand demanding operating environments and high air flow rates
- Industry-standard dimensions: OD: 5 1/2 (139.7), ID: 3 1/8 (79.4), Length: 4 27/32 (123.0)
- Broad compatibility: Fits Benford construction equipment and numerous cross-reference applications
- Proven reliability: Made in the United States by the reputable brand Baldwin
Technical Specifications
- Filter type: Axial seal air element
- Outside diameter: 5 1/2 inches (139.7 mm)
- Inside diameter: 3 1/8 inches (79.4 mm)
- Length: 4 27/32 inches (123.0 mm)
- Weight: 0.508 kg (1.12 lbs)
- Unit quantity: 1
- UPC: 791440023529
Typical Applications
The PA2978 is used across diverse industries including construction equipment (especially Benford units), heavy-duty transportation, agricultural machinery, marine engines, mining operations, and stationary power generation systems. The axial seal design makes it suitable for applications requiring high-efficiency particulate filtration and extended service intervals.
Compatibility & Replacements
Compatible With
- Benford construction equipment
- Heavy-duty engines requiring axial seal air filtration
- Agricultural and forestry equipment with matching housing dimensions
- Industrial mobile equipment (cranes, loaders, compactors)
- Marine and stationary power generation units
Replaces / Drop-In Replacement For
- Gardner L22045 (compatible competitor part number)
- Fleetguard AF4020
- Coopers PD2274E13, PD2658T, and related PD series elements
- WIX WGA142
- Multiple OEM equivalents across construction and marine equipment lines
Works With
- Standard axial seal filter housings with matching bore and length specifications
- Equipment equipped with post-mount or bowl-type air cleaner assemblies
- Engines requiring industrial-grade air element replacements





