EE 809 Air Filter

EE-809 Heavy-Duty Primary Air Filter (Replaces CAT 131-8822)

Maximize the protection of your heavy machinery with the EE-809 High-Efficiency Air Filter. This primary radial-seal filter is specifically designed to meet the rigorous demands of large-scale construction, earthmoving, and paving equipment.

Engineered as a direct replacement for the Caterpillar 131-8822, the EE-809 ensures a consistent, airtight seal and superior dust-holding capacity, even in the most punishing work environments. By delivering cleaner air to your engine, it helps prevent premature wear on internal components and maintains optimal fuel efficiency.

Key Features:

• Radial Seal Technology: One-piece molded urethane end caps provide a high-surface-area seal that resists vibration and prevents dust bypass.

• Premium Filtration Media: High-density pleated cellulose effectively captures 99.9% of airborne contaminants.

• Corrosion-Resistant Housing: Features a rugged outer metal mesh to maintain structural integrity under high-pressure intake.

• Extended Service Intervals: Designed for high-capacity dust holding, reducing machine downtime for maintenance.

Verified Compatibility & Cross-Reference

The EE-809 is a verified equivalent to the following major industry part numbers, covering a wide range of agricultural and industrial brands:

Primary Equipment Applications

This filter is a critical component for a vast array of Caterpillar (CAT) machinery and several other industrial brands:

• Excavators: 320B, 320C, 320D, 320E, 321C, 322B, 323D, 325B (and many variants like L, LN, LRR).1

• Paving Compactors: CP-533D, CP-563E, CS-533D, CS-563D, CS-583E, CS-663E, CS-683E.2

• Wheeled Excavators: M325B.3

• Agricultural: Select John Deere and Agco tractors requiring the RS3736 / AF25589 specification.

Technical Specifications

• Filter Type: Primary Radial Seal Air Filter4

• Overall Height: 342 mm5

• Outer Diameter: 236 mm6

• Inner Diameter: 132 mm

• Efficiency: Standard Efficiency (99.9% Capture Rate)7