EE 521 Air Filter

EE-521 High-Capacity Primary Air Filter (Replaces 2474-9051)

Ensure your heavy machinery stays operational in the toughest environments with the EE-521 Primary Air Filter. Designed as a high-performance replacement for Doosan Daewoo part number 2474-9051, this filter is built to handle the high-volume air intake requirements of large excavators and wheel loaders.

By utilizing advanced pleated cellulose media, the EE-521 provides exceptional dust-holding capacity, preventing premature engine wear and maintaining optimal fuel efficiency even on dusty construction and mining sites.

Key Performance Features:

• Maximum Engine Protection: High filtration efficiency captures 99.9% of airborne contaminants before they reach the engine.

• Heavy-Duty Build: Features a reinforced metal end cap and inner/outer liners to withstand high-pressure air intake without collapsing.

• Extended Service Life: Large surface area design allows for longer intervals between cleanings or replacements.

• Precise Axial Seal: Engineered with high-quality gaskets to ensure a perfect airtight seal within the air cleaner housing.

Verified Compatibility & Cross-Reference

The EE-521 is a direct replacement for the Doosan/Daewoo 2474-9051 and is fully compatible with the following industry-leading part numbers:

Primary Equipment Applications

This filter is a critical component for large-scale Doosan Daewoo equipment, including:

• Excavators (Solar Series): Solar 250LC-V, 255LC-V, 290LC-V, 300LC-V, 330LC-V, 340LC-V, 400LC-V, 420LC-V, 450LC-V, and 470LC-V.

• Excavators (DX Series): DX300LC, DX340LC, DX350LC.

• Wheel Loaders (Mega Series): Mega 300-III, Mega 400-III, Mega 500-V.

• Daewoo Novus Trucks: Heavy-duty commercial truck variants.

Technical Specifications

• Filter Type: Primary Round Air Filter (Outer)

• Overall Height: Approx. 493mm – 495mm

• Outer Diameter: 275mm – 277mm1

• Inner Diameter: 165mm – 171mm

• Style: Metal End Cap with axial seal

Note on Safety Filters: In many heavy-duty applications, this primary filter (EE-521) is used in conjunction with a secondary "safety" inner filter (Replaces 2474-9057). For complete engine protection, we recommend replacing both elements at the same time.