EE 525 Air Filter

EE-525 Heavy-Duty Air Filter (Replaces 17801-78020)

Maximize your engine’s power and efficiency with the EE-525 High-Performance Air Filter. Designed specifically for heavy-use commercial vehicles and light trucks, this filter serves as the primary line of defense against dust, soot, and abrasive particles that can lead to engine wear and increased fuel consumption.

The EE-525 is engineered to meet or exceed the performance standards of the Toyota Dyna and Hino Dutro series. Featuring high-grade pleated media and a precision-molded soft PU end cap, it ensures a perfect airtight seal within the air box, even under extreme vibration and temperature fluctuations.

Key Performance Features:

• High Dust Holding Capacity: Multi-layered filtration media extends service life and maintains consistent airflow.

• Optimal Airflow Efficiency: Low initial resistance allows the engine to breathe easier, improving throttle response and fuel economy.

• Superior Structural Integrity: Built with a reinforced mesh and durable PU seals to prevent "bypassing" of unfiltered air.

• Precision Fit: Engineered to the exact dimensions of the 17801-78020 OEM design for quick, drop-in replacement.

Verified Compatibility & Cross-Reference

The EE-525 is a direct replacement for the Toyota/Hino 17801-78020 part number and is cross-compatible with several industry-leading brands.

Primary Vehicle Applications

This air filter is commonly found in a wide range of Asian-manufactured trucks and commercial buses:

• Toyota Dyna: 150, 200, 250, 300, and 400 series (XZU, XKU, BZU models).

• Hino Dutro: 300 series (Wide and Narrow Cab configurations).

• Toyota ToyoAce: Various truck models (2000–present).

• Daihatsu Delta: V116 and V118 series (1999–2003).1

• Wiesmann: Select commercial applications.

Technical Specifications

• Filter Type: Air Filter Insert (Primary)

• Outer Diameter: 237mm

• Inner Diameter: 132mm2

• Height (Total): 263mm3

• Seal Material: Soft Polyurethane (PU)

Pro Tip: In heavy-duty or dusty environments, the air filter is the most important component for preventing "duster" engine failure. We recommend inspecting the EE-525 every 5,000 km and replacing it every 15,000 km or sooner if the filter indicator light activates.