Product Introduction
The 421-5479 hydraulic filter is a cartridge-style replacement filter designed to remove fine particles, metal debris, dust, and other contaminants from hydraulic and transmission oil.
Its high-capacity pleated media provides effective contamination control while maintaining stable oil flow and a low pressure drop. The integrated sealing structure helps prevent contaminated oil from mixing with the filtered fluid. Regular filter replacement protects pumps, valves, cylinders, motors, and other precision hydraulic components from premature wear.
Product Specifications
- Product Type: Hydraulic and transmission oil filter
- Reference Number: 421-5479 / 4215479
- Filter Design: Cartridge element
- Filtration Level: Advanced high efficiency
- Flow Direction: Out-to-in
- Main Material: Polyamide plastic and pleated filter media
- Application: Heavy-equipment hydraulic and transmission systems
Applications
The 421-5479 hydraulic filter is suitable for selected:
- Multi-terrain loaders
- Compact track loaders
- Skid-steer loaders
- Compact wheel loaders
- Wheel loaders
- Track-type tractors
- Construction and earthmoving machinery
- Hydraulic and transmission systems
Typical Application Case
A compact track loader operating in a dusty construction environment showed slower hydraulic response after extended use. During scheduled maintenance, technicians discovered that the old hydraulic filter had accumulated considerable dirt and wear particles.
After installing a compatible 421-5479 hydraulic filter and replacing the contaminated oil, the hydraulic system returned to more stable operation. The new filter helped maintain cleaner oil circulation and improved protection for the pump, valves, and hydraulic motors.
