Air Filters

The AP31841K is a heavy-duty spin-on oil filter designed for industrial lubrication circuits, screw air compressors, and diesel engine systems. It removes metal wear particles, carbon deposits, sludge, and fine contaminants from lubricating oil, maintaining oil cleanliness, reducing component wear, and ensuring stable equipment operation under continuous high-load conditions.

Key Features

High-performance semi-synthetic composite filter media with stable 10 μm filtration accuracy and high dirt-holding capacity for long service life.

Built-in anti-drain back valve prevents oil backflow after shutdown and protects equipment from dry-start damage.

Internal bypass valve ensures continuous oil flow during cold start or when the filter becomes clogged.

Reinforced thick steel shell with high pressure resistance, suitable for harsh industrial environments.

Premium nitrile rubber sealing ring provides excellent heat and aging resistance, ensuring leak-free operation.

Standard spin-on design with common thread size for easy installation and direct replacement.

Technical Specifications

Part Number: AP31841K

Type: Spin-on Oil Filter

Outer Diameter: 73 mm

Overall Height: 132 mm