No. 25967-82001 Forklift Parts Hydraulic Oil Filter 0812A of Forklift

Forklift Hydraulic Oil Filter 0812A — OEM 25967-82001 Return Line Element

The 0812A hydraulic oil filter (OEM 25967-82001) is a return-line filter element commonly used in TCM, Komatsu, and Nissan forklift hydraulic systems. The element uses a resin-impregnated cellulose media with a nominal 10-micron rating, providing the ISO 4406 cleanliness level of 18/16/13 required for reliable directional control valve operation in 1-5 ton forklift hydraulic circuits. The 0812A designation indicates the element dimensions: approximately 80mm outer diameter and 120mm overall length — a size class shared across multiple Japanese forklift manufacturers. The end cap uses a Buna-N O-ring seal with a Shore A hardness of 70, which provides the optimal compression set resistance for hydraulic oil temperatures ranging from -20°C to 100°C.

When replacing the 0812A element, the filter housing must be thoroughly cleaned before inserting the new element — residual sludge in the bottom of the housing will immediately contaminate the new element’s clean side during installation, defeating the purpose of the filter change. Use lint-free rags only; paper towels or shop rags leave fibers that can clog hydraulic valve pilot orifices as small as 0.3mm. Apply a thin film of clean hydraulic oil to the new O-ring before inserting the element into the housing. The housing cover bolts should be tightened to 20-25 N·m in a diagonal pattern — over-tightening will warp the cover and create an external leak path. After installation, run the hydraulic system at idle and cycle all functions through their full range 3-4 times before checking for leaks. Common failure symptoms: hydraulic pump making a “growling” noise at startup (restricted return filter causing backpressure on the pump case drain), intermittent jerky lift motion (contaminated oil causing spool sticking), and hydraulic oil appearing dark or smelling burnt (extended bypass operation due to clogged element).

This 0812A filter fits TCM, Komatsu, and Nissan forklifts using the standard Japanese hydraulic filter housing with the 80mm×120mm element form factor. Verify OEM number 25967-82001 on your existing filter tag. For related filtration products, visit our Forklift Hydraulic Components section.

Technical Specifications

• Part Numbers: 0812A, 25967-82001
• Filter Type: Return-Line Hydraulic Element
• Filtration Rating: 10 Microns (Nominal)
• Element Dimensions: ~80mm OD × 120mm Length
• Seal Type: Buna-N O-Ring, Shore A 70
• Application: TCM, Komatsu, Nissan Forklifts 1-5T

Compatible Forklift Brands

Each filter is individually packed and ships within 1-2 business days. 12-month warranty. Browse our Forklift Maintenance Parts catalog.