ZF 4642.138.004 FILTER for WG 150 | OEM Genuine Part

Overview

The ZF 4642.138.004 FILTER for WG 150 is a critical hydraulic filtration component engineered to maintain fluid cleanliness within the transmission’s lubrication and control circuits. Positioned in the sump or return line of the WG 150 series, this OEM genuine part captures particulate contaminants before they can damage precision valves, clutch packs, or bearings. The SKU 4642.138.004 is specifically designed for the WG 150 gearbox, ensuring a precise fit and optimal flow characteristics. When paired with a robust TRANSMISSION HOUSING (4642101109) or TRANSMISSION HOUSING (4642301205), this filter guarantees consistent hydraulic pressure and extends service intervals.

Symptoms of Failure

• Erratic gear engagement or slipping: A clogged filter restricts oil flow, causing delayed or harsh shifts, especially under load.
• Overheating transmission fluid: Contaminants bypassing a degraded filter increase internal friction, raising operating temperatures beyond safe limits.
• Whining or humming noises from the sump: Starvation of the oil pump due to a blocked filter creates cavitation, audible as a high-pitched whine.
• Visible debris in the oil pan: If the filter media tears, metallic or friction material particles appear in drained fluid, indicating imminent component wear.

Technical Specifications

Compatibility

This filter is primarily engineered for the ZF WG 150 series transmissions. Based on its design and hydraulic flow requirements, it is also compatible with the WG 180 and WG 200 models when used in similar sump configurations. Always verify the housing depth and port alignment; the TYPE PLATE (0730365125) on your transmission provides the exact model variant. For secure mounting, the GROOVED STUD (0631311009) is often used alongside this filter to anchor the cover plate.

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