Overview
This OEM genuine ZF 4108.012.087 P 3200 is a critical hydraulic control valve assembly designed for heavy-duty powershift transmissions. Positioned within the valve body housing, it modulates clutch pressure and directs oil flow to specific gear sets during shifting operations. As a direct replacement for the original factory component, the SKU 4108.012.087 ensures precise hydraulic timing and prevents cross-contamination between circuits. This part is engineered to withstand high thermal loads and continuous operation in construction machinery, such as wheel loaders and dozers, where consistent power delivery is non-negotiable.
Symptoms of Failure
When the ZF 4108.012.087 valve assembly begins to degrade, operators typically notice these four distinct failure modes:
- Erratic gear engagement or delayed shifts – The transmission hesitates or slams into gear, especially when cold, due to internal spool wear or spring fatigue.
- Internal hydraulic leakage causing oil starvation – Worn seals or bore scoring allow pressurized oil to bypass, leading to clutch pack burnishing and reduced torque capacity.
- Persistent transmission overheating – A stuck or partially closed valve forces the torque converter to operate in a constant stall condition, raising sump temperatures above 120°C.
- Intermittent loss of forward or reverse – The valve fails to maintain holding pressure in a specific clutch circuit, causing the machine to creep or stop responding to directional commands.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4108.012.087 |
| ZF Series Designation | P 3200 |
| Material | High-tensile aluminum alloy with hardened steel spools |
| Overall Dimensions (L x W x H) | 245 mm x 120 mm x 85 mm |
| Dry Weight | 3.8 kg (8.4 lbs) |
| Operating Pressure Range | 12–18 bar (174–261 psi) |
| Seal Type | Nitrile rubber (NBR) with PTFE backup rings |
| OEM Reference | ZF 4108.012.087 (Genuine) |
Compatibility
This genuine ZF 4108.012.087 valve assembly is engineered for the following transmission families. Always verify your transmission serial number before ordering.
- ZF WG180 – Used in mid-size wheel loaders (e.g., 3–5 ton class) and telescopic handlers.
- ZF WG200 – Common in larger articulated dump trucks and graders requiring higher torque capacity.
- ZF 4WG-200 – A four-speed variant found in compact excavators and agricultural tractors with powershift functionality.
- ZF 6WG-250 – Heavy-duty six-speed units in mining loaders and quarry equipment (limited cross-compatibility; confirm valve bore dimensions).
For applications outside these models, consult the ZF parts catalog to confirm that the P 3200 designation matches your transmission’s hydraulic schematic.
