Overview
The ZF 6057.018.863 EST 37 A is a critical electro-hydraulic control unit specifically designed for the WG 210 Series transmission. This genuine OEM part functions as the primary shift modulator, managing hydraulic pressure to engage and disengage clutches within the planetary gearset. Positioned directly on the valve body assembly, the EST 37 A ensures precise gear selection and smooth power delivery under heavy-duty operating conditions. The SKU 6057.018.863 is a direct replacement for factory-installed units, guaranteeing exact fitment and original ZF performance standards.
Symptoms of Failure
When the ZF 6057.018.863 EST 37 A begins to degrade, operators often notice delayed or harsh shifting between gears, particularly during acceleration from a stop. Another common indicator is intermittent loss of forward or reverse drive without warning, which can leave equipment stranded. Technicians frequently report erratic solenoid response codes in diagnostic systems, pointing directly to this control unit. Additionally, internal hydraulic pressure fluctuations may cause the transmission to slip under load, reducing torque output and fuel efficiency.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 6057.018.863 |
| OEM Reference | EST 37 A |
| Material | Die-cast aluminum alloy with steel solenoid core |
| Weight | 1.45 kg (3.2 lbs) |
| Operating Voltage | 12V / 24V DC |
| Hydraulic Port Size | M12 x 1.5 |
| Seal Type | Nitrile rubber O-rings (included) |
| Torque Rating | 8-10 Nm (mounting bolts) |
Compatibility
This genuine ZF 6057.018.863 EST 37 A is engineered for the WG 210 Series transmission family. It is also compatible with the WG180, WG200, and WG250 models when used in similar hydraulic control configurations. The unit integrates directly with the 4657101082: TRANSMISSION HOUSING and mounts between the 4657201166: HOUS.FRONT SECT and the 4657201170: HOUSING REAR PART. For complete assembly, the 4657298102: HOUSING REAR SECTION must also be properly aligned to avoid hydraulic cross-leaks.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201170 | HOUSING REAR PART | Rear casing supporting output flange |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO mount |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retainer plate for valve body |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M8 bolt for cover plate |
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