Overview
The ZF 6057.018.765 EST 37 A is a precision-engineered electro-hydraulic control unit specifically designed for the WG 210 Series transmission. This OEM genuine part, identified by SKU 6057.018.765, functions as the central command module that regulates clutch pressure and shift timing within the transmission housing. It sits directly atop the main valve body assembly, converting electrical signals from the transmission control unit into precise hydraulic actions. For optimal sealing and alignment, this unit is installed in conjunction with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to ensure proper fluid routing.
Symptoms of Failure
- Erratic or harsh shifting: When the EST 37 A solenoid pack degrades, you may experience delayed engagement or jarring gear changes, especially during low-speed maneuvering.
- Intermittent loss of drive: A failing unit can cause the transmission to suddenly drop into neutral or fail to engage a specific gear under load.
- Transmission fluid contamination: Internal seal wear within the 6057.018.765 allows metallic debris to circulate, often visible as dark, gritty fluid on the dipstick.
- Persistent check engine or transmission warning lights: The control module detects electrical faults in this part, triggering diagnostic trouble codes related to solenoid circuit malfunctions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 6057.018.765 (EST 37 A) |
| Material | High-grade aluminum alloy with corrosion-resistant coating |
| Weight | 2.4 kg (5.3 lbs) |
| Dimensions | 210 mm x 140 mm x 85 mm |
| OEM Reference | ZF WG210 Series |
| Operating Pressure | 12-18 bar (174-261 psi) |
| Seal Type | Nitrile rubber O-rings (included) |
Compatibility
This genuine ZF 6057.018.765 EST 37 A is engineered for the WG 210 transmission series, but it also shares mounting patterns with the WG 180 and WG 200 models when used with the correct HOUSING REAR PART. It is not compatible with older WG 160 or WG 150 variants without significant adapter modifications. For complete assembly, always pair this unit with the HOUSING REAR SECTION to maintain proper solenoid clearance and fluid channel alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for pump and torque converter |
| 4657201170 | HOUSING REAR PART | Rear casing supporting output shaft |
| 4657298102 | HOUSING REAR SECTION | Extended rear section for planetary gear sets |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for solenoid cover plate |
| 4656301148 | FIXING PLATE | Retaining bracket for valve body |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for oil sump |
| 0636100803 | CAP SCREW | Bolt for rear housing attachment |
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