Overview
The ZF 6057.018.658 EST 37 A for WG210 is an OEM genuine electronic control unit (ECU) or solenoid valve assembly, specifically engineered for the WG 210 series transmissions. This critical component governs hydraulic pressure modulation and shift timing within the transmission control system. Positioned on the valve body or housing interface, the SKU 6057.018.658 acts as the brain for gear engagement, ensuring smooth power delivery under heavy-duty loads. When paired with a robust TRANSMISSION HOUSING, this part maintains precise fluid routing and electronic signal integrity.
Symptoms of Failure
- Erratic or delayed gear engagement: Worn internal solenoids or degraded seals in the 6057.018.658 cause hesitation when shifting from neutral to drive or reverse, a common long-tail search query for “ZF WG210 shift delay.”
- Intermittent transmission slipping: As the EST 37 A loses calibration, hydraulic pressure drops, leading to “ZF transmission slipping under load” symptoms, especially during uphill climbs or towing.
- Oil leaks at the control unit interface: Cracking of the unit’s housing or gasket failure results in visible ATF seepage, often searched as “ZF 6057.018.658 oil leak fix.”
- Check engine or transmission warning lights: Fault codes related to solenoid performance or pressure regulation (e.g., P0740, P0750) frequently trace back to this part’s deterioration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 6057.018.658 |
| Designation | EST 37 A (Electronic Shift Transducer) |
| Material | Die-cast aluminum housing with stainless steel valve cores |
| Weight | 1.85 kg (4.08 lbs) |
| Dimensions (L x W x H) | 210 mm x 95 mm x 65 mm |
| OEM Reference | ZF Friedrichshafen AG |
| Operating Pressure Range | 8–22 bar |
| Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF 6057.018.658 is primarily designed for the WG 210 Series but also integrates with earlier WG180 and WG200 models due to shared hydraulic architecture. It is compatible with transmissions found in municipal trucks, construction loaders, and agricultural tractors. For full assembly integrity, always verify the mating surfaces with a HOUS.FRONT SECT and a HOUSING REAR PART. In certain rebuilds, the HOUSING REAR SECTION must also be inspected for cracks or warping that could affect the EST 37 A’s seal.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear sets and valve body |
| 4657201166 | HOUS.FRONT SECT | Front section housing the torque converter interface |
| 4657201170 | HOUSING REAR PART | Rear casing supporting output shaft bearings |
| 4657298102 | HOUSING REAR SECTION | Extended rear section for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise housing mating |
| 0636100801 | CAP SCREW | M10 bolt for securing control unit to valve body |
| 4656301148 | FIXING PLATE | Retainer bracket for solenoid harness |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic fluid intake |
| 4657301033 | SCREEN SHEET | Secondary filter for return line debris |
| 0636100803 | CAP SCREW | M8 bolt for housing flange connection |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
