Overview
The ZF 6057.018.764 EST 37 A for WG210 is a precision-engineered solenoid valve assembly that governs hydraulic pressure modulation within the transmission control unit. This OEM genuine part, identified by SKU 6057.018.764, sits directly on the valve body and regulates clutch engagement and shift timing in the WG210 series. By converting electrical signals from the transmission control module into precise hydraulic actions, this component ensures smooth gear transitions and consistent torque delivery. It works in concert with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to maintain structural integrity and fluid routing.
Symptoms of Failure
- Erratic shift timing or delayed engagement — When the EST 37 A solenoid wears, hydraulic pressure fluctuates, causing harsh or delayed gear changes. This is a common “ZF transmission shift hesitation” issue.
- Transmission fluid leaks near the valve body — Degraded O-rings or internal seal failure in the 6057.018.764 unit can lead to visible oil seepage, often misdiagnosed as a housing crack.
- Intermittent loss of drive in forward gears — A failing solenoid may cause temporary pressure drops, resulting in “WG210 transmission slipping” symptoms under load.
- Check engine light with shift solenoid codes — Diagnostic trouble codes P0740 or P0750 frequently trace back to this specific part, especially when paired with a worn HOUSING REAR PART.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6057.018.764 |
| OEM Reference | EST 37 A (ZF designation) |
| Material | Hardened steel body with brass plunger |
| Weight | 0.42 kg (0.93 lbs) |
| Operating Pressure | 8–22 bar |
| Coil Resistance | 5.2 ± 0.3 ohms at 20°C |
| Thread Size | M12 x 1.5 |
| Seal Type | Viton O-ring (included) |
Compatibility
This solenoid is engineered primarily for the ZF WG210 series, but it also fits the WG180, WG200, and WG250 models when used with the correct valve body adapter. It is not compatible with the older WG150 series without modification. For proper installation, ensure the HOUSING REAR SECTION is free of debris and the mating surfaces are clean. Always replace the solenoid as a set with the associated screen sheets and fixing plates for optimal performance.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657201166 | HOUS.FRONT SECT | Front section of transmission housing |
| 4657201168 | HOUSING REAR PART | Rear housing segment for output shaft |
| 4657298101 | HOUSING REAR SECTION | Extended rear housing cover |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for valve body retention |
| 4656301148 | FIXING PLATE | Secures solenoid to valve body |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4657301033 | SCREEN SHEET | Secondary filter screen for solenoid port |
| 0636100803 | CAP SCREW | M8 cap screw for housing flange |
Frequently Asked Questions
Q: Can the 6057.018.764 be tested before installation?
A: Yes. Measure coil resistance between pins 1 and 2; it should read 5.2 ohms. Also apply 12V DC briefly to hear a distinct click from the plunger. Do not apply continuous power for more than 2 seconds.
Q: Does this part require recalibration after replacement?
A: In most WG210 applications, the transmission control module will adapt automatically after 20–30 drive cycles. However, for optimal shift quality, perform a solenoid adaptation reset using a ZF diagnostic tool.
Q: What is the typical lifespan of the EST 37 A solenoid?
A: Under normal operating conditions (fluid changes every 60,000 km), this solenoid lasts 150,000–200,000 km. Contaminated fluid or worn screen sheets like the SCREEN SHEET can reduce lifespan significantly.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
