Overview
The ZF 6073.015.416 EST 37 A for WG210 is a critical electro-hydraulic control unit designed to manage shift timing and pressure modulation within the WG 210 series transmission. This OEM genuine part, identified by SKU 6073.015.416, sits directly on the valve body assembly and interfaces with the main housing to regulate clutch and brake application. It ensures precise gear engagement under varying load conditions, making it indispensable for heavy-duty commercial vehicles. When paired with the TRANSMISSION HOUSING, this component forms the core of the hydraulic control network.
Symptoms of Failure
- Erratic or delayed gear engagement: Worn solenoids or internal seals in the EST 37 A cause hesitation when shifting from neutral to drive, a common complaint in WG210 transmissions.
- Intermittent oil leaks at the valve body interface: Degraded O-rings on the 6073.015.416 unit lead to fluid seepage, often mistaken for housing cracks.
- Harsh or slipping shifts under load: Failed pressure regulation results in clutch pack chatter or momentary loss of torque during uphill climbs.
- Transmission fault codes for solenoid circuit: Electrical degradation triggers diagnostic trouble codes (e.g., P0753) that require replacement of this specific control module.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6073.015.416 |
| OEM Reference | EST 37 A |
| Material | Die-cast aluminum with stainless steel spool |
| Weight | 1.85 kg (4.08 lbs) |
| Dimensions (L x W x H) | 210 mm x 95 mm x 65 mm |
| Operating Pressure | 12–18 bar |
| Seal Type | Nitrile rubber (NBR) |
Compatibility
This genuine ZF part is engineered primarily for the WG 210 series, but it also fits the WG180, WG200, and WG211 transmissions due to shared valve body architecture. It is not compatible with older WG120 or WG150 models without adapter kits. For full assembly integrity, always install the 6073.015.416 alongside the HOUS.FRONT SECT and the HOUSING REAR PART to maintain correct fluid routing. The HOUSING REAR SECTION also shares mounting points with this control unit in later production runs.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Encloses gear train and valve body |
| 4657201166 | HOUS.FRONT SECT | Front section of main housing |
| 4657201168 | HOUSING REAR PART | Rear housing for output shaft |
| 4657298101 | HOUSING REAR SECTION | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for valve body |
| 0636100801 | CAP SCREW | M8 fastener for housing bolts |
| 4656301148 | FIXING PLATE | Secures solenoid harness |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil sump |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M10 fastener for valve body |
Frequently Asked Questions
Q: Can the 6073.015.416 be repaired, or must it be replaced?
A: This unit is a sealed assembly; internal solenoid or valve wear requires full replacement. Attempting to disassemble it often damages the aluminum housing.
Q: Does this part require reprogramming after installation?
A: No. The EST 37 A is a passive hydraulic controller. It does not store software, so it is plug-and-play after proper bleeding of the hydraulic circuit.
Q: What torque is recommended for the mounting bolts?
A: Use 25 Nm for the M8 cap screws (part 0636100801) and 45 Nm for the M10 cap screws (part 0636100803) when securing this unit to the housing.
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