ZF 6073.015.361 EST 37 A for WG211 | OEM Genuine Part

Overview

This OEM genuine ZF 6073.015.361 EST 37 A is a critical electro-hydraulic control unit designed specifically for the WG 211 series transmission. It governs the precise modulation of clutch pressure and shift timing, ensuring smooth gear transitions under heavy load conditions. The SKU 6073.015.361 interfaces directly with the main valve body and receives signals from the transmission control module to regulate hydraulic flow. When functioning correctly, it maintains consistent line pressure and prevents torque converter lockup shudder. This part is often replaced in conjunction with the TRANSMISSION HOUSING to ensure proper alignment of the hydraulic circuits.

Symptoms of Failure

• Erratic shift quality and harsh engagement: A worn EST 37 A solenoid causes delayed or abrupt gear changes, particularly when the transmission is cold. This is a common long-tail search query for “ZF WG211 hard shifting fix.”
• Intermittent loss of drive in forward gears: Internal leakage within the unit leads to pressure drops, resulting in the transmission slipping out of gear under acceleration. Technicians often search for “ZF 6073.015.361 slipping symptoms.”
• Transmission fluid contamination from solenoid debris: Degraded internal seals or coil failure can introduce metallic particles into the hydraulic system, accelerating wear on the HOUS.FRONT SECT and valve body.
• Persistent diagnostic trouble codes (DTCs) for pressure control: The ECU logs codes related to solenoid circuit malfunction or pressure regulation faults, often requiring replacement of this specific OEM part to clear the error.

Technical Specifications

Compatibility

This solenoid module is engineered for the ZF WG 211 series, but it also cross-fits select WG180 and WG200 variants that share the same hydraulic control architecture. It is directly compatible with WG211, WG211A, and WG211B models produced after 2015. For older WG200 transmissions, verify the valve body casting number; units with a HOUSING REAR PART stamped “EST 37” will accept this part. Always inspect the CYLINDRICAL PIN alignment during installation to prevent cross-threading.

Related Components

Frequently Asked Questions

Q: Can I install this EST 37 A solenoid without replacing the housing gaskets?
A: It is strongly recommended to replace the TRANSMISSION HOUSING seal and the CYLINDRICAL PIN during service. Reusing old seals often leads to cross-leakage and erratic pressure readings.

Q: How do I verify that my WG211 transmission uses this exact SKU 6073.015.361?
A: Locate the identification tag on the HOUS.FRONT SECT. If the model code includes “EST 37 A” and the solenoid connector is a 4-pin rectangular type, this part is compatible.

Q: What torque specification should I use for the cap screws when mounting this solenoid?
A: Use 12 Nm (106 in-lbs) for the CAP SCREW (M10x30) and 8 Nm (71 in-lbs) for the CAP SCREW (M8x25) to avoid stripping the aluminum threads in the HOUSING REAR PART.