ZF 6073.015.159 EST 37 A for WG210 | OEM Genuine Part

Overview

The ZF 6073.015.159 EST 37 A is a critical electro-hydraulic control unit specifically designed for the WG 210 Series transmission. This OEM genuine part governs the precise modulation of clutch pressure and shift timing, ensuring seamless gear engagement under heavy-duty loads. Located within the valve body assembly, the SKU 6073.015.159 interfaces directly with the TRANSMISSION HOUSING to regulate hydraulic flow. As a direct replacement, it restores factory-specified shift quality and prevents driveline damage caused by erratic pressure spikes.

Symptoms of Failure

• Delayed or harsh shifting under load: A worn EST 37 A solenoid causes sluggish engagement between gears, particularly when towing or climbing grades.
• Intermittent transmission slippage: The unit fails to maintain consistent hydraulic pressure, leading to momentary loss of torque transfer in the WG210.
• Erratic neutral-to-drive engagement: Operators report a noticeable “clunk” or hesitation when shifting from park to drive, indicating degraded internal spool valve response.
• Transmission overheating: Continuous pressure regulation failure forces the torque converter to work harder, elevating fluid temperatures beyond normal operating ranges.

Technical Specifications

Compatibility

This EST 37 A solenoid is engineered for the ZF WG 210 Series, but it also fits the WG180, WG200, and WG211 variants when used with the correct HOUS.FRONT SECT adapter plate. It is not compatible with the Ecomat series without modification. For installations requiring a full housing overhaul, pair this unit with the HOUSING REAR PART and HOUSING REAR SECTION to ensure correct alignment of the hydraulic circuits.

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