ZF 6057.018.720 EST 37 A for WG210 | OEM Genuine Part

Overview

The ZF 6057.018.720 EST 37 A is a critical electro-hydraulic control unit specifically designed for the WG 210 Series transmission. This OEM genuine part, identified by SKU 6057.018.720, functions as the primary interface between the transmission control module and the hydraulic valve body. It precisely regulates clutch pressure and shift timing, ensuring smooth gear transitions under heavy load conditions. Mounted directly onto the main TRANSMISSION HOUSING, this unit converts electrical signals into hydraulic commands, making it indispensable for the proper operation of the entire drivetrain assembly.

Symptoms of Failure

• Erratic shifting or gear hunting: When the EST 37 A fails, the transmission may struggle to find the correct gear, especially during uphill climbs or under varying torque loads.
• Delayed engagement from Neutral to Drive: A worn unit often causes a noticeable lag (2-4 seconds) when shifting from park or neutral into a forward gear, a classic sign of hydraulic pressure loss.
• Transmission fluid contamination: Internal seal degradation within the 6057.018.720 can allow debris into the hydraulic circuit, leading to dark, burnt-smelling fluid and reduced lubrication across the HOUS.FRONT SECT.
• Intermittent loss of reverse gear: A failing solenoid or stuck valve within this part often results in a complete loss of reverse function, while forward gears remain operational.

Technical Specifications

Compatibility

This genuine ZF 6057.018.720 EST 37 A is engineered for the WG 210 Series transmission family. It is also compatible with the WG 180 and WG 200 models, provided the transmission housing configuration matches. The unit interfaces directly with the HOUSING REAR PART and the HOUSING REAR SECTION to form a sealed hydraulic circuit. Always verify the revision level of your existing unit before replacement, as later WG 210 variants may require updated firmware calibration.

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