ZF 6057.018.707 EST 37 A for WG210 | OEM Genuine Part

Overview

The ZF 6057.018.707 EST 37 A for WG210 is a precision-engineered solenoid valve assembly responsible for modulating hydraulic pressure within the transmission control unit. This OEM genuine part, identified by SKU 6057.018.707, directly governs clutch engagement and shift timing in the WG 210 series. It sits within the valve body assembly, translating electronic signals from the transmission control module into precise hydraulic actions. When functioning correctly, it ensures smooth gear transitions and consistent torque delivery. This component is often replaced in conjunction with the 4657101080: TRANSMISSION HOUSING to maintain proper sealing and alignment within the main casing.

Symptoms of Failure

• Erratic shifting or gear hunting: A failing EST 37 A causes the transmission to hesitate or shift harshly between gears, particularly under load.
• Delayed engagement from Park to Drive: Worn internal seals lead to pressure loss, resulting in a noticeable lag when selecting a gear.
• Transmission fluid contamination: Debris from a degraded solenoid can enter the hydraulic circuit, often accompanied by metallic particles in the oil pan.
• Intermittent limp mode activation: The ECU detects abnormal pressure readings from this valve, forcing the transmission into a protective reduced-power state.

Technical Specifications

Compatibility

This solenoid is primarily designed for the ZF WG210 series, but it also cross-fits the WG180, WG200, and WG211 models due to shared valve body architecture. It is a direct replacement for the EST 37 A variant found in off-highway and commercial vehicle transmissions. For complete assembly, ensure the 4657201167: HOUS.FRONT SECT and 4657201171: HOUSING REAR PART are inspected for wear, as misalignment in these sections can accelerate solenoid failure. Additionally, the 4657298103: HOUSING REAR SECTION must be free of cracks to maintain proper fluid routing.

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