ZF 6057.018.982 EST 37 A for WG171 | OEM Genuine Part

Overview

The ZF 6057.018.982 EST 37 A is a critical electro-hydraulic control unit designed specifically for the WG 171 Series transmission. This OEM genuine part manages the precise modulation of clutch pressure and shift timing, ensuring smooth gear transitions under heavy load conditions. As the brain of the hydraulic control system, the EST 37 A interfaces directly with the transmission’s valve body to regulate oil flow. The SKU 6057.018.982 is a direct replacement unit that restores factory shift quality and prevents driveline damage. For optimal sealing and structural integrity, this component is often installed alongside the 4656101028: TRANSMISSION HOUSING and the 4656301066: HOUS.FRONT SECT to maintain proper alignment.

Symptoms of Failure

• Erratic or delayed gear engagement: When the EST 37 A fails, operators often report a noticeable lag when shifting from neutral to drive or reverse, especially after the transmission has warmed up.
• Harsh or clunking shifts: A worn control unit causes abrupt pressure spikes, leading to jarring upshifts and downshifts that can damage internal components.
• Intermittent loss of forward or reverse gears: Internal solenoid degradation within the 6057.018.982 can cause the transmission to momentarily lose drive power, often triggering a fault code.
• Transmission fluid contamination: Debris from a failing EST 37 A can migrate through the system, clogging the 4656201015: SCREEN SHEET and reducing hydraulic efficiency.

Technical Specifications

Compatibility

This genuine ZF 6057.018.982 EST 37 A is engineered for the WG 171 Series transmission family. It is also compatible with select models in the WG180 and WG200 series that share the same hydraulic control architecture. The unit directly replaces earlier EST 37 variants without requiring adapter plates. When servicing these transmissions, always inspect the 4656301037: TUBE for cracks and verify that the 4656301042: HOUSING REAR PART is free of wear to ensure a complete rebuild.

Related Components

Frequently Asked Questions

Q: How do I know if my ZF WG171 needs a new EST 37 A (6057.018.982)?
A: If you experience delayed engagement, harsh shifts, or a transmission warning light, the EST 37 A is a likely culprit. A diagnostic scan showing solenoid circuit faults confirms the need for replacement.

Q: Can I install the 6057.018.982 without replacing the O-ring and screen sheet?
A: It is strongly recommended to replace the 0634313514: O-RING and 4656201015: SCREEN SHEET simultaneously. Old seals can cause external leaks, and a clogged screen will starve the new unit of clean oil.

Q: Is the ZF 6057.018.982 compatible with the WG180 transmission?
A: Yes, this part is cross-compatible with WG180 and WG200 series transmissions that utilize the same EST 37 hydraulic control architecture. Always verify the housing part numbers, such as the 4656301066: HOUS.FRONT SECT, to confirm fitment.