ZF 4657.201.037 TUBE for WG211 | OEM Genuine Part

Overview

The ZF 4657.201.037 TUBE is a precision-engineered hydraulic conduit designed for the WG 211 series transmission. This OEM genuine part routes pressurized transmission fluid between the valve body and clutch pack assemblies, ensuring consistent lubrication and shift pressure. As a critical component within the transmission’s hydraulic circuit, the tube maintains oil flow integrity under high thermal and mechanical loads. The SKU 4657.201.037 is manufactured to ZF’s exacting tolerances, guaranteeing a leak-free seal when paired with the 4657120005: PRESSURE REGULATOR and 0501211384: VALVE.

Symptoms of Failure

• Transmission fluid leakage at the tube-to-housing interface – Worn or corroded tubing allows pressurized oil to escape, leaving puddles under the vehicle and causing low fluid levels.
• Erratic or delayed gear engagement – A compromised tube disrupts hydraulic pressure delivery, leading to harsh shifts or hesitation when moving from Park to Drive.
• Whining or buzzing noise from the transmission – Restricted oil flow through a damaged tube creates cavitation, producing audible high-pitched sounds during acceleration.
• Overheating transmission fluid – Reduced oil circulation due to a blocked or collapsed tube prevents proper heat dissipation, triggering warning lights or burnt fluid odor.

Technical Specifications

Compatibility

This tube is engineered for the ZF WG 211 series, but it also fits select models in the WG180, WG200, and WG310 families due to shared hydraulic architecture. It is commonly used in off-highway vehicles, construction equipment, and heavy-duty trucks equipped with ZF’s 6-speed powershift transmissions. Always verify fitment with your transmission’s serial number. For complete assembly, this tube works in conjunction with the 0630532183: INDENTED RING and 4656306145: PISTON to maintain proper hydraulic pressure.

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