ZF 4661.231.009 TUBE for WG94 | OEM Genuine Part

Overview

The ZF 4661.231.009 TUBE for WG94 is a precision-engineered fluid conduit designed to manage hydraulic oil flow within the valve body assembly of ZF’s WG 94 series transmissions. This OEM genuine part, identified by SKU 4661.231.009, serves as a critical passage for directing pressurized transmission fluid to the clutch packs and shift valves. It sits securely between the TRANSMISSION HOUSING and the HOUSING II, ensuring uninterrupted hydraulic circuitry. Manufactured to ZF’s exacting tolerances, this tube prevents cross-leakage and maintains consistent line pressure for reliable gear engagement in heavy-duty applications.

Symptoms of Failure

• Hydraulic fluid seepage around the valve body: A worn or cracked 4661.231.009 tube often causes visible oil drips near the transmission pan, leading to low fluid levels and potential overheating.
• Delayed or harsh shifting: When this tube degrades, internal pressure drops, resulting in sluggish engagement between gears or abrupt shifts under load.
• Erratic clutch pack operation: Insufficient fluid delivery through a compromised tube can cause clutch slippage, especially during torque converter lockup.
• Transmission warning codes for pressure faults: Modern electronic controls detect pressure inconsistencies, triggering diagnostic trouble codes (DTCs) related to hydraulic circuit integrity.

Technical Specifications

Compatibility

This tube is specifically engineered for the ZF WG 94 series, including models such as WG94, WG180, WG200, and WG210. It is a direct replacement for original equipment in these transmissions, which are commonly found in municipal buses, construction loaders, and medium-duty trucks. Always verify your transmission model number before installation. The part interfaces directly with the CYLINDRICAL PIN for alignment and the TYPE PLATE for identification.

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