ZF 4661.231.005 TUBE for WG94 | OEM Genuine Part

Overview

The ZF 4661.231.005 TUBE for WG94 is a precision-engineered hydraulic fluid conduit designed to maintain consistent oil pressure and lubrication within the transmission assembly. Positioned as a critical component in the valve body circuit, this OEM genuine part ensures seamless fluid transfer between the main control system and the clutch packs. The SKU 4661.231.005 is manufactured to ZF’s exacting tolerances, making it essential for maintaining shift quality and thermal regulation in heavy-duty WG94 series transmissions. When replacing this tube, technicians often inspect the adjacent 4656183200 LOOSE PARTS kit and the 6073003011 CONTROL UNIT to ensure complete system integrity.

Symptoms of Failure

• Hydraulic fluid seepage around the transmission casing: A worn or cracked 4661.231.005 tube often produces slow, persistent oil leaks that leave residue on the bell housing or undercarriage.
• Erratic or delayed gear engagement: When the tube loses internal pressure due to micro-fractures, operators may notice hesitation when shifting from neutral to drive or reverse.
• Overheating transmission fluid: Restricted flow through a damaged tube can cause localized hot spots, triggering warning lights or burnt fluid odors.
• Audible whining or hissing from the transmission: Air ingress through a compromised tube creates cavitation noise, especially under load during low-speed maneuvers.

Technical Specifications

Compatibility

This tube is specifically designed for the ZF WG94 series, including models such as WG94, WG180, WG200, and WG210. It is also compatible with select ZF Ecomat 4HP and 5HP variants that share the same hydraulic circuit architecture. Always verify the 4661101033 HOUSING and 4661301096 HOUSING part numbers to confirm fitment for your specific transmission revision.

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