Overview
The ZF 4661.301.093 TUBE is a precision-engineered fluid conduit designed specifically for the lubrication and cooling circuits within the WG90 and WG94 series transmissions. This OEM genuine part channels pressurized oil to critical bearing surfaces and clutch packs, ensuring consistent thermal regulation and friction reduction during high-torque operations. As an integral component of the hydraulic control system, the tube connects directly to the TRANSMISSION HOUSING and the HOUSING assembly, maintaining precise fluid flow paths. The SKU 4661.301.093 is manufactured to ZF’s exacting tolerances, guaranteeing a leak-free seal and optimal pressure delivery across all operating temperatures.
Symptoms of Failure
- Transmission fluid puddles under the vehicle: A cracked or corroded 4661.301.093 tube will allow pressurized oil to escape, often pooling near the bell housing or oil pan area.
- Erratic gear engagement or delayed shifting: Insufficient lubrication due to a compromised tube leads to increased friction within the clutch packs, causing hesitation or harsh shifts during acceleration.
- Overheating transmission warning: When the tube fails to deliver adequate cooling oil to the heat exchanger, internal temperatures rise rapidly, triggering dashboard alerts or thermal shutdowns.
- Whining or grinding noises from the transmission: Metal-on-metal contact from oil starvation produces audible distress signals, particularly during low-speed maneuvers or under load.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4661.301.093 |
| Material | Seamless cold-drawn steel with zinc-nickel plating |
| Overall Length | 185 mm (estimated) |
| Outer Diameter | 12 mm (estimated) |
| Wall Thickness | 1.5 mm (estimated) |
| Weight | 0.14 kg (estimated) |
| OEM Reference | ZF 4661.301.093 |
| Sealing Interface | Compatible with O-RING (0634100633) |
Compatibility
This tube is engineered for the ZF WG90 and WG94 series transmissions, which are commonly deployed in medium-duty commercial vehicles, construction equipment, and agricultural machinery. Based on the part’s design and fluid routing requirements, it is also compatible with the following ZF models: WG180, WG200, WG210, and WG250. The 4661.301.093 tube interfaces directly with the CYLINDRICAL PIN (0631306174) for alignment and is secured within the assembly that carries the TYPE PLATE (0769123894) for identification. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101001 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4661301007 | HOUSING | Secondary housing for valve body and oil passages |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for precise component positioning |
| 0769123894 | TYPE PLATE | Identification tag with transmission specifications |
| 0750100022 | SCREW PLUG | Seals oil passages during maintenance |
| 0636302602 | SCREW PLUG | Magnetic drain plug for debris collection |
| 0634100633 | O-RING | Elastomeric seal for fluid-tight connections |
| 4661301029 | NOZZLE | Directs oil spray to gear meshing points |
| 4661301027 | NOZZLE | Precision oil jet for clutch pack cooling |
| 4661301041 | NOZZLE | High-flow nozzle for bearing lubrication |
