Overview
The ZF 4660.231.017 OIL TUBE is a precision-engineered fluid delivery component designed exclusively for the WG 98 Series transmission. This OEM genuine part channels pressurized hydraulic oil from the valve body to critical lubrication points within the rotating clutch assemblies and planetary gear sets. Positioned internally along the main shaft, the SKU 4660.231.017 ensures consistent oil flow to prevent overheating and component wear. Without this tube, the transmission cannot maintain proper hydraulic pressure, leading to immediate operational degradation.
Symptoms of Failure
- Oil leaks around the transmission housing: A cracked or corroded oil tube will drip transmission fluid externally, often pooling near the bell housing or under the vehicle. Search for “ZF WG98 oil leak from tube” to identify this issue.
- Gear slipping under load: When the oil tube fails to deliver adequate pressure, clutches fail to engage fully, causing the transmission to slip between gears, especially during uphill driving or heavy towing.
- Delayed engagement or harsh shifting: Reduced oil flow results in slow clutch pack fill times, producing a noticeable lag when shifting from Park to Drive or Reverse, followed by abrupt engagement.
- Overheating transmission fluid: Insufficient lubrication from a blocked or broken oil tube causes localized hot spots, triggering warning lights or burnt-smelling fluid.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4660.231.017 |
| Material | Seamless steel with anti-corrosion coating |
| Length | 215 mm (estimated) |
| Outer Diameter | 12 mm |
| Wall Thickness | 1.5 mm |
| Weight | 0.18 kg |
| OEM Reference | ZF 4660.231.017 |
| Thread Type | M10 x 1.0 (both ends) |
Compatibility
This oil tube is primarily designed for the ZF WG 98 Series transmissions, including models such as WG180, WG200, and WG210. It also fits select variants of the WG 120 and WG 150 series used in medium-duty trucks and construction equipment. Always verify your transmission model number before installation. The tube interfaces directly with the 4660101020 TRANSMISSION HOUSING and the 4660301056 HOUSING II, requiring precise alignment to avoid stress fractures. Secure it using the 0631306174 CYLINDRICAL PIN for correct positioning, and reference the 0769123894 TYPE PLATE for torque specifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101020 | TRANSMISSION HOUSING | Main structural casing that encloses all internal components |
| 4660301056 | HOUSING II | Secondary housing for valve body and oil pump assembly |
| 0631306174 | CYLINDRICAL PIN | Alignment pin for precise tube and housing positioning |
| 0769123894 | TYPE PLATE | Identification plate with model and serial number |
| 0750100022 | SCREW PLUG | Seals oil passages during maintenance or storage |
| 4660221031 | SUCTION TUBE | Draws oil from the pan to the pump inlet |
| 0634100317 | O-RING | Seals tube connections to prevent fluid leaks |
| 0636103273 | CAP SCREW | Fastens the tube bracket to the housing |
| 0634306311 | O-RING | Secondary seal for high-pressure oil ports |
| 4660321029 | FIXING PLATE | Retains the oil tube in its designated channel |
