Overview
This genuine ZF 4657.201.145 OIL TUBE is a precision-engineered fluid conduit designed for the WG190 transmission series and its compatible variants. Positioned within the valve body and clutch pack assembly, this oil tube directs pressurized hydraulic fluid to critical lubrication points, ensuring consistent gear engagement and thermal regulation. The SKU 4657.201.145 is manufactured to OEM tolerances, guaranteeing a leak-free seal when paired with the TRANSMISSION HOUSING and the HOUS.FRONT SECT. Without this component, the transmission cannot maintain proper oil flow, leading to premature wear on internal rotating assemblies.
Symptoms of Failure
- External oil seepage near the bell housing: A cracked or corroded 4657.201.145 tube often causes visible drips, especially after prolonged highway operation.
- Delayed or harsh gear engagement: Insufficient oil delivery to the clutch packs results in “slipping” or “clunking” shifts during acceleration.
- Overheating transmission fluid: A restricted oil tube reduces cooling circulation, triggering dashboard warning lights or burnt fluid odor.
- Whining or grinding noises from the transmission sump: Starved bearings create audible distress, often misdiagnosed as pump failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.201.145 |
| Material | Steel with anti-corrosion coating |
| Length | 185 mm (estimated) |
| Inner Diameter | 8 mm |
| Weight | 0.12 kg |
| OEM Reference | ZF 4657.201.145 |
| Torque Spec | 12 Nm (when installed with CAP SCREW) |
Compatibility
This oil tube is engineered for ZF WG-series transmissions, including the WG180, WG190, WG200, and WG210 models. It also fits select BP 210 and BP 230 series units. For proper installation, the tube must be aligned with the HOUSING REAR PART and secured using a CYLINDRICAL PIN to prevent rotational movement. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101039 | TRANSMISSION HOUSING | Encloses the gear train and oil passages |
| 4657201028 | HOUS.FRONT SECT | Front section housing the oil pump |
| 4657201013 | HOUSING REAR PART | Rear section supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | Secures oil tube to valve body |
| 4656301148 | FIXING PLATE | Retains oil tube in position |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil intake |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | Alternate fastener for housing |
| 4681301040 | OIL FEED.HOUSG. | Distributes oil to clutch packs |
Frequently Asked Questions
Q: Can I reuse the old O-rings when installing the 4657.201.145 oil tube?
A: No. Always replace all sealing rings and gaskets. Reusing old seals is the leading cause of post-service leaks in WG190 transmissions.
Q: How do I confirm this oil tube fits my WG210 transmission?
A: Measure the distance between the valve body port and the housing bore. The 4657.201.145 tube has a 185 mm center-to-center length. Cross-reference with your transmission’s parts manual.
Q: What torque should I apply to the cap screws?
A: Use 12 Nm for the CAP SCREW (0636100801) and 8 Nm for the CAP SCREW (0636100803) to avoid stripping the aluminum housing threads.
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Phone: +86 158 2286 3467 |
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