Overview
The ZF 4657.306.015 DUCT PLATE is a precision-engineered internal component designed specifically for the WG190 and WG210 series transmissions. This OEM genuine part functions as a critical fluid routing element, directing pressurized oil flow to the clutch packs and torque converter within the transmission assembly. Positioned between the valve body and the main housing, the duct plate ensures that hydraulic circuits remain sealed and unobstructed during operation. The SKU 4657.306.015 is manufactured to ZF’s exacting tolerances, guaranteeing a perfect fit and long service life. When installed alongside the 4657101033: TRANSMISSION HOUSING, this duct plate forms a leak-proof interface that maintains consistent line pressure across all gear ranges.
Symptoms of Failure
When the ZF 4657.306.015 DUCT PLATE begins to wear or crack, operators may notice several distinct performance issues. Oil leaks from the transmission housing seam are the most common early indicator, often appearing as drips near the bell housing or oil pan. Delayed or harsh gear engagement occurs when the duct plate fails to maintain proper hydraulic pressure, causing clutches to slip during shifts. Erratic shift timing—where the transmission hesitates or hunts between gears—can also point to a compromised duct plate. Finally, low transmission fluid pressure warnings on the dashboard or diagnostic tool may appear, as the part’s warpage allows oil to bypass critical circuits. Addressing these symptoms promptly with a genuine OEM replacement prevents secondary damage to the 4657201027: HOUS.FRONT SECT and other internal components.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number (SKU) | 4657.306.015 |
| Material | High-strength aluminum alloy with corrosion-resistant coating |
| Overall Dimensions | 210 mm x 85 mm x 12 mm (approx.) |
| Weight | 0.45 kg (1.0 lb) |
| OEM Reference | ZF 4657.306.015 (Genuine) |
| Surface Finish | Anodized, precision-ground sealing faces |
| Operating Temperature Range | -40°C to +150°C |
| Bolt Hole Pattern | 6 x M8 threaded holes, 90 mm spacing |
Compatibility
This duct plate is engineered for the ZF WG190 and WG210 series transmissions, which are commonly found in heavy-duty commercial vehicles, buses, and off-road equipment. Based on the part’s design and mounting configuration, it is also compatible with the following ZF models: WG180, WG200, and WG220 (where hydraulic routing is identical). For proper installation, the duct plate must be paired with the 4657201012: HOUSING REAR PART and secured using the 0631306792: CYLINDRICAL PIN for alignment. Always verify your transmission’s serial number against ZF’s parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing that encloses all internal components |
| 4657201027 | HOUS.FRONT SECT | Front section of the housing, supports input shaft and pump |
| 4657201012 | HOUSING REAR PART | Rear housing section that houses output shaft and governor |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for precise positioning of housing sections |
| 0636100801 | CAP SCREW | Fastener for securing duct plate to housing |
| 4656301148 | FIXING PLATE | Retains duct plate and prevents lateral movement |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil intake circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen for hydraulic return line |
| 0636100803 | CAP SCREW | Alternate fastener for duct plate mounting points |
| 4681301040 | OIL FEED.HOUSG. | Oil feed line housing that connects to duct plate ports |
Frequently Asked Questions
Q: Can I reuse the old gasket when installing the 4657.306.015 duct plate?
A: No. ZF recommends always replacing the gasket and sealing washers when installing a new duct plate. Reusing old seals can lead to oil bypass and pressure loss, compromising transmission performance.
Q: How do I know if my WG210 transmission needs this duct plate?
A: If you observe fluid leaking from the seam between the valve body and main housing, or if diagnostic codes indicate low line pressure, the duct plate should be inspected. Cracks or warpage in the plate require immediate replacement with the OEM 4657.306.015 part.
Q: Is this duct plate interchangeable between WG190 and WG210 models?
A: Yes. The 4657.306.015 is a shared component across both series. However, always verify the bolt pattern and oil port alignment against your specific transmission’s serial number to ensure compatibility.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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