Overview
The ZF 4657.302.011 OIL FEEDER is a critical fluid distribution component engineered specifically for the WG 210 Series transmission. This genuine OEM part ensures precise oil delivery to the planetary gear sets and clutch packs, maintaining proper lubrication and hydraulic pressure during operation. Positioned within the main valve body assembly, the oil feeder acts as a metering channel that directs transmission fluid from the pump to rotating components. The SKU 4657.302.011 is manufactured to ZF’s exacting tolerances, guaranteeing a leak-free seal and consistent flow rates. When installed alongside the TRANSMISSION HOUSING and the HOUS.FRONT SECT, this feeder creates an uninterrupted oil circuit essential for heavy-duty torque management.
Symptoms of Failure
When the 4657.302.011 oil feeder degrades, operators typically encounter these specific failure modes:
- Intermittent gear slipping under load – A worn feeder cannot maintain adequate clutch pack pressure, causing the transmission to slip during uphill climbs or when towing.
- Low transmission fluid pressure warnings – Cracks or erosion in the feeder body allow fluid to bypass, triggering dash indicators and reducing shift quality.
- Oil leaks at the housing interface – The feeder’s sealing surface deteriorates, leading to visible drips around the HOUSING REAR PART joint.
- Delayed engagement from Park to Drive – Insufficient oil volume reaching the forward clutch results in a 2-3 second hesitation before the gear engages.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4657.302.011 |
| Material | Hardened aluminum alloy with anodized coating |
| Overall Length | 142 mm (5.59 in) |
| Outer Diameter | 28 mm (1.10 in) |
| Weight | 0.18 kg (0.40 lbs) |
| OEM Reference | ZF 4657.302.011 |
| Seal Type | Integrated O-ring groove (O-ring sold separately) |
| Operating Pressure | 12–18 bar (174–261 psi) |
Compatibility
This genuine ZF 4657.302.011 oil feeder is designed primarily for the WG 210 Series transmissions. Based on its physical dimensions and port configuration, it is also compatible with the following ZF models: WG 180, WG 200, and WG 211. The feeder interfaces directly with the CYLINDRICAL PIN that aligns the valve body to the housing. For installations in WG 180 or WG 200 units, verify that the TRANSMISSION HOUSING has the corresponding oil gallery port. This part is not backward-compatible with the older WG 150 series due to different bore spacing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101047 | TRANSMISSION HOUSING | Main structural casing that encloses all gear sets and valve bodies |
| 4657201027 | HOUS.FRONT SECT | Front section housing that supports the torque converter and oil pump |
| 4657201020 | HOUSING REAR PART | Rear housing section that contains the output shaft and speed sensors |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for precise positioning of the oil feeder and valve body |
| 0636100801 | CAP SCREW | M8 fastener securing the oil feeder to the housing |
| 4656301148 | FIXING PLATE | Retaining plate that locks the oil feeder in position |
| 4657301032 | SCREEN SHEET | Fine mesh filter protecting the oil feeder inlet from debris |
| 4657301033 | SCREEN SHEET | Secondary coarse filter for the return oil circuit |
| 0636100803 | CAP SCREW | M10 bolt for mounting the fixing plate to the housing |
| 0750301003 | OIL FEED.HOUSG. | External oil feed housing that connects the cooler lines to the feeder |
Frequently Asked Questions
Q: How do I know if the 4657.302.011 oil feeder is the cause of low pressure?
A: Perform a pressure tap test at the main line port. If pressure drops below 12 bar when the transmission reaches operating temperature, inspect the feeder for scoring or cracks. A visual check of the O-ring groove for deformation is also recommended.
Q: Can I reuse the old CYLINDRICAL PIN (0631306792) when replacing the oil feeder?
A: ZF recommends always installing a new CYLINDRICAL PIN during feeder replacement. The pin can become work-hardened or burred, which compromises alignment accuracy and may cause premature wear on the new feeder.
Q: Is this oil feeder compatible with aftermarket transmission housings?
A: The 4657.302.011 is machined to OEM ZF tolerances. While it may physically fit some aftermarket housings, we strongly advise using it only with genuine TRANSMISSION HOUSING components to ensure proper oil gallery alignment and sealing.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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