Overview
The ZF 4657.303.052 is a critical OEM genuine component engineered specifically for the WG 190 and WG 210 series transmissions. This part functions as a precision-machined housing or guide element within the valve body assembly, regulating hydraulic fluid flow to ensure smooth gear engagement and consistent clutch pack pressure. The SKU 4657.303.052 is manufactured to exact ZF tolerances, making it a direct replacement for worn units in heavy-duty commercial vehicle drivelines. When installed, it works in concert with the 0636115293: 螺栓 to secure the assembly, while the 0634313603: O-RING provides a leak-proof seal between mating surfaces.
Symptoms of Failure
- Delayed or harsh shifting – When the 4657.303.052 wears, internal fluid passages become obstructed, causing hesitation between gears or abrupt engagement during acceleration.
- Transmission fluid leaks near the valve body – A degraded housing or seal interface leads to external oil seepage, often visible as drips under the bell housing or around the pan gasket area.
- Erratic clutch pack engagement – Worn guide surfaces allow pressure fluctuations, resulting in slipping under load or unexpected neutral conditions during highway driving.
- Increased operating temperature – Restricted fluid flow forces the transmission to work harder, generating excess heat that may trigger warning lights or reduce component lifespan.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.303.052 |
| Material | High-grade aluminum alloy with corrosion-resistant coating |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 65 mm x 40 mm |
| OEM Reference | ZF 4657.303.052 (Genuine) |
| Sealing Surface | Precision-ground to 0.02 mm tolerance |
| Operating Pressure | Up to 18 bar (261 psi) |
Compatibility
This OEM part is designed for ZF WG 190 and WG 210 series transmissions, commonly found in medium-duty trucks, buses, and construction equipment. It also fits select variants of the WG 180 and WG 200 models when used with the correct 0631306816: CYLINDRICAL PIN for alignment. For installations requiring additional fastening torque, pair it with the 0636100801: CAP SCREW to ensure proper clamping force. Always verify your transmission model code before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636115293 | 螺栓 | Secures valve body components |
| 0634313603 | O-RING | Prevents fluid leaks at mating surfaces |
| 0631306816 | CYLINDRICAL PIN | Aligns housing during assembly |
| 0636100801 | CAP SCREW | Provides high-torque fastening |
| 4681301015 | FIXING PLATE | Stabilizes internal bracket |
| 4681301016 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4681301017 | SCREEN SHEET | Secondary filtration for fine particles |
| 0636100803 | CAP SCREW | Alternate fastener for specific models |
| 0750100162 | OIL FEED.HOUSG. | Directs oil to clutch packs |
| 4656301023 | GASKET | Seals the oil pan interface |
Frequently Asked Questions
Q: Can the 4657.303.052 be used in a ZF WG 180 transmission?
A: Yes, it is compatible with WG 180 models when the 0631306816: CYLINDRICAL PIN is used for proper alignment. Always cross-reference your transmission serial number.
Q: What causes premature failure of this part?
A: Common causes include contaminated transmission fluid, over-torquing of the 0636100801: CAP SCREW, or using non-OEM gaskets that allow debris ingress.
Q: Do I need to replace the O-ring when installing this part?
A: Yes, always replace the 0634313603: O-RING during service to guarantee a leak-free seal and prevent recurring hydraulic pressure loss.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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