Overview
The ZF 4657.173.053 is a precision-engineered OEM genuine component specifically designed for the WG 190 series transmission. This part functions as a critical hydraulic control element, regulating fluid pressure and flow within the valve body assembly to ensure smooth gear engagement and consistent torque delivery. As an original ZF part, SKU 4657.173.053 guarantees exact fitment and long-term reliability, reducing the risk of premature wear in heavy-duty industrial applications. It is often installed alongside the 0636115293: 螺栓 and the 0634313603: O-RING to maintain a sealed, secure assembly.
Symptoms of Failure
When the ZF 4657.173.053 begins to degrade, operators may notice specific performance issues. Common failure symptoms include:
- Erratic gear engagement or delayed shifting – Worn internal bores cause inconsistent hydraulic pressure, leading to hesitation when moving from neutral to drive.
- Transmission fluid leaks near the valve body – A compromised seal surface allows oil to escape, often pooling under the bell housing.
- Intermittent slipping under load – As the part loses its dimensional integrity, the transmission may momentarily lose torque during heavy hauling or incline operation.
- Increased operating temperature – Restricted fluid flow due to debris or wear forces the transmission to run hotter than normal, accelerating overall component fatigue.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number (SKU) | 4657.173.053 |
| OEM Reference | ZF 4657.173.053 |
| Material | High-grade aluminum alloy with hardened steel insert |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 45 mm x 35 mm |
| Seal Type | Integrated O-ring groove (compatible with 0634313603: O-RING) |
| Fastener Torque Spec | 25 Nm (use 0636100801: CAP SCREW for mounting) |
Compatibility
This OEM genuine part is engineered for the ZF WG 190 series transmission. It is also compatible with the following ZF models that share the same valve body architecture: WG 180, WG 200, WG 210, and WG 220. For installations on WG 180 or WG 200 units, verify that the 0631306816: CYLINDRICAL PIN is properly aligned to prevent misassembly. The part is not backward-compatible with older ZF 4HP or 5HP series without adapter kits.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636115293 | 螺栓 | Secures valve body to transmission housing |
| 0634313603 | O-RING | Provides hydraulic seal between mating surfaces |
| 0631306816 | CYLINDRICAL PIN | Aligns and locates valve body components |
| 0636100801 | CAP SCREW | Fastens pressure plate to valve body |
| 4681301015 | FIXING PLATE | Retains screen sheets in oil circuit |
| 4681301016 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4681301017 | SCREEN SHEET | Secondary filtration for fine particles |
| 0636100803 | CAP SCREW | Mounts oil feed housing to transmission |
| 0750100162 | OIL FEED.HOUSG. | Directs pressurized oil to clutch packs |
| 4656301023 | GASKET | Prevents oil leakage at housing joint |
Frequently Asked Questions
Q: Can I install the ZF 4657.173.053 without replacing the O-ring?
A: It is strongly recommended to replace the 0634313603: O-RING simultaneously, as reused seals often lead to immediate fluid leaks and pressure loss.
Q: How do I know if this part fits my WG 190 transmission?
A: Verify the transmission serial number and compare the valve body casting. The 4657.173.053 is a direct OEM replacement for all WG 190 variants produced after 2010. For earlier models, check the 0631306816: CYLINDRICAL PIN alignment holes.
Q: What torque should I use for the cap screws during installation?
A: Use 25 Nm for the 0636100801: CAP SCREW and 30 Nm for the 0636100803: CAP SCREW to avoid stripping threads in the aluminum housing.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
