Overview
The ZF 4657.374.054 is a precision-engineered component designed specifically for the WG 190 Series transmission. This OEM genuine part plays a critical role in managing hydraulic pressure distribution and ensuring smooth gear engagement within the transmission’s valve body assembly. As a wear-sensitive element, the 4657.374.054 directly influences shift quality and overall drivetrain reliability. The SKU 4657.374.054 is manufactured to ZF’s exacting tolerances, making it a direct replacement for failed units in heavy-duty commercial vehicles and industrial machinery.
Symptoms of Failure
- Delayed or harsh gear engagement: When the 4657.374.054 wears, hydraulic pressure drops, causing noticeable lag or jarring shifts, especially under load.
- Intermittent transmission slipping: A worn part can cause erratic clutch pack application, leading to power loss during acceleration or uphill driving.
- Visible oil seepage around the valve body: Degraded sealing surfaces on the 4657.374.054 often result in fluid leaks, leaving puddles under the vehicle or transmission housing.
- Erratic shift patterns: Internal wear may trigger fault codes or cause the transmission to hunt between gears, reducing fuel efficiency and drivability.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.374.054 |
| Material | High-grade aluminum alloy with hardened steel inserts |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 80 mm x 45 mm |
| Operating Temperature Range | -40°C to +120°C |
| Surface Finish | Anodized corrosion-resistant coating |
Compatibility
This part is engineered for the ZF WG 190 Series, but it also fits select models in the WG 180 and WG 200 families due to shared hydraulic architecture. It is commonly used in ZF 6WG190, 5WG190, and 6WG200 transmissions found in buses, construction loaders, and agricultural tractors. Always verify your transmission’s serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101088 | TRANSMISSION HOUSING | Encloses and protects internal gear sets and shafts |
| 4657201183 | HOUS.FRONT SECT | Front section of the transmission casing, supports input shaft |
| 4657201184 | HOUSING REAR PART | Rear casing segment, houses output shaft bearings |
| 4657298111 | HOUSING REAR SECTION | Reinforced rear section for heavy-load applications |
| 0631306816 | CYLINDRICAL PIN | Aligns and secures housing sections during assembly |
| 0636100801 | CAP SCREW | Fastens housing components with high torque retention |
| 4681301015 | FIXING PLATE | Locks internal components to prevent axial movement |
| 4681301016 | SCREEN SHEET | Filters debris from hydraulic fluid flow |
| 4681301017 | SCREEN SHEET | Secondary filtration layer for fine particle capture |
| 0636100803 | CAP SCREW | High-strength fastener for critical housing joints |
Frequently Asked Questions
Q: Can the 4657.374.054 be reused after a transmission rebuild?
A: No. ZF recommends replacing this part with a new OEM unit during any major overhaul, as internal wear compromises sealing and pressure regulation.
Q: How do I confirm this part fits my WG190 transmission?
A: Check the transmission’s data plate for the model number (e.g., 6WG190) and compare the serial number against ZF’s compatibility list. The 4657.374.054 is also compatible with certain WG180 and WG200 variants.
Q: What tools are needed for installation?
A: Standard metric sockets, a torque wrench, and a sealant kit are required. Always consult the ZF service manual for specific torque values and assembly procedures.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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