Overview
The ZF 4642.109.428 is a precision-engineered internal component designed for the WG100, WG110, and WG150 series transmissions. This OEM genuine part plays a critical role in the hydraulic control circuit, ensuring proper fluid routing and pressure regulation within the gearbox assembly. As a direct replacement for the original factory component, the SKU 4642.109.428 restores the transmission’s shifting integrity and operational reliability. This part is typically mounted within the main valve body area, working in conjunction with the TRANSMISSION HOUSING (4642101109) to maintain structural alignment and fluid containment.
Symptoms of Failure
When the ZF 4642.109.428 begins to wear, operators often notice specific performance degradation. The most common failure symptoms include:
- Erratic gear engagement or delayed shifting – Worn internal surfaces cause inconsistent hydraulic pressure, leading to harsh or hesitant gear changes.
- Internal transmission oil leaks – Deterioration of sealing surfaces allows fluid to bypass, resulting in visible drips or low oil levels.
- Transmission overheating – Improper fluid flow due to a failing 4642.109.428 can cause elevated operating temperatures and reduced efficiency.
- Whining or grinding noises during operation – Metal-to-metal contact from a worn component produces audible distress signals from the gearbox.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4642.109.428 |
| Material | Hardened steel with corrosion-resistant coating |
| Weight | Approximately 0.85 kg (1.87 lbs) |
| Dimensions | 120 mm x 45 mm x 30 mm |
| OEM Reference | ZF 4642.109.428 (Genuine) |
| Compatible Housing | TRANSMISSION HOUSING (4642301205) |
Compatibility
This OEM genuine part is engineered specifically for ZF WG-series transmissions. It is a direct fit for the following models:
- ZF WG100 Series
- ZF WG110 Series
- ZF WG150 Series
- ZF WG180 Series (with adapter verification)
- ZF WG200 Series (with adapter verification)
For proper installation, always pair this component with the correct GROOVED STUD (0631311009) and ensure the TYPE PLATE (0730365125) is referenced for exact model identification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing for valve body support |
| 0730365125 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Alignment fastener for housing assembly |
| 4642301168 | SCREEN SHEET | Fluid filtration mesh |
| 4642301169 | SCREEN SHEET | Secondary fluid filtration mesh |
| 0636100621 | HEXAGON SCREW | Mounting fastener for covers |
| 4642301186 | SCREEN SHEET | Fine filtration screen |
| 4644106300 | SHIFT SYSTEM | Gear selection mechanism |
| 4644306500 | COVER PLATE | Protective cover for internal components |
Frequently Asked Questions
Q: How do I know if the ZF 4642.109.428 is failing in my WG100 transmission?
A: Look for delayed engagement when shifting from neutral to drive, combined with visible oil seepage around the valve body area. These are strong indicators that the 4642.109.428 requires replacement.
Q: Can I install this part without replacing the transmission housing?
A: Yes, but it is strongly recommended to inspect the TRANSMISSION HOUSING (4642101109) for wear or damage during the service. A compromised housing can accelerate failure of the new component.
Q: Is the 4642.109.428 compatible with the ZF WG150 series?
A: Yes, this OEM genuine part is fully compatible with the WG150 series. Always cross-reference the TYPE PLATE (0730365125) on your transmission to confirm exact model specifications before ordering.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
