Overview
The ZF 4657.199.008 LOOSE PARTS for WG190 is a critical service kit designed to restore the internal integrity of your ZF WG190 series transmission. This genuine OEM part number 4657.199.008 contains the specific loose hardware and fasteners required during a major overhaul or when replacing the main transmission housing. It ensures that all internal components are securely anchored, preventing unwanted movement that can lead to catastrophic gear damage. This kit is often deployed in conjunction with the 4657101033: TRANSMISSION HOUSING to guarantee a precise fit and long service life.
Symptoms of Failure
When the loose parts in this assembly begin to fail, operators often notice internal rattling or knocking noises during gear engagement, indicating that fasteners have loosened. Another common symptom is erratic shifting or gear slippage under load, caused by misaligned internal components. You may also observe metal particles in the transmission fluid during routine checks, a sign that loose hardware is grinding against gears. Finally, difficulty engaging reverse gear is a frequent complaint, as the rear housing alignment becomes compromised without these parts.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.199.008 |
| Product Type | LOOSE PARTS Kit |
| Material | Hardened Steel / Alloy |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| OEM Reference | ZF WG190 Series |
| Application | Internal fasteners & spacers |
Compatibility
This genuine ZF 4657.199.008 kit is specifically engineered for the WG 190 Series transmission family. It is also compatible with the closely related WG180 and WG200 models, which share the same internal architecture for the housing assembly. When servicing these units, always pair this kit with the 4657201027: HOUS.FRONT SECT and the 4657201012: HOUSING REAR PART to ensure proper sealing and alignment. Additionally, the 0631306792: CYLINDRICAL PIN is a mandatory companion part for precise dowel alignment during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for the gearset |
| 4657201027 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201012 | HOUSING REAR PART | Rear section of the transmission housing |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636100801 | CAP SCREW | Fastener for securing housing flanges |
| 4656301148 | FIXING PLATE | Locks internal components in position |
| 4657301032 | SCREEN SHEET | Filter screen for fluid passages |
| 4657301033 | SCREEN SHEET | Secondary filter screen for oil flow |
| 0636100803 | CAP SCREW | High-torque fastener for critical joints |
| 4681301040 | OIL FEED.HOUSG. | Distributes lubricant to internal bearings |
Frequently Asked Questions
Q: Can I reuse the old fasteners from my WG190 instead of buying this kit?
A: It is not recommended. The 4657.199.008 LOOSE PARTS kit contains new, factory-torqued hardware that prevents thread fatigue and ensures proper clamping force. Reusing old bolts can lead to the failure symptoms described above.
Q: Does this kit include the cylindrical pin for alignment?
A: No, the 0631306792: CYLINDRICAL PIN is a separate item. You must order it alongside this kit to correctly align the front and rear housing sections during assembly.
Q: How do I know if my transmission needs this specific loose parts set?
A: If you are replacing the 4657101033: TRANSMISSION HOUSING or the 4657201012: HOUSING REAR PART, this kit is mandatory. It is also required if you notice any of the failure symptoms listed above during a routine inspection.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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