Overview
The ZF 4657.199.040 LOOSE PARTS kit is a critical service component designed specifically for the WG160 and WG210 transmission series. This OEM genuine part contains the necessary fasteners, seals, and small hardware required to secure and seal the main transmission housing assembly. Positioned at the interface between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, this kit ensures proper clamping force and leak-free operation. The SKU 4657.199.040 is often ordered during a full transmission rebuild or when replacing the HOUSING REAR PART to guarantee all loose components meet factory torque specifications.
Symptoms of Failure
When the ZF 4657.199.040 LOOSE PARTS begin to degrade, operators typically notice three distinct failure modes. First, transmission fluid weeping from the housing seam occurs as the included gaskets and seals lose their elasticity, leading to visible oil drips under the vehicle. Second, intermittent gear engagement hesitation arises when the fasteners loosen over time, allowing slight misalignment between the HOUSING REAR PART and the main case. Third, abnormal vibration during low-speed operation indicates that the retaining hardware has fatigued, permitting micro-movement of internal components. Fourth, difficulty maintaining hydraulic pressure can result from compromised sealing surfaces, directly impacting shift quality in WG160 and WG210 transmissions.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 4657.199.040 |
| Material Composition | Steel alloy fasteners with nitrile rubber seals |
| Estimated Weight | 0.45 kg (1.0 lb) |
| Package Dimensions | 150 x 100 x 40 mm |
| OEM Reference | ZF 4657.199.040 |
| Compatible Fastener Torque | 45-55 Nm (per ZF service manual) |
Compatibility
This LOOSE PARTS kit is engineered for the ZF WG160 and WG210 series, but it also fits select variants of the WG180 and WG200 models that share the same housing architecture. The kit is essential when servicing the TRANSMISSION HOUSING or replacing the HOUS.FRONT SECT. Always verify your transmission serial number against ZF application charts to confirm fitment, as the HOUSING REAR PART (4656201034) and the HOUSING REAR PART (4472239177) may require this kit during assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101032 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4656201034 | HOUSING REAR PART | Rear housing section for output components |
| 4472239177 | HOUSING REAR PART | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating |
| 0636100817 | CAP SCREW | Fastener for housing sections |
| 4656301016 | SCREEN SHEET | Filter screen for oil circuit |
| 4656301017 | SCREEN SHEET | Secondary filter screen variant |
| 0636100803 | CAP SCREW | Alternate fastener for housing |
| 4681301040 | OIL FEED.HOUSG. | Oil feed line housing adapter |
Frequently Asked Questions
Q: Can the ZF 4657.199.040 LOOSE PARTS be reused after disassembly?
A: ZF recommends replacing this kit with new OEM hardware whenever the transmission housing is opened, as the fasteners are torque-to-yield and seals compress permanently.
Q: Does this kit include the bolts for the HOUSING REAR PART?
A: Yes, the 4657.199.040 kit contains all necessary cap screws and cylindrical pins required to secure both the HOUSING REAR PART (4656201034) and the HOUSING REAR PART (4472239177) to the main case.
Q: How do I identify if my WG210 needs this loose parts kit?
A: If you observe oil seepage at the joint between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, or if you are performing a full rebuild, this kit is mandatory to restore factory sealing integrity.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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