Overview
The ZF 4657.183.403 LOOSE PARTS kit is a critical service package designed specifically for the WG 190 series transmission. This assembly contains the essential loose hardware and small components required to secure and align internal transmission sections during a rebuild or major repair. Positioned at the junction between the main casing and the rear housing, this kit ensures that the transmission’s structural integrity is maintained under high torque loads. The SKU 4657.183.403 is an OEM genuine part, guaranteeing exact fitment and material specifications that aftermarket alternatives cannot match. When paired with a new TRANSMISSION HOUSING, this kit provides the fasteners and locating pins necessary for a vibration-free assembly.
Symptoms of Failure
When the components within the ZF 4657.183.403 LOOSE PARTS kit begin to wear or become damaged, operators will notice distinct operational issues. The most common symptom is transmission oil seepage from the rear housing seam, often mistaken for a gasket failure. Another clear indicator is intermittent gear slippage under load, caused by micro-movement between the housing sections. You may also experience abnormal driveline vibration at highway speeds, which results from misaligned bearing bores. Finally, difficulty in shifting between forward and reverse gears can occur if the locating pins in this kit have sheared or corroded.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.183.403 |
| Material Composition | Hardened Steel / Zinc-Plated Alloy |
| Weight (Kit) | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4657.183.403 |
| Kit Contents | Locating pins, dowels, retaining clips |
| Torque Specification | 45 Nm (33 ft-lbs) for cap screws |
Compatibility
This LOOSE PARTS kit is engineered for the ZF WG 190 series, but it also shares dimensional compatibility with the WG 180 and WG 200 transmission families. It is specifically required when replacing the HOUS.FRONT SECT or the HOUSING REAR PART. For complete overhauls involving the HOUSING REAR SECTION, this kit is mandatory to secure the assembly. Always verify your transmission serial number against the WG190 parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101085 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657201161 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201162 | HOUSING REAR PART | Rear section housing for output shaft |
| 4657298107 | HOUSING REAR SECTION | Complete rear housing assembly |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 fastener for housing bolts |
| 4656301148 | FIXING PLATE | Locking plate for bolt retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter screen |
| 0636100803 | CAP SCREW | M12 fastener for rear cover |
Frequently Asked Questions
Q: Can I reuse the old hardware from my WG190 instead of buying the 4657.183.403 kit?
A: ZF strongly discourages reusing these loose parts. The fasteners are torque-to-yield and the locating pins wear over time. Using new OEM parts prevents housing misalignment and oil leaks.
Q: Does this kit include the cap screws for the rear housing?
A: No, the 4657.183.403 kit contains only the loose hardware (pins, clips, dowels). You will need to order CAP SCREW 0636100803 and CAP SCREW 0636100801 separately for a complete rebuild.
Q: How do I verify this kit fits my specific WG190 transmission?
A: Check the transmission data plate for the model suffix. This kit is compatible with WG190, WG180, and WG200 units built after 2008. For older units, verify the housing part numbers match the HOUSING REAR PART dimensions.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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