Overview
The ZF 4657.183.342 LOOSE PARTS for WG191 is a critical service kit designed to restore the precision and reliability of your ZF WG191 series transmission. This OEM genuine part, identified by SKU 4657.183.342, contains the essential loose hardware and fasteners required during a major overhaul or rebuild of the transmission assembly. It sits within the main gear train and housing interface, ensuring that all internal components remain securely torqued and aligned under high-load conditions. Without this kit, even minor disassembly can lead to improper fitment, compromising the entire drivetrain’s integrity.
Symptoms of Failure
When the components in the ZF 4657.183.342 LOOSE PARTS kit wear out or are not replaced during service, operators typically encounter several distinct failure modes. The most common symptom is persistent oil seepage from the main housing joints, often mistaken for a gasket failure. You may also notice intermittent gear slippage under load, as loose fasteners allow the TRANSMISSION HOUSING to shift slightly. Another clear indicator is abnormal vibration or rattling during gear changes, caused by the CYLINDRICAL PIN losing its interference fit. Finally, difficulty engaging reverse gear often points to degraded alignment from worn loose parts in the rear section.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number / SKU | 4657.183.342 |
| OEM Reference | ZF WG191 Series |
| Material Composition | Hardened Steel / Alloy Steel |
| Weight (approx.) | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 80 mm x 30 mm |
| Included Components | Bolts, pins, washers, retaining rings |
| Associated Fasteners | 0636102489: CAP SCREW, 0636102463: CAP SCREW, 0636115287: CAP SCREW |
Compatibility
This genuine ZF 4657.183.342 LOOSE PARTS kit is specifically engineered for the WG 191 Series transmission family. Based on its part number structure and application, it is also compatible with closely related models including the WG180, WG200, and WG210 series when used in conjunction with the correct HOUS.FRONT SECT and HOUSING REAR PART. Always verify your transmission’s serial number before ordering. The kit is not backward-compatible with older WG120 or WG150 models without additional adapter plates.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657301130 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4657301131 | HOUSING REAR PART | Rear housing section for output shaft alignment |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating surfaces |
| 0636102489 | CAP SCREW | High-tensile fastener for housing bolts |
| 4656301148 | FIXING PLATE | Retaining plate for bearing preload |
| 0636102463 | CAP SCREW | M10 fastener for auxiliary mounting |
| 4657201133 | SCREEN SHEET | Oil filter screen for debris protection |
| 0636115287 | CAP SCREW | M12 bolt for final drive cover |
| 4657301065 | PLATE | Spacer plate for clutch pack clearance |
Frequently Asked Questions
Q: Can I reuse the old loose parts from my WG191 transmission instead of buying this kit?
A: It is strongly discouraged. The ZF 4657.183.342 kit contains new, factory-torqued fasteners and pins. Reusing old hardware often leads to stripped threads or improper clamping force, causing the exact failure symptoms described above.
Q: Does this kit include the housing gaskets or seals?
A: No. This is strictly a loose parts kit (bolts, pins, washers). You will need to order the appropriate gasket set separately. However, the kit does include the CYLINDRICAL PIN required for precise alignment of the HOUS.FRONT SECT.
Q: How do I verify that part 4657.183.342 fits my specific transmission?
A: Check the casting number on your existing TRANSMISSION HOUSING. If it matches the WG191 series prefix, this kit is compatible. For hybrid models using a HOUSING REAR PART from a different series, consult our technical support team.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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