Overview
The ZF 4657.183.283 is a precision-engineered OEM genuine part specifically designed for the WG 190 Series transmission. This component functions as a critical sealing and alignment interface within the gearbox assembly, ensuring proper oil flow and preventing contamination between the main housing sections. The SKU 4657.183.283 is manufactured to ZF’s exacting tolerances, making it essential for maintaining hydraulic pressure and mechanical stability in heavy-duty industrial transmissions. When installed alongside the 4657101082: TRANSMISSION HOUSING, this part creates a secure boundary that supports the entire drivetrain under high torque loads.
Symptoms of Failure
- External oil seepage at the housing joint: When the 4657.183.283 degrades, operators often notice fluid weeping between the 4657201166: HOUS.FRONT SECT and the main casing, leading to gradual transmission fluid loss.
- Intermittent gear engagement hesitation: A worn part can cause pressure drops, resulting in delayed shifting or slipping under load, particularly during cold starts.
- Abnormal vibration from the bell housing area: Misalignment due to a compromised seal surface creates low-frequency rumbling that intensifies at highway speeds.
- Contaminated transmission fluid: Failure allows debris to bypass the filtration system, visible as metallic particles in the oil pan during routine checks.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 4657.183.283 |
| Material | High-grade aluminum alloy with nitrile rubber sealing |
| Weight | 1.85 kg (4.08 lbs) |
| Outer Diameter | 245 mm |
| Inner Diameter | 180 mm |
| Thickness | 22 mm |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF WG 190 Series |
Compatibility
This OEM genuine part is primarily designed for the ZF WG 190 transmission series, but it also fits select models in the WG 180 and WG 200 families due to shared housing architecture. It is directly compatible with the 4657201170: HOUSING REAR PART and the 4657298102: HOUSING REAR SECTION, ensuring a precise fit for rebuilds. Always verify your transmission’s serial number before ordering, as minor variations exist between early and late production units.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Forward section of the transmission housing |
| 4657201170 | HOUSING REAR PART | Rear structural component for output shaft |
| 4657298102 | HOUSING REAR SECTION | End cap assembly for final drive |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | Fastener for housing attachment |
| 4656301148 | FIXING PLATE | Retention bracket for internal components |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circulation |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for debris |
| 0636100803 | CAP SCREW | Secondary fastener for cover plates |
Frequently Asked Questions
Q: Can the 4657.183.283 be reused during a transmission rebuild?
A: ZF recommends replacing this part with every overhaul, as the sealing surfaces compress permanently during initial installation. Reuse often leads to micro-leaks within 500 operating hours.
Q: How do I confirm this part fits my WG 190 transmission?
A: Locate the transmission data plate on the passenger side of the housing. The serial number must begin with “WG190” followed by a six-digit build code. This part is not backward-compatible with WG 150 series units.
Q: What torque specification applies to the mounting bolts?
A: When securing this component to the 4657201166: HOUS.FRONT SECT, use 85 Nm (63 ft-lbs) in a star pattern, followed by a 90-degree angle turn. Always replace the 0636100801: CAP SCREW fasteners simultaneously.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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