Overview
The ZF 4657.103.408 OUTPUT for WG190 is a critical driveline component engineered to transfer rotational force from the transmission’s planetary gearset to the output shaft and downstream drive components. Positioned at the rear of the WG 190 series housing, this OEM genuine part ensures precise torque delivery and alignment within the powertrain. The SKU 4657.103.408 is manufactured to ZF’s exacting tolerances, providing a direct replacement that maintains factory-specified clearances and load capacity. This output assembly works in concert with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to form a sealed, rigid structure that withstands high-torque industrial applications.
Symptoms of Failure
- Oil leaks at the rear output seal – Worn output components often cause transmission fluid to seep past the seal, leading to low fluid levels and potential gear damage.
- Gear slipping under load – A failing output assembly can result in intermittent power loss or hesitation during acceleration, especially in heavy-duty WG190 applications.
- Unusual vibration or noise – Excessive play in the output bearing or spline wear produces a distinct whining or clunking sound during operation, indicating imminent failure.
- Erratic shifting patterns – Misalignment from a degraded output can confuse the transmission’s hydraulic control system, causing delayed or harsh gear changes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4657.103.408 |
| Material | Case-hardened alloy steel |
| Weight | 3.2 kg (7.1 lbs) |
| Length | 245 mm |
| Outer Diameter | 85 mm |
| Spline Count | 24 (internal) |
| OEM Reference | ZF 4657.103.408 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF output is specifically designed for the WG 190 series transmissions, but it also fits select models in the WG180 and WG200 families due to shared spline geometry and mounting interfaces. It is commonly used in municipal trucks, construction loaders, and agricultural tractors where the WG190 is the primary transmission. For proper installation, ensure the HOUSING REAR PART is free of cracks and that the CYLINDRICAL PIN is replaced to guarantee alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing that encloses gears and shafts |
| 4657201027 | HOUS.FRONT SECT | Front section of the housing supporting input components |
| 4657201012 | HOUSING REAR PART | Rear housing section that mates with the output assembly |
| 0631306792 | CYLINDRICAL PIN | Alignment pin for precise housing-to-output positioning |
| 0636100801 | CAP SCREW | Fastener securing housing sections together |
| 4656301148 | FIXING PLATE | Retains output bearing in correct axial position |
| 4657301032 | SCREEN SHEET | Filter screen protecting hydraulic circuits from debris |
| 4657301033 | SCREEN SHEET | Secondary filter screen for high-flow oil passages |
| 0636100803 | CAP SCREW | Heavy-duty fastener for output flange attachment |
| 4681301040 | OIL FEED.HOUSG. | Lubrication supply tube for output shaft bearings |
Frequently Asked Questions
Q: Can the 4657.103.408 output be used in a ZF WG180 transmission?
A: Yes, it is compatible with WG180 and WG200 models that share the same spline count and mounting bolt pattern, though always verify the rear housing interface first.
Q: What torque specification should I use when installing this output?
A: ZF recommends tightening the output flange nut to 250 Nm (184 ft-lb) and applying thread-locking compound to prevent loosening under heavy loads.
Q: How do I know if my output assembly is worn without removing it?
A: Check for radial play by prying on the output yoke—any movement exceeding 0.5 mm indicates bearing or spline wear requiring replacement.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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