Overview
The ZF 4657.103.447 OUTPUT for WG211 is a critical driveline component engineered to transfer rotational force from the transmission’s planetary gear set to the output flange or driveshaft. Positioned at the rear of the gearbox housing, this OEM genuine part ensures precise torque delivery and maintains the structural integrity of the final drive assembly. The SKU 4657.103.447 is precision-machined to ZF’s exacting tolerances, making it essential for reliable power transmission in heavy-duty applications. This output component works in concert with the TRANSMISSION HOUSING to seal the gear train and withstand high axial loads.
Symptoms of Failure
When the ZF 4657.103.447 output begins to wear, operators often notice oil seepage around the rear output seal area, a common long-tail search query for “ZF WG211 output shaft leak.” Another frequent symptom is intermittent gear slipping under load, particularly during acceleration or hill climbs, as the splines lose their grip. You may also detect unusual vibration or whining noise from the transmission rear section, indicating bearing surface degradation. Finally, difficulty engaging or disengaging the PTO can occur if the output’s alignment shifts, a problem often traced back to a worn 4657.103.447 unit.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.103.447 |
| Material | Case-hardened alloy steel (16MnCr5) |
| Weight | 2.85 kg (6.28 lbs) |
| Overall Length | 215 mm |
| Spline Diameter | 42 mm (internal) |
| OEM Reference | ZF 4657.103.447 |
| Surface Finish | Black oxide coated |
Compatibility
This genuine output is primarily designed for the ZF WG 211 Series transmissions, including models WG211, WG211C, and WG211E. It also fits select variants of the WG180 and WG200 series when used with the correct HOUS.FRONT SECT adapter. For WG150 and WG250 applications, verify the spline count matches your output flange. The part is not compatible with older ZF 4HP or 5HP series without substantial modification to the HOUSING REAR PART.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Encloses and supports the gear train assembly |
| 4657301130 | HOUS.FRONT SECT | Front section housing for input shaft and pump |
| 4657301131 | HOUSING REAR PART | Rear housing section that mates with the output |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing dowel positioning |
| 0636102489 | CAP SCREW | M10 fastener for output flange retention |
| 4656301148 | FIXING PLATE | Locks output shaft axial play |
| 0636102463 | CAP SCREW | M8 bolt for housing cover attachment |
| 4657201133 | SCREEN SHEET | Magnetic debris screen for oil sump |
| 0636115287 | CAP SCREW | M12 bolt for rear housing flange |
| 4657301065 | PLATE | Thrust washer for output bearing preload |
Frequently Asked Questions
Q: Can I install the 4657.103.447 output without replacing the CYLINDRICAL PIN?
A: It is strongly recommended to replace the alignment pin (0631306816) whenever the output is changed, as wear on the pin can cause misalignment and premature failure of the new output splines.
Q: How do I know if my WG211 needs a new 4657.103.447 output?
A: Measure the spline backlash using a dial indicator. If play exceeds 0.5 mm at the output flange, or if you see metal particles in the oil filter, the output is likely worn and should be replaced alongside the HOUSING REAR PART.
Q: Is the 4657.103.447 compatible with the ZF WG180 series?
A: Yes, but you must also replace the HOUS.FRONT SECT to match the WG180’s shorter bell housing. Always verify the output flange bolt pattern before ordering.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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