Overview
The ZF 4657.201.151 HOUS.FRONT SECT is a critical structural component engineered for the WG190 and WG210 series transmissions. This OEM genuine part forms the forward section of the main transmission casing, providing precise alignment for the input shaft, torque converter housing, and front bearing assembly. By maintaining rigid dimensional stability under high torque loads, this housing section ensures optimal gear mesh patterns and prevents driveline vibration. The SKU 4657.201.151 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or damaged front sections in heavy-duty industrial applications.
Symptoms of Failure
When the ZF 4657.201.151 HOUS.FRONT SECT begins to fail, operators often notice oil leaks around the front bell housing area due to cracked sealing surfaces. A second common symptom is abnormal gear engagement noise or slipping caused by misalignment of the input shaft bearing bore. You may also detect increased transmission fluid contamination from metallic debris as the housing wears against rotating components. Finally, difficulty shifting between forward and reverse gears frequently points to a compromised front section that no longer supports proper clutch pack alignment.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.201.151 |
| Material | High-strength cast aluminum alloy |
| Weight | Approx. 8.2 kg (18.1 lbs) |
| Dimensions (L x W x H) | 420 mm x 310 mm x 180 mm |
| OEM Reference | ZF 4657.201.151 |
| Sealing Surface Finish | Ra 0.8 µm machined |
| Bolt Torque Spec | 85 Nm (62.7 ft-lbs) |
Compatibility
This front housing section is specifically designed for the ZF WG190 and ZF WG210 transmission families. It also fits select variants of the WG180, WG200, and WG230 series when used with the correct adapter kit. The part is compatible with both standard and heavy-duty configurations found in construction equipment, agricultural machinery, and industrial material handlers. Always verify your transmission’s serial number against the OEM fitment chart before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101051 | TRANSMISSION HOUSING | Main structural casing for gear and shaft assembly |
| 4657201103 | HOUSING REAR PART | Encloses the output shaft and rear bearing support |
| 4472239184 | HOUSING REAR PART | Alternate rear housing for extended gear sets |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise housing mating |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Locks bearing caps and prevents rotation |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit debris |
| 4657301033 | SCREEN SHEET | Alternate micron rating screen for oil filtration |
| 0636100803 | CAP SCREW | High-tensile bolt for critical housing joints |
| 4681301040 | OIL FEED.HOUSG. | Distributes pressurized oil to clutch packs |
Frequently Asked Questions
Q: Can I install the ZF 4657.201.151 on a WG230 transmission without modifications?
A: While the WG230 shares the same bolt pattern, you may need to use the CYLINDRICAL PIN (0631306816) for alignment and verify clearance with the longer output shaft housing.
Q: What torque should I apply to the cap screws when mounting this front section?
A: Use 85 Nm for the CAP SCREW (0636100801) fasteners, applied in a cross-pattern sequence to prevent warping the sealing face.
Q: Is the 4657.201.151 compatible with the TRANSMISSION HOUSING (4657101051) from earlier production years?
A: Yes, the front section is backward-compatible, but always inspect the mating surfaces for wear and replace the FIXING PLATE (4656301148) if the original shows signs of deformation.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
