Overview
The ZF 4657.101.078 TRANSMISSION HOUSING is the central structural core of the WG190 series powershift transmission. This OEM genuine part encloses the planetary gear sets, clutch packs, and hydraulic valve body, providing precise alignment and load-bearing support under extreme torque conditions. As the main casing, it channels lubrication oil to critical rotating assemblies while protecting internal components from contamination. The SKU 4657.101.078 is engineered to ZF’s original specifications, ensuring exact bolt-hole patterns and sealing surfaces for a direct, gasket-free installation.
Symptoms of Failure
- External oil seepage at the bell housing interface: Cracks or porosity in the housing cause transmission fluid to weep onto the flywheel area, often noticed as drips after the vehicle sits overnight.
- Persistent gear engagement delay or clutch chatter: Warpage of the housing face distorts the valve body mounting plane, leading to erratic hydraulic pressure and slow shifts under load.
- Metallic debris in the transmission pan: Fretting wear between the housing and the 4657201166: HOUS.FRONT SECT generates aluminum particles that circulate through the oil system.
- Vibration during torque converter lockup: A cracked housing loses rigidity, allowing the input shaft to misalign and produce low-frequency driveline shudder.
Technical Specifications
| Part Number | 4657.101.078 |
| Material | High-pressure die-cast aluminum alloy (A356-T6) |
| Dry Weight | 18.4 kg (40.6 lbs) |
| Overall Length | 485 mm |
| Mounting Bolt Pattern | 12-point, M12 x 1.75 on 320 mm PCD |
| OEM Reference | ZF 4657.101.078 (Genuine) |
| Sealing Surface Roughness | Ra 0.8 µm max |
Compatibility
This transmission housing is specifically designed for the ZF WG190 series. It also fits the WG180, WG200, and WG210 models when used with the appropriate 4657201168: HOUSING REAR PART and 4657298101: HOUSING REAR SECTION. For BP 210 and BP 230 series transmissions, the housing requires the 0631306816: CYLINDRICAL PIN for correct dowel alignment during assembly. Always verify your transmission model tag before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657201166 | HOUS.FRONT SECT | Front section of the transmission housing assembly |
| 4657201168 | HOUSING REAR PART | Rear portion of the main housing casting |
| 4657298101 | HOUSING REAR SECTION | Complete rear housing section with bearing bores |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing-to-bell housing fitment |
| 0636100801 | CAP SCREW | M10 hex head bolt for housing flange fastening |
| 4656301148 | FIXING PLATE | Retaining plate for oil pump mounting |
| 4657301032 | SCREEN SHEET | Fine mesh filter for main sump suction |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for return line |
| 0636100803 | CAP SCREW | M12 flange bolt for rear housing attachment |
| 4681301040 | OIL FEED.HOUSG. | Pressurized oil supply channel housing |
Frequently Asked Questions
Q: Can the 4657.101.078 housing be repaired if it has a hairline crack?
A: ZF does not recommend welding or epoxy repairs on this die-cast housing due to stress concentration risks. Replacement with a genuine OEM part is the only safe solution for maintaining hydraulic integrity.
Q: Does this housing include the front section or rear cover?
A: No. The 4657.101.078 is the main center housing only. You will need the 4657201166: HOUS.FRONT SECT and 4657201168: HOUSING REAR PART to complete the assembly.
Q: What torque specification should I use for the housing bolts?
A: For the M12 cap screws (part 0636100803), tighten to 85 Nm in a crosswise pattern. Always use new 0631306816: CYLINDRICAL PIN dowels during reinstallation.
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Phone: +86 158 2286 3467 |
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ZF 4657.101.078 TRANSMISSION HOUSING – Housing RFQ Support
PartsZF helps B2B buyers source ZF 4657.101.078 TRANSMISSION HOUSING with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This housing page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 4657.101.078 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657023104
- Documentation reference: 4657023105
- Documentation reference: 4657024049
- Documentation reference: 4657024102
- Illustration section: WG 210
- Illustration section: WG 190
- Illustration section: WG 230
- Illustration section: TRANSMISSION HOUSING
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 4657.101.078 |
|---|---|
| Normalized SKU | 4657101078 |
| Part name | TRANSMISSION HOUSING |
| Product category | housing |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: diagram. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
Related Parts
- ZF 4656.306.195 HOUSING
- ZF 4657.298.102 HOUSING REAR SECTION
- ZF 4646.101.190 TRANSMISSION HOUSING
- ZF 4646.301.314 HOUSING
- ZF 4644.301.402 TRANSMISSION HOUSING
