Overview
The ZF 4657.201.168 HOUSING REAR PART is a critical structural component designed specifically for the WG190 transmission series. This OEM genuine part forms the rear enclosure of the transmission casing, protecting the internal planetary gear sets and hydraulic control units from contamination while maintaining proper oil circulation. As a load-bearing housing section, it ensures precise alignment of the output shaft and bearing assemblies. The SKU 4657.201.168 is manufactured to ZF’s exacting tolerances, guaranteeing a seamless fit when paired with the 4657101078: TRANSMISSION HOUSING and the 4657201166: HOUS.FRONT SECT to complete the main casing assembly.
Symptoms of Failure
- Transmission fluid seepage at rear seal: A worn or cracked rear housing often causes oil to weep from the output flange area, leaving visible drips under the vehicle after parking.
- Abnormal driveline vibration during acceleration: When the housing loses structural integrity, the output shaft bearing support degrades, producing a low-frequency rumble that intensifies with speed.
- Contaminated transmission fluid from debris ingress: Cracks or pitting in the housing allow road grit and moisture to enter, leading to premature clutch wear and erratic shifting behavior.
- Misalignment of the rear mounting bracket: A distorted housing prevents proper bolt-up to the bellhousing, causing chronic loosening of fasteners and increased gear train noise.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4657.201.168 |
| Material | High-grade cast aluminum alloy (A356-T6) |
| Weight | 4.85 kg (10.7 lbs) |
| Overall Length | 312 mm |
| Mounting Bolt Pattern | 8 x M10 threaded holes on 180 mm PCD |
| OEM Reference | ZF 4657.201.168 |
| Seal Bore Diameter | 85.00 mm ±0.05 mm |
Compatibility
This rear housing component is engineered for the ZF WG190 transmission series and is also compatible with the BP 210, BP 230, WG 210, and WG 230 series. It directly replaces the earlier 4657298101: HOUSING REAR SECTION in updated production runs. For proper installation, use the 0631306816: CYLINDRICAL PIN to align the housing during assembly. This part is not suitable for WG180 or WG200 models without adapter kits.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main casing that encloses the gear train |
| 4657201166 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657298101 | HOUSING REAR SECTION | Alternate rear housing variant for earlier models |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Retention plate for internal components |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil intake |
| 4657301033 | SCREEN SHEET | Coarse mesh filter for return line |
| 0636100803 | CAP SCREW | Bolt for oil pan attachment |
| 4681301040 | OIL FEED.HOUSG. | Lubrication supply housing for bearings |
Frequently Asked Questions
Q: Can the 4657.201.168 be used on a ZF WG210 transmission?
A: Yes, this rear housing is fully compatible with the WG210 series, provided you also replace the mating gasket and check the alignment pin condition. It is a direct bolt-on upgrade for WG190 and WG210 models.
Q: What torque specification should I use for the mounting bolts?
A: ZF recommends tightening the M10 cap screws to 45 Nm (33 ft-lbs) in a crisscross pattern. Always use new 0636100801: CAP SCREW fasteners to prevent stress fractures in the housing flange.
Q: How do I identify if my housing is cracked versus just leaking from the seal?
A: Clean the rear housing thoroughly, then pressurize the transmission to 0.5 bar. Apply a soapy water solution; bubbles indicate a crack. A seal leak will appear as a steady drip only from the output shaft bore area.
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ZF 4657.201.168 HOUSING REAR PART – Housing RFQ Support
PartsZF helps B2B buyers source ZF 4657.201.168 HOUSING REAR PART 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 4657.201.168 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: 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 | 4657.201.168 |
|---|---|
| Normalized SKU | 4657201168 |
| Part name | HOUSING REAR PART |
| 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
