Overview
The ZF 4657.201.103 HOUSING REAR PART is a critical structural component engineered for the WG190, WG210, and WG230 series transmissions. This OEM genuine part forms the aft enclosure of the gearbox, sealing the output shaft assembly and supporting the rear bearing carrier. As the primary interface between the transmission and the driveline, the housing rear part ensures precise alignment of internal components while containing transmission fluid under high pressure. The SKU 4657.201.103 is manufactured to ZF’s exacting tolerances, using high-strength cast iron to withstand torsional loads and thermal expansion. When paired with the 4657101051: TRANSMISSION HOUSING, this rear section completes the main structural loop of the transmission, providing a rigid foundation for planetary gear sets and clutch packs.
Symptoms of Failure
- Rear main seal oil leaks: A worn or cracked housing rear part often causes fluid seepage around the output flange, visible as drips under the transmission bellhousing. This is a common long-tail search query for “ZF WG190 rear oil leak repair.”
- Output shaft play or vibration: Degradation of the bearing seat in the housing leads to excessive axial or radial movement, resulting in driveline shudder during acceleration or deceleration.
- Gear engagement hesitation: Misalignment from a damaged housing rear part can cause delayed or harsh shifting, particularly in reverse or first gear, as the planetary carrier loses proper support.
- Contaminated transmission fluid: Cracks in the housing allow debris ingress, leading to metallic particles in the oil pan and accelerated wear of internal components.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.201.103 |
| Material | GJL-250 Cast Iron (EN 1561) |
| Overall Length | 285 mm |
| Overall Width | 210 mm |
| Overall Height | 195 mm |
| Weight | 8.7 kg (19.2 lbs) |
| OEM Reference | ZF 4657.201.103 |
| Bolt Torque Spec | 65 Nm (M10 bolts) |
| Seal Bore Diameter | 110 mm |
Compatibility
This housing rear part is designed for ZF’s WG series powershift transmissions, specifically the WG180, WG190, WG200, WG210, and WG230 models. It is a direct replacement for units manufactured between 2005 and 2023. The part interfaces with the 4657201151: HOUS.FRONT SECT to form the complete transmission casing. For WG180 and WG200 variants, verify the output flange bolt pattern matches your application. The housing also accommodates the 0631306816: CYLINDRICAL PIN for precise dowel alignment during assembly. If you are servicing a WG230, note that the rear housing shares the same bolt pattern but uses a different oil feed passage; cross-reference with the 4472239184: HOUSING REAR PART for alternative configurations.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101051 | TRANSMISSION HOUSING | Main casing enclosing gear sets and clutches |
| 4657201151 | HOUS.FRONT SECT | Front section housing torque converter and pump |
| 4472239184 | HOUSING REAR PART | Alternate rear housing for specific WG variants |
| 0631306816 | CYLINDRICAL PIN | Dowel pin for alignment between housing sections |
| 0636100801 | CAP SCREW | M10 bolt for securing housing to transmission |
| 4656301148 | FIXING PLATE | Retainer plate for output bearing |
| 4657301032 | SCREEN SHEET | Filter screen for oil return passage |
| 4657301033 | SCREEN SHEET | Secondary filter screen for high-pressure circuit |
| 0636100803 | CAP SCREW | M12 bolt for heavy-duty housing attachment |
| 4681301040 | OIL FEED.HOUSG. | Oil feed tube assembly for lubrication circuit |
Frequently Asked Questions
Q: Can the 4657.201.103 housing be used on a ZF WG180 transmission?
A: Yes, this housing rear part is fully compatible with WG180 models, provided the output shaft and bearing assembly match the original specification. Always verify the dowel pin alignment using the 0631306816: CYLINDRICAL PIN during installation.
Q: What is the typical service life of this housing rear part?
A: Under normal operating conditions, the cast iron housing lasts the lifetime of the transmission. However, if you experience rear seal leaks or output shaft vibration, inspect the housing for cracks or corrosion. Replacement is recommended if the bearing bore exceeds 110.05 mm.
Q: Do I need to replace the oil feed housing when installing this part?
A: Not necessarily, but it is good practice to inspect the 4681301040: OIL FEED.HOUSG. for blockages or wear. The oil feed tube routes through the rear housing and can become clogged with debris from a failing clutch pack.
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ZF 4657.201.103 HOUSING REAR PART – Housing RFQ Support
PartsZF helps B2B buyers source ZF 4657.201.103 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 4657.201.103 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657024100
- Documentation reference: 4657024101
- Documentation reference: 4657024104
- Documentation reference: 4657024105
- 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 | 4657.201.103 |
|---|---|
| Normalized SKU | 4657201103 |
| Part name | HOUSING REAR PART |
| Product category | housing |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: fallback. 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.
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