Overview
The ZF 4657.101.087 TRANSMISSION HOUSING is the central structural core for the WG191 and WG211 series transmissions. This OEM genuine part encloses the gear train, valve body, and torque converter assembly, providing precise alignment for all rotating components. As the main casing, it absorbs torsional loads and maintains hydraulic fluid integrity under high-pressure operation. The SKU 4657.101.087 is engineered to ZF’s original specifications, ensuring a direct replacement without modification. When paired with the 4657301172: HOUS.FRONT SECT and the 4657301173: HOUSING REAR PART, this housing forms a complete sealed assembly that withstands extreme thermal cycling.
Symptoms of Failure
- External oil seepage at mating flanges: A cracked or warped housing allows transmission fluid to escape, often visible as drips near the bell housing or pan rail. This is a common long-tail search query for “ZF WG191 oil leak repair.”
- Gear engagement hesitation or slipping: When the housing distorts, valve body alignment shifts, causing delayed shifts or clutch pack slip under load. Technicians searching for “WG211 transmission slipping fix” frequently identify this root cause.
- Abnormal vibration during acceleration: Bearing bore wear within the housing creates radial play, transmitting vibration through the driveline. This symptom is often searched as “ZF transmission housing vibration diagnosis.”
- Contaminated fluid from casting porosity: Micro-fractures allow coolant or debris ingress, leading to premature wear. This is a critical failure mode for “ZF housing porosity replacement.”
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.101.087 |
| Material | High-grade aluminum alloy (A356-T6) |
| Weight | 18.4 kg (40.6 lbs) |
| Overall Length | 485 mm |
| Overall Width | 320 mm |
| Overall Height | 275 mm |
| Bolt Hole Pattern | 12-point, M12 x 1.75 |
| OEM Reference | ZF 4657.101.087 |
| Seal Surface Finish | Ra 0.8 µm |
Compatibility
This housing is specifically designed for ZF WG191 and WG211 series transmissions. It also fits the WG180, WG200, and WG210 variants when used with the correct bell housing adapter. The casting accommodates both 4-speed and 5-speed planetary gear sets. For proper assembly, always install new 0631306816: CYLINDRICAL PIN dowels and 0636102489: CAP SCREW fasteners to maintain factory torque specifications. The housing is not backward-compatible with pre-1990 WG models without modification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657301172 | HOUS.FRONT SECT | Front section of the transmission case |
| 4657301173 | HOUSING REAR PART | Rear section of the transmission case |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0636102489 | CAP SCREW | Main housing bolt (M12) |
| 4656301148 | FIXING PLATE | Secures valve body to housing |
| 0636102463 | CAP SCREW | Fixing plate bolt (M10) |
| 4657201133 | SCREEN SHEET | Filter screen for oil pump intake |
| 0636115287 | CAP SCREW | Screen sheet retaining bolt |
| 4657301065 | PLATE | Oil passage cover plate |
| 4657201032 | SUCTION TUBE | Oil pickup tube assembly |
Frequently Asked Questions
Q: Can the ZF 4657.101.087 housing be repaired if cracked?
A: ZF does not recommend welding or repairing cast aluminum housings due to risk of porosity and dimensional distortion. Replacement with this OEM genuine part is the only approved solution for WG191/WG211 transmissions.
Q: Does this housing include the front and rear sections?
A: No, this is the main center housing only. You must order the 4657301172: HOUS.FRONT SECT and 4657301173: HOUSING REAR PART separately to complete the assembly.
Q: What torque specification should be used for the cap screws?
A: For the 0636102489: CAP SCREW fasteners, ZF specifies 95 Nm (70 ft-lbs) in a cross-tightening pattern. Always use new fasteners and apply thread locker.
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ZF 4657.101.087 TRANSMISSION HOUSING – Housing RFQ Support
PartsZF helps B2B buyers source ZF 4657.101.087 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 4657.101.087 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657033305
- Documentation reference: 4657034301
- Documentation reference: 4657063301
- Documentation reference: 4657063302
- Illustration section: WG 191
- Illustration section: WG 211
- 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 | 4657.101.087 |
|---|---|
| Normalized SKU | 4657101087 |
| 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.
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- ZF 4644.301.402 TRANSMISSION HOUSING
