Overview
The ZF 4657.201.012 HOUSING REAR PART is a critical structural component designed for the WG190 and WG210 series transmissions. This OEM genuine part forms the aft section of the transmission casing, providing essential support for the output shaft, bearing assemblies, and sealing surfaces. It serves as the primary barrier against contamination and fluid loss, ensuring the internal gear train remains properly lubricated and aligned under heavy load. The SKU 4657.201.012 is precision-machined to ZF’s exacting tolerances, making it a direct replacement for worn or damaged rear housings in commercial vehicle drivelines.
Symptoms of Failure
- Rear main seal oil leaks: When the housing rear part warps or develops micro-cracks, transmission fluid seeps past the output seal, leaving visible puddles under the vehicle. This is a common long-tail search query for “ZF WG190 rear housing oil leak.”
- Abnormal driveline vibration: A cracked or distorted housing allows the output bearing to shift, causing rhythmic shaking during acceleration. Technicians often search for “transmission housing vibration WG210 fix.”
- Gear engagement difficulty: Misalignment from a damaged rear housing prevents the shift forks from moving freely, leading to hard shifting or gear slipping under torque. This symptom is frequently queried as “ZF transmission hard shifting rear housing.”
- Contaminated transmission fluid: A compromised housing allows dirt and moisture ingress, which accelerates internal wear. Operators may notice metallic particles in the fluid, prompting searches for “transmission housing debris contamination.”
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4657.201.012 |
| Material | High-strength aluminum alloy (A356-T6) |
| Weight | 4.2 kg (9.3 lbs) |
| Overall Length | 285 mm |
| Overall Width | 210 mm |
| Bolt Hole Pattern | 12-point, M10 x 1.5 |
| Sealing Surface Finish | Ra 0.8 µm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This housing rear part is engineered for the ZF WG190 and WG210 series transmissions, which are commonly found in medium-duty trucks, buses, and off-highway equipment. Based on its structural design, it is also compatible with the WG180 and WG200 models, as these share the same rear mounting interface and output bearing geometry. Always verify the casting number on your existing housing before installation.
During replacement, the 4657101033: TRANSMISSION HOUSING serves as the main body that mates directly to this rear section. The 4657201027: HOUS.FRONT SECT completes the front assembly, while 0631306792: CYLINDRICAL PIN ensures precise alignment during reassembly. Secure the unit using 0636100801: CAP SCREW fasteners to maintain proper clamping force.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main casing that encloses the gear set |
| 4657201027 | HOUS.FRONT SECT | Front section of the transmission housing |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Retains internal components in position |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for debris |
| 0636100803 | CAP SCREW | Alternate fastener for rear housing |
| 4681301040 | OIL FEED.HOUSG. | Distributes pressurized oil to bearings |
| 4656301023 | GASKET | Seals the housing-to-housing interface |
Frequently Asked Questions
Q: Can I install the 4657.201.012 housing on a ZF WG200 transmission?
A: Yes, this rear housing is mechanically interchangeable with WG180, WG190, WG200, and WG210 models, provided the output shaft and bearing configuration match. Always compare the bolt pattern and seal diameter to your original part.
Q: What torque specification should I use for the cap screws when mounting this housing?
A: ZF recommends tightening the M10 cap screws to 45 Nm (33 ft-lbs) in a cross-pattern sequence. Use new 0636100801: CAP SCREW fasteners to ensure consistent clamping force and prevent leaks.
Q: How do I know if my housing is warped before installation?
A: Place a straightedge across the mating surface and check for gaps exceeding 0.05 mm using a feeler gauge. Warpage beyond this tolerance will cause oil leaks and bearing misalignment, requiring replacement with this OEM part.
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Phone: +86 158 2286 3467 |
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ZF 4657.201.012 HOUSING REAR PART – Housing RFQ Support
PartsZF helps B2B buyers source ZF 4657.201.012 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 4657.201.012 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657023003
- Documentation reference: 4657024014
- Documentation reference: 4657024016
- Documentation reference: 4657024017
- 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 | 4657.201.012 |
|---|---|
| Normalized SKU | 4657201012 |
| 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.
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- ZF 4644.301.402 TRANSMISSION HOUSING
