Overview
The ZF 4657.304.033 COVER is a critical sealing and protective component engineered for the WG 190 and WG 210 series transmissions. This OEM genuine part sits on the exterior housing assembly, serving as a barrier against contaminants while maintaining internal oil pressure and structural integrity. The SKU 4657.304.033 is precision-machined to interface directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT, ensuring a leak-free seal that supports optimal gear operation in heavy-duty industrial applications.
Symptoms of Failure
- External oil seepage around the cover perimeter: When the ZF 4657.304.033 COVER gasket or mating surface degrades, transmission fluid may weep out, leaving visible residue on the housing exterior.
- Gear slipping under load: A compromised cover can cause internal pressure loss, leading to delayed or erratic gear engagement during high-torque operations.
- Contaminated transmission fluid: Cracks or warping in the cover allow dirt and moisture to enter the system, accelerating wear on internal components like the HOUSING REAR PART.
- Abnormal noise from the transmission case: Loose or damaged covers may vibrate against the HOUSING REAR SECTION, producing a distinct rattling sound during operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.304.033 |
| Material | Die-cast aluminum alloy with corrosion-resistant coating |
| Weight | 1.2 kg (2.65 lbs) |
| Dimensions (L x W x H) | 210 mm x 140 mm x 35 mm |
| OEM Reference | ZF 4657.304.033 |
| Mounting Hardware | Requires CAP SCREW (0636100801) and CYLINDRICAL PIN (0631306816) |
| Seal Type | Integrated gasket groove for O-ring compatibility |
Compatibility
This cover is designed for ZF WG 190 and WG 210 series transmissions, commonly found in off-highway trucks, cranes, and heavy construction equipment. It is also compatible with WG 180 and WG 200 models where the housing architecture matches the bolt pattern of the TRANSMISSION HOUSING. Always verify fitment with your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear and shaft assembly |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft and bearings |
| 4657201168 | HOUSING REAR PART | Rear section supporting output shaft assembly |
| 4657298101 | HOUSING REAR SECTION | Extended rear housing for auxiliary drives |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise housing positioning |
| 0636100801 | CAP SCREW | Fastener for securing cover to housing |
| 4656301148 | FIXING PLATE | Retaining plate for internal component stability |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil debris protection |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for high-flow circuits |
| 0636100803 | CAP SCREW | Alternate fastener for cover mounting points |
Frequently Asked Questions
Q: Can I reuse the ZF 4657.304.033 COVER if it shows minor surface corrosion?
A: No. Even light corrosion can compromise the sealing surface. Replace the cover immediately to prevent oil leaks and internal contamination.
Q: Does this cover require a separate gasket or sealant?
A: The OEM design includes an integrated gasket groove. Use a new O-ring (sold separately) and apply thread locker to the CAP SCREW fasteners for a reliable seal.
Q: How do I verify compatibility with my WG 210 transmission?
A: Check the casting number on your existing TRANSMISSION HOUSING. If it matches the bolt pattern of the 4657.304.033, the cover is compatible.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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