Overview
The ZF 4651.122.004 is an OEM genuine component engineered specifically for the WG 110 Series transmission. This precision-machined part plays a critical role in managing hydraulic fluid flow and maintaining internal pressure stability within the gearbox assembly. As a direct-fit replacement, the SKU 4651.122.004 ensures that your transmission retains its factory-specified tolerances and operational efficiency. When installed alongside the 4651101013: TRANSMISSION HOUSING, it forms a sealed unit that prevents contamination and supports smooth gear engagement.
Symptoms of Failure
When the 4651.122.004 component begins to degrade, operators often notice specific performance issues. Oil leaks around the transmission housing are a primary indicator, particularly near the mounting interface. You may also experience intermittent gear slipping under load, as internal pressure regulation becomes inconsistent. Another common symptom is erratic shift timing, where the transmission hesitates or harshly engages between gears. Finally, visible metal debris in the transmission fluid can signal that this part has suffered structural wear, requiring immediate replacement to avoid cascading damage.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4651.122.004 |
| Material | High-Grade Aluminum Alloy / Steel |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 85 mm x 45 mm |
| OEM Reference | ZF 4651.122.004 |
| Surface Treatment | Anodized / Corrosion-Resistant Coating |
| Sealing Type | Matched with 0634303928: O-RING |
Compatibility
This genuine ZF part is primarily designed for the WG 110 Series transmission family. It is also compatible with the WG 180 and WG 200 models that share the same hydraulic control architecture. For proper installation, ensure the mating surfaces are clean and that the 4651301032: HOUSING and 4651301033: HOUSING components are free from cracks or warping. Always replace the corresponding O-rings and seals to maintain system integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101013 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4651301032 | HOUSING | Secondary housing for valve body support |
| 0634303928 | O-RING | Seals fluid passages between components |
| 4651301033 | HOUSING | Lower housing for oil distribution |
| 4651203002 | SCREEN SHEET | Filters coarse debris from hydraulic fluid |
| 4651303005 | SCREEN SHEET | Fine mesh filter for valve body protection |
| 0636101032 | CAP SCREW | Fastens housing sections with precise torque |
| 0630361028 | SEALING CAP | Closes unused hydraulic ports |
| 4475280060 | SCREW PLUG | Seals threaded access points |
| 0634303312 | O-RING | Secondary seal for high-pressure circuits |
Frequently Asked Questions
Q: Can I install the 4651.122.004 without replacing the O-rings?
A: It is strongly recommended to replace all sealing elements, including the 0634303928: O-RING, during installation. Reusing old seals can lead to immediate fluid leaks and pressure loss.
Q: How do I know if this part is failing in my WG 110 transmission?
A: Watch for gradual oil seepage around the housing joint, delayed engagement when shifting from neutral to drive, and a whining noise during acceleration. These are classic indicators that the 4651.122.004 has lost its sealing integrity.
Q: Is this part interchangeable with any aftermarket alternatives?
A: Only the OEM genuine ZF 4651.122.004 guarantees exact fitment and material specifications. Aftermarket copies often have dimensional variances that can compromise the alignment with the 4651301032: HOUSING and cause premature wear.
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Phone: +86 158 2286 3467 |
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