Overview
The ZF 4651.231.018 is a precision-engineered OEM genuine part designed specifically for the WG 110 series transmission. This component plays a critical role in the hydraulic control circuit, ensuring consistent oil pressure regulation and smooth gear engagement within the transmission assembly. As a direct replacement for the SKU 4651.231.018, this part is manufactured to ZF’s exacting tolerances, guaranteeing a perfect fit and long service life. It sits within the valve body section, where it interacts directly with the 4651101013: TRANSMISSION HOUSING to maintain structural integrity under high torque loads.
Symptoms of Failure
When the ZF 4651.231.018 begins to wear out, operators often notice distinct performance issues. Delayed or harsh shifting is a primary indicator, as the part loses its ability to modulate hydraulic pressure effectively. Another common symptom is intermittent gear slipping under load, particularly when climbing grades or carrying heavy payloads. You may also observe erratic oil pressure readings on the dashboard gauge, accompanied by visible oil seepage around the valve body area where this component seals against the 4651301032: HOUSING. If left unchecked, these symptoms can lead to complete transmission failure.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number / SKU | 4651.231.018 |
| Material | Hardened steel with corrosion-resistant coating |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 95 mm x 45 mm x 30 mm |
| OEM Reference | ZF 4651.231.018 |
| Sealing Surface Finish | Ra 0.8 µm |
Compatibility
This genuine ZF part is primarily engineered for the WG 110 series transmission, but it also shares compatibility with several other ZF models due to common hydraulic architecture. It is a direct fit for the WG 180, WG 200, and WG 250 series transmissions. Additionally, it can be used in certain WG 120 and WG 150 variants where the valve body design matches. For proper sealing during installation, always pair this part with a new 0634303928: O-RING and verify alignment with the 4651301033: HOUSING to prevent cross-threading.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101013 | TRANSMISSION HOUSING | Main structural casing for gear and valve assembly |
| 4651301032 | HOUSING | Secondary housing for hydraulic control unit |
| 0634303928 | O-RING | Seals fluid passages between mating surfaces |
| 4651301033 | HOUSING | Lower valve body housing for oil distribution |
| 4651203002 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4651303005 | SCREEN SHEET | Fine mesh filter for valve body protection |
| 0636101032 | CAP SCREW | Secures housing components with precise torque |
| 0630361028 | SEALING CAP | Prevents contamination of open ports |
| 4475280060 | SCREW PLUG | Threaded plug for pressure test points |
| 0634303312 | O-RING | Secondary seal for high-pressure circuits |
Frequently Asked Questions
Q: How do I know if the ZF 4651.231.018 needs replacement?
A: If you experience erratic shifting or oil leaks near the valve body, inspect this part for scoring or deformation. Replacing it alongside the 0634303928: O-RING is recommended.
Q: Can this part be used in a WG 200 transmission?
A: Yes, the 4651.231.018 is compatible with WG 180, WG 200, and WG 250 series transmissions, provided the valve body configuration matches.
Q: What is the typical lifespan of this OEM part?
A: Under normal operating conditions, this component lasts 3,000 to 5,000 service hours. Regular fluid changes and filter replacements using 4651203002: SCREEN SHEET can extend its life.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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