Overview
The ZF 4642.231.133 OIL LEVEL TUBE is a precision-engineered component designed for the WG150 transmission series. This OEM genuine part ensures accurate oil level measurement, which is critical for maintaining proper lubrication and cooling within the gearbox. Positioned on the transmission housing, the tube provides a direct conduit for dipstick access, allowing operators to verify fluid levels quickly. The SKU 4642.231.133 is manufactured to ZF’s exacting tolerances, guaranteeing a secure fit and reliable performance in heavy-duty industrial applications. When paired with a robust TRANSMISSION HOUSING, this oil level tube forms an essential part of the fluid management system, preventing contamination and ensuring consistent hydraulic pressure.
Symptoms of Failure
When the ZF 4642.231.133 OIL LEVEL TUBE wears out, operators may notice several distinct failure indicators. Oil leaks around the tube base are a primary symptom, often caused by cracked plastic or degraded seals, leading to fluid loss and potential transmission overheating. Inaccurate dipstick readings occur when the tube becomes bent or clogged, making it difficult to gauge proper oil levels. Gear slipping under load can develop if low oil levels go undetected, resulting in reduced torque transfer. Additionally, visible cracks or brittleness on the tube surface, especially in cold environments, signal imminent failure. Addressing these issues promptly with the OEM part 4642.231.133 helps avoid costly repairs to the TRANSMISSION HOUSING.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4642.231.133 |
| Material | Reinforced Nylon / PA66 |
| Length | 210 mm (approx.) |
| Outer Diameter | 18 mm |
| Weight | 0.08 kg |
| OEM Reference | ZF 4642.231.133 |
| Seal Type | Integrated O-ring |
Compatibility
This oil level tube is specifically engineered for the ZF WG150 transmission series, but it also fits select models in the WG family. Compatible transmissions include the WG150, WG180, and WG200 series, where the mounting flange and dipstick interface are identical. It is not recommended for older WG120 units without verification of the housing port. For proper installation, ensure the TYPE PLATE on your transmission matches the WG150 designation. The tube secures via a GROOVED STUD, which must be torqued to factory specifications to prevent leaks.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4642301205 | TRANSMISSION HOUSING | Alternate housing variant for WG series |
| 0730365125 | TYPE PLATE | Identification plate with model and serial |
| 0631311009 | GROOVED STUD | Fastener for oil level tube mounting |
| 4642301168 | SCREEN SHEET | Filter mesh for oil intake protection |
| 4642301169 | SCREEN SHEET | Secondary filter screen for debris |
| 0636100621 | HEXAGON SCREW | Bolt for securing housing components |
| 4642301186 | SCREEN SHEET | Fine mesh screen for hydraulic circuit |
| 4644106324 | SHIFT SYSTEM | Gear selection mechanism assembly |
| 4644306598 | PLATE | Cover plate for access port |
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