ZF 4644.231.135 OIL LEVEL TUBE for WG200 | OEM Genuine Part

Overview

The ZF 4644.231.135 OIL LEVEL TUBE is a precision-engineered component designed specifically for the WG200 series transmission. This genuine OEM part ensures accurate fluid level measurement, which is critical for maintaining proper lubrication and cooling within the transmission assembly. Positioned along the side of the main housing, the tube provides a direct conduit for dipstick access to the oil sump. The SKU 4644.231.135 is manufactured to ZF’s exacting tolerances, guaranteeing a leak-free seal and reliable long-term performance in heavy-duty industrial applications.

Symptoms of Failure

• Transmission fluid leaking from the dipstick area: A cracked or corroded oil level tube can cause visible oil seepage around the top of the tube or near the base connection, leading to low fluid levels and potential gear damage.
• Inaccurate oil level readings: When the tube becomes blocked or deformed, the dipstick may not seat properly, giving false readings that can result in overfilling or underfilling the transmission.
• Gear slipping or harsh shifting due to low oil: A compromised tube allows fluid to escape, reducing hydraulic pressure. This often manifests as delayed engagement or slipping during load changes.
• Contaminated transmission fluid: A broken tube can allow dirt and moisture to enter the transmission through the dipstick port, accelerating wear on internal components like the 0750117406 TAPER ROLLER BEARING.

Technical Specifications

Compatibility

This oil level tube is engineered for the ZF WG200 series transmissions, including models WG180, WG200, and WG210. It is a direct replacement for units requiring the 4644.231.135 part number. When servicing the tube, always inspect the adjacent 4460115043 HOUSING for cracks, and verify the 4469315012 AXLE DRIVE HOUSING for proper alignment. For complete bearing replacement, pair this tube with the 0750117802 TAPERED ROLLER BEARING to ensure smooth shaft rotation.

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