ZF 4651.231.008 OIL LEVEL TUBE for WG100 | OEM Genuine Part

Overview

The ZF 4651.231.008 OIL LEVEL TUBE is a precision-engineered component designed specifically for the WG 100 series transmission family. This genuine OEM part ensures accurate fluid level monitoring within the transmission sump, preventing both overfilling and underfilling conditions that can lead to premature wear. The tube integrates directly into the TRANSMISSION HOUSING assembly, providing a sealed pathway for dipstick access. As part number 4651.231.008, this oil level tube is manufactured to ZF’s exacting tolerances, guaranteeing a perfect fit and reliable service life in heavy-duty industrial applications.

Symptoms of Failure

• Transmission fluid seepage at the dipstick port: A worn or cracked oil level tube allows ATF to escape, leaving visible puddles under the vehicle or equipment. This is often the first sign of tube degradation.
• Inaccurate fluid level readings: If the tube becomes distorted or develops internal blockages, the dipstick will provide false readings, leading to overfilling or underfilling of the transmission.
• Gear engagement hesitation or slipping: When the oil level tube fails, the transmission may lose hydraulic pressure due to fluid loss, causing delayed shifts or slipping under load.
• Contaminated transmission fluid: A cracked tube can allow dirt and moisture to enter the system through the dipstick opening, accelerating internal wear on clutches and bearings.

Technical Specifications

Compatibility

This oil level tube is primarily designed for the ZF WG 100 series transmissions, including models such as WG100, WG120, and WG150. It also fits select variants of the WG180 and WG200 series when used with the appropriate HOUSING configuration. Always verify your transmission’s serial number and housing design before ordering. The tube is not compatible with older ZF Ecomat or Ecolife series without adapter modifications.

Related Components