ZF 4644.231.172 OIL LEVEL TUBE for WG201 | OEM Genuine Part

Overview

The ZF 4644.231.172 OIL LEVEL TUBE is a precision-engineered component designed specifically for the WG 201 series transmission. This OEM genuine part serves as the critical conduit for monitoring and maintaining proper fluid levels within the transmission sump. Positioned along the side of the main casing, the tube interfaces directly with the TRANSMISSION HOUSING (4644101160) and the TRANSMISSION HOUSING (4644301323) to ensure accurate oil level readings during service intervals. The SKU 4644.231.172 is manufactured to ZF’s exacting tolerances, guaranteeing a leak-free seal and reliable performance in heavy-duty industrial applications.

Symptoms of Failure

• Visible oil leaks around the dipstick or tube base: A worn or cracked oil level tube allows transmission fluid to escape, leading to low oil levels and potential gear slipping.
• Inaccurate oil level readings: When the tube degrades, the dipstick may show false fluid levels, causing overfilling or underfilling that stresses the transmission.
• Contaminated fluid entering the transmission: A damaged tube can allow dirt and moisture past the seal, accelerating wear on internal components like the THREADED BUSH (4644301189).
• Erratic shifting or slipping under load: Low fluid from a leaking tube reduces hydraulic pressure, resulting in delayed engagement or gear slippage during operation.

Technical Specifications

Compatibility

This oil level tube is engineered for the ZF WG 201 series transmissions, commonly found in off-highway vehicles, construction equipment, and industrial machinery. It is also compatible with the WG180, WG200, and WG210 series models that share the same housing architecture. For proper installation, ensure the SCREW PLUG (4475280043) is torqued to specification to secure the tube assembly.

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