ZF 4657.231.028 OIL LEVEL TUBE for WG190 | OEM Genuine Part

Overview

The ZF 4657.231.028 OIL LEVEL TUBE is a precision-engineered component designed specifically for the WG190 and WG210 series transmissions. This genuine OEM part serves as the primary conduit for monitoring and maintaining proper transmission fluid levels, ensuring optimal lubrication and cooling within the gearbox. Positioned vertically along the transmission housing, the oil level tube connects directly to the sump area, allowing technicians to accurately check fluid height during service intervals. The SKU 4657.231.028 is manufactured to ZF’s exacting tolerances, guaranteeing a leak-proof seal and reliable long-term performance in heavy-duty industrial applications.

Symptoms of Failure

When the ZF 4657.231.028 oil level tube begins to wear out, operators may notice several distinct failure indicators. Transmission fluid leaking from the tube connection point is the most common symptom, often appearing as drips or puddles beneath the vehicle. Inaccurate fluid level readings can occur when the tube becomes cracked or deformed, leading to overfilling or underfilling of the transmission. Gear slipping or harsh shifting may develop as incorrect fluid levels compromise hydraulic pressure. Additionally, contaminated fluid entering the transmission through a damaged tube can accelerate internal wear, requiring costly repairs to the TRANSMISSION HOUSING.

Technical Specifications

Compatibility

This genuine ZF oil level tube is engineered for use in the WG 190 Series and WG 210 Series transmissions. It is also compatible with earlier models including the WG180 and WG200, as well as the WG150 and WG160 series when retrofitted with appropriate mounting brackets. The part integrates seamlessly with the HOUS.FRONT SECT and HOUSING REAR PART assemblies. For complete transmission rebuilds, pairing this tube with the HOUSING REAR SECTION ensures proper alignment and fluid containment.

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Frequently Asked Questions

Q: How do I know if the 4657.231.028 oil level tube is the correct part for my WG190 transmission?
A: Verify your transmission model number on the identification plate. This tube is specifically designed for WG190 and WG210 series, but also fits WG180 and WG200 models. Cross-reference your existing part number with 4657.231.028 for exact compatibility.

Q: Can I replace the oil level tube without draining the transmission fluid?
A: It is strongly recommended to drain the fluid before removal to prevent spillage and contamination. The tube sits directly in the fluid path, and removing it without draining can introduce debris into the TRANSMISSION HOUSING.

Q: What torque specification should I use for the cap screws when installing this tube?
A: Use 25 Nm for the CAP SCREW (0636100801) and 30 Nm for the CAP SCREW (0636100803). Over-tightening can crack the tube or damage the sealing surface.