ZF 4644.311.083 AXLE for WG181 | OEM Genuine Part

Overview

The ZF 4644.311.083 AXLE is a precision-engineered load-bearing component specifically designed for the WG181 series transmission. This OEM genuine part functions as the central rotational axis for planetary gear sets, ensuring correct gear alignment and torque distribution within the differential assembly. As a critical element of the drivetrain, the axle supports the sun gears and planetary carriers, directly influencing shift quality and power delivery. The SKU 4644.311.083 is manufactured to ZF’s original factory tolerances, guaranteeing a direct fit and long service life when paired with the TRANSMISSION HOUSING and the HOUSING assembly.

Symptoms of Failure

• Erratic gear engagement or slipping under load: A worn axle can cause misalignment of the planetary gears, leading to delayed or rough shifting, particularly in higher torque ranges.
• Metallic grinding noise from the transmission sump: As the axle surface wears, metal particles may shed into the oil, producing a distinct grinding sound during acceleration or deceleration.
• Oil contamination with fine metallic debris: Fatigue cracks on the axle shaft allow material to flake off, often visible as silver glitter in the transmission fluid during routine checks.
• Excessive axial play in the output shaft: A degraded axle can no longer maintain proper end-play, resulting in noticeable vibration or clunking when shifting between forward and reverse.

Technical Specifications

Compatibility

This axle is primarily engineered for the ZF WG181 series, but it also shares dimensional characteristics with the WG180 and WG200 transmission families. It is commonly used in off-highway vehicles, construction equipment, and heavy-duty trucks requiring a robust planetary axle. For proper installation, always verify the condition of the THREADED BUSH and the TYPE PLATE to confirm model revision compatibility.

Related Components