ZF 4644.353.012 AXLE for WG181 | OEM Genuine Part

Overview

The ZF 4644.353.012 AXLE for WG181 is a precision-engineered differential component designed to manage torque distribution within the final drive assembly of heavy-duty ZF transmissions. This OEM genuine part, identified by SKU 4644.353.012, sits at the core of the axle housing, transferring rotational force from the driveshaft to the wheel hubs while accommodating speed differences during turns. Constructed from hardened alloy steel, it ensures long-term durability under extreme load conditions. For proper sealing and alignment, this axle integrates directly with the TRANSMISSION HOUSING and the HOUSING to maintain structural integrity.

Symptoms of Failure

• Persistent oil leaks around the axle seal: Worn bearing surfaces or a cracked axle shaft can cause transmission fluid to seep past the seal, leaving puddles under the vehicle. This is a common long-tail search query for “ZF WG181 axle oil leak repair.”
• Gear slipping or clunking during acceleration: When the axle splines wear down, torque transfer becomes inconsistent, leading to sudden jerks or a slipping sensation when shifting from neutral to drive.
• Vibration at highway speeds: A bent or unbalanced 4644.353.012 axle generates rhythmic shaking that intensifies with speed, often misdiagnosed as tire imbalance. This symptom is frequently searched as “ZF transmission vibration after axle replacement.”
• Abnormal whining noise from the differential: Excessive play in the axle bearings produces a high-pitched whine during deceleration, indicating imminent failure of the THREADED BUSH that secures the assembly.

Technical Specifications

Compatibility

This axle is specifically engineered for the ZF WG181 transmission series, but it also fits select models in the WG180 and WG200 families due to shared differential architecture. It is commonly used in municipal buses, construction loaders, and agricultural tractors where the TYPE PLATE confirms the WG181 designation. Always verify the axle spline count and housing bore diameter against your unit before installation.

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