ZF 4644.108.470 COUNTERSHAFT for WG201 | OEM Genuine Part

Overview

The ZF 4644.108.470 COUNTERSHAFT is a critical rotating component within the WG201 series transmission, responsible for transferring torque from the input shaft to the output shaft through a series of gear sets. This OEM genuine part, identified by SKU 4644.108.470, sits centrally in the transmission housing and supports the idler gears that facilitate speed and direction changes. Manufactured to ZF’s exacting tolerances, this countershaft ensures smooth power flow and minimal vibration under heavy-duty industrial loads. It works in concert with the 4644101160 TRANSMISSION HOUSING to maintain precise gear alignment and oil distribution.

Symptoms of Failure

When the ZF 4644.108.470 countershaft begins to wear, operators may notice specific performance issues. Look for these failure indicators to diagnose problems early:

• Gear grinding or whining noise – Worn bearing journals on the countershaft cause misalignment, producing a high-pitched metallic sound during gear engagement.
• Oil leaks near the housing interface – A damaged countershaft can compromise the seal with the 4644301323 TRANSMISSION HOUSING, leading to fluid seepage.
• Intermittent gear slipping – Excessive play in the countershaft allows gears to disengage under load, resulting in sudden power loss.
• Vibration during acceleration – Unbalanced or bent countershafts transmit harsh vibrations through the driveline, especially at higher RPMs.

Technical Specifications

Compatibility

This countershaft is engineered for the ZF WG201 transmission series, but it also fits select models in the WG180 and WG200 families due to shared gear architecture. It is commonly used in WG201, WG200, and WG180 variants found in construction vehicles and agricultural machinery. For proper installation, ensure the 4644301189 THREADED BUSH is correctly torqued to prevent axial play, and use a 4475280043 SCREW PLUG to seal any access ports after assembly.

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