ZF 4644.303.252 QUILL SHAFT for WG200 | OEM Genuine Part

Overview

The ZF 4644.303.252 Quill Shaft is a critical torque-transfer component engineered specifically for the WG 200 Series transmission family. This OEM genuine part serves as the primary coupling element between the input drive and the planetary gear set, ensuring precise rotational alignment and load distribution under high-stress operating conditions. The SKU 4644.303.252 is manufactured to ZF’s exacting tolerances, featuring hardened steel construction to resist torsional fatigue in heavy-duty industrial applications. When installed correctly, this quill shaft works in concert with the 4460115043 HOUSING and the 4469315012 AXLE DRIVE HOUSING to maintain driveline integrity.

Symptoms of Failure

• Transmission gear slipping under load: A worn quill shaft can cause intermittent power loss, especially during acceleration or hill climbing, as the splines lose their grip on mating components.
• Metallic grinding noises from the bell housing: When the shaft surface becomes scored or pitted, operators often report a distinct grinding sound that intensifies with engine RPM.
• Oil contamination with metal particles: Advanced wear of the 4644.303.252 shaft can shed fine metallic debris into the transmission fluid, visible during routine oil changes as glitter-like particles.
• Vibration in neutral or drive: A bent or fatigued quill shaft introduces harmonic imbalance, causing noticeable chassis vibration even when the vehicle is stationary in gear.

Technical Specifications

Compatibility

This quill shaft is designed primarily for the ZF WG 200 Series, including models WG180, WG200, and WG210. It also fits select variants of the ZF Ecomat 4HP and 5HP series where the input shaft configuration matches the 24-spline interface. Always verify compatibility by cross-referencing the 0750117406 TAPER ROLLER BEARING and 0750117802 TAPERED ROLLER BEARING support dimensions, as these bearings directly interface with the quill shaft journals.

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