ZF 4644.304.015 SUPPORTING RING for WG200 | OEM Genuine Part

Overview

The ZF 4644.304.015 SUPPORTING RING is a precision-engineered component designed for the WG 200 series transmission. This OEM genuine part functions as a critical load-bearing element within the planetary gearset assembly, ensuring correct axial positioning and rotational stability of internal shafts. The SKU 4644.304.015 is manufactured to ZF’s exacting tolerances to prevent metal-on-metal contact between rotating and stationary components. When installed correctly, this supporting ring maintains the necessary clearance for smooth power flow through the transmission’s torque path.

Symptoms of Failure

When the ZF 4644.304.015 supporting ring wears beyond specification, operators typically notice these distinct failure indicators:

• Abnormal gear whine or grinding noise during acceleration or deceleration, particularly in lower gear ranges
• Gradual oil pressure loss in the main circuit, often accompanied by erratic shift timing
• Metallic debris in the transmission fluid during routine oil changes, indicating surface fatigue of the ring
• Vibration through the driveline when the transmission is under load, especially at highway speeds

Technical Specifications

Compatibility

This supporting ring is primarily specified for the ZF WG200 series transmissions, including models WG180, WG200, and WG210. It also fits select WG150 variants with the same planetary carrier design. The part interfaces directly with the 4644101164: TRANSMISSION HOUSING and the 4644301371: TRANSMISSION HOUSING to maintain concentric alignment. For proper identification, always cross-reference the 0730365067: TYPE PLATE on your unit before ordering. The ring is secured using the 0631311009: GROOVED STUD to prevent rotation during operation.

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