ZF 4616.323.004 PLANETARY GEAR for WG 65 | OEM Genuine Part

Overview

The ZF 4616.323.004 PLANETARY GEAR is a critical torque-multiplying component engineered specifically for the WG 65 series transmission. This OEM genuine part sits within the planetary gearset assembly, directly transferring rotational force from the turbine shaft to the output carrier. The SKU 4616.323.004 ensures precise gear meshing and load distribution, making it indispensable for heavy-duty driveline performance. When paired with a robust TRANSMISSION HOUSING, this gear maintains structural alignment under extreme stress.

Symptoms of Failure

• Erratic gear slipping under load: A worn planetary gear causes intermittent power loss during acceleration, often misdiagnosed as a clutch issue.
• Metallic grinding noise from the transmission sump: Pitted or chipped gear teeth produce a distinct whining or grinding sound, especially in lower gears.
• Contaminated transmission fluid with metallic debris: Flakes or silver particles in the oil indicate advanced gear wear, requiring immediate inspection.
• Delayed engagement or harsh shifting: Excessive backlash from a degraded planetary gear disrupts hydraulic timing, leading to jarring gear changes.

Technical Specifications

Compatibility

This planetary gear is a direct fit for the ZF WG 65 series transmission. Based on its design and tooth geometry, it also serves as a replacement in the WG180, WG200, and WG250 models where planetary gearset dimensions match. Always verify the sun gear spline count and carrier bore diameter before installation. For secure mounting, use the HEXAGON SCREW (0636011038) for the carrier bolts, the HEXAGON SCREW (0636011118) for the ring gear flange, and the HEXAGON SCREW (0636016015) for the output shaft retention.

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