ZF 4663.303.011 OUTPUT GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4663.303.011 OUTPUT GEAR is a critical component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part transfers rotational force from the countershaft to the output flange, directly influencing vehicle propulsion and load-holding capability. Positioned at the rear of the gearbox assembly, the 4663.303.011 gear meshes with the final drive pinion and is secured within the 4663101003: HOUSING. Precision-ground teeth ensure minimal backlash and quiet operation under high torque conditions. The SKU 4663.303.011 is manufactured to ZF’s original tolerances, guaranteeing a direct replacement without modification.

Symptoms of Failure

• Whining or howling noise during acceleration: Worn gear teeth create irregular contact patterns, producing a distinct high-pitched sound that intensifies under load.
• Vibration in the driveline at highway speeds: Eroded tooth profiles cause rotational imbalance, transmitting vibration through the 0631306816: CYLINDRICAL PIN and into the chassis.
• Metallic debris in transmission fluid: Flaking or pitting on the gear surface contaminates the oil, often visible during routine drain intervals.
• Intermittent gear slipping under heavy load: Advanced wear reduces tooth engagement depth, causing momentary loss of torque transfer when climbing grades or towing.

Technical Specifications

Compatibility

This output gear is specifically designed for ZF WG100, WG130, and WG131 series transmissions. It also fits select WG180 and WG200 variants when used with the correct 4663301026: COVER and 0636100817: CAP SCREW kit. Always verify the transmission serial number before ordering. The 4663.303.011 gear is not interchangeable with earlier WG series models without corresponding housing modifications.

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