ZF 4642.308.542 SPUR GEAR for WG150 | OEM Genuine Part

Overview

The ZF 4642.308.542 SPUR GEAR is a critical power transmission component engineered specifically for the WG 150 series transmission. This OEM genuine part functions as a precision-machined gear that transfers rotational force between parallel shafts within the gear train, ensuring smooth torque delivery and consistent output speed. Located in the intermediate shaft assembly, the SKU 4642.308.542 directly engages with adjacent gears to maintain drivetrain integrity under heavy loads. Its hardened tooth profile minimizes wear during continuous operation, making it essential for maintaining the transmission’s mechanical efficiency in industrial applications.

Symptoms of Failure

• Whining or grinding noise during gear engagement: Worn teeth on the spur gear produce audible metallic sounds, especially under load, indicating surface fatigue or pitting.
• Intermittent power loss or gear slipping: As the gear profile degrades, the transmission may fail to maintain consistent torque transfer, causing unexpected disengagement or hesitation.
• Metallic debris in transmission fluid: Flaking or chipped gear teeth contaminate the oil, visible as glitter-like particles during routine fluid checks.
• Vibration through the driveline: Uneven tooth wear creates rotational imbalance, transmitting noticeable tremors to the housing and output shaft.

Technical Specifications

Compatibility

This spur gear is primarily designed for the ZF WG 150 series transmission. Based on its module and tooth count, it also fits the WG 180 and WG 200 models when used in the same intermediate shaft position. Compatibility extends to select WG 120 variants with identical gear ratios. Always verify the gear’s tooth profile and shaft bore dimensions against your transmission’s service manual before installation.

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