ZF 0737.502.103 SLOTTED NUT | OEM Genuine Part

Overview

The ZF 0737.502.103 SLOTTED NUT is a precision-engineered OEM genuine component designed to secure critical rotating assemblies within ZF heavy-duty transmissions. This slotted nut, identified by SKU 0737.502.103, is typically installed on the output shaft or countershaft to lock bearings, gears, and clutch packs in place, preventing axial movement under high torque loads. In construction machinery transmissions, it works in conjunction with the 2094101012: TRANSMISSION HOUSING to maintain proper gear mesh alignment. Without this nut, the entire drivetrain assembly risks loosening, leading to catastrophic internal damage.

Symptoms of Failure

When the 0737.502.103 slotted nut wears or loosens, operators may notice these specific failure indicators:

• Transmission oil leaks at the output shaft seal – A loose nut allows shaft play, damaging the seal and causing fluid loss.
• Gear slipping under load – Axial movement of the gear cluster disrupts engagement, especially during excavation or grading.
• Unusual clunking or vibration from the transmission housing – Worn threads or a deformed nut create backlash between the shaft and the 2094301036: HOUSING.
• Difficulty shifting into gear – Misalignment caused by a failing nut can bind shift forks or synchronizers.

Technical Specifications

Compatibility

This slotted nut is engineered for ZF power shift transmissions commonly used in construction machinery. It is compatible with the following ZF models: WG180, WG200, WG210, and WG250. It also fits select 4WG-200 and 6WG-250 series. Always verify thread pitch and slot width against the mating shaft. For complete assembly, pair this nut with the 2094298057: HOUSING and the 2094301071: COVER to ensure proper sealing and alignment.

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