ZF 0737.502.169 SLOTTED NUT for WG200 | OEM Genuine Part

Overview

The ZF 0737.502.169 SLOTTED NUT is a precision-engineered locking component specifically designed for the WG200 series transmission. This OEM genuine part secures critical rotating assemblies within the gearbox, ensuring that bearings and gears maintain their correct axial position under high torque and vibration. The slotted design allows for positive locking with a cotter pin or tab washer, preventing any rotational loosening during operation. The SKU 0737.502.169 is a direct replacement for the original factory-installed nut, guaranteeing exact thread pitch and load rating for your ZF drivetrain.

Symptoms of Failure

When the ZF 0737.502.169 SLOTTED NUT begins to wear or loses its clamping force, operators will notice distinct performance issues. Transmission oil leaks at the output shaft often occur as the nut loosens, allowing the seal to shift out of its bore. Abnormal gear rumbling or whining noise during coasting indicates that the bearing preload has been lost due to nut backing off. Intermittent gear slipping under load can happen when the main shaft nut allows the gear cluster to move axially. Metal debris in the transmission oil filter is a late-stage symptom, signaling that the nut has damaged the shaft threads or adjacent components.

Technical Specifications

Compatibility

This slotted nut is primarily engineered for the ZF WG200 series transmissions, including the WG180, WG200, and WG210 variants. It is commonly found on the main shaft output flange assembly and the planetary carrier retention point. The 0737.502.169 also fits select ZF Ecolife and Ecomid models that share the same shaft diameter and thread pitch. Always verify your transmission serial number against the OEM parts catalog before installation.

Related Components

When servicing the ZF 0737.502.169 SLOTTED NUT, it is standard practice to inspect and replace associated hardware. The 4460165051 CONSOLE and 4460368311 CONSOLE provide the mounting structure for the valve body and shift mechanism. The 0636011429 HEXAGON SCREW secures the console to the transmission housing, while the 0730100365 WASHER distributes load under the screw head. Below is a complete list of parts that are often ordered together with this slotted nut.