ZF 0730.104.723 WASHER for WG100 | OEM Genuine Part

Overview

The ZF 0730.104.723 WASHER is a precision-engineered OEM genuine component designed specifically for the WG 100 series transmission. This hardened steel washer serves as a critical load-spreading interface between fasteners and transmission housing surfaces, ensuring proper clamping force distribution during assembly. Located within the main gear train assembly, this washer (SKU: 0730.104.723) prevents galling and deformation when securing the TRANSMISSION HOUSING and adjacent HOUSING components. Its precise thickness tolerance is essential for maintaining correct axial clearances in the WG100 planetary gear set.

Symptoms of Failure

• Transmission fluid seepage at housing joints – A worn or crushed 0730.104.723 washer allows fastener loosening, creating micro-gaps that cause oil weeping around the O-RING sealing surfaces.
• Abnormal gear engagement noise – When this washer loses its original thickness, axial play increases in the shaft assembly, producing a distinct clattering sound during torque converter lockup.
• Recurring fastener torque loss – If the washer deforms plastically, bolts securing the HOUSING will repeatedly loosen, requiring over-torquing to maintain seal integrity.
• Metallic debris in transmission fluid – Surface spalling of a fatigued washer introduces steel particles that contaminate the hydraulic circuit.

Technical Specifications

Compatibility

This OEM washer is primarily designed for the ZF WG100 transmission series, but it also fits the WG180 and WG200 models due to shared housing bolt patterns. It is used in both on-highway truck applications and off-highway equipment where the WG series is installed. Always verify compatibility with your specific transmission serial number, as the washer interfaces directly with the TRANSMISSION HOUSING and HOUSING assemblies.

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