ZF 0730.001.331 WASHER for WG250 | OEM Genuine Part

Overview

The ZF 0730.001.331 WASHER is a precision-engineered OEM genuine component designed specifically for the WG 250 series transmission. This hardened steel washer functions as a critical load-spreading element between fasteners and the transmission housing, ensuring even distribution of clamping forces during assembly. Positioned at key interface points within the gearbox, part number 0730.001.331 prevents galling and maintains proper torque retention on mating surfaces. When installed alongside the TRANSMISSION HOUSING and HOUSING, this washer guarantees a secure, vibration-resistant connection that withstands extreme thermal cycling and high-torque loads common in heavy-duty industrial applications.

Symptoms of Failure

• Transmission oil seepage at bolt interfaces — A worn or deformed 0730.001.331 washer allows fastener loosening, creating micro-gaps that lead to gradual fluid loss around the COVER mounting points.
• Audible rattling or ticking from the gearbox casing — When the washer loses its compressive integrity, fasteners secured by HEXAGON SCREW components begin to vibrate loose, producing metallic noise during operation.
• Inconsistent gear engagement under load — A collapsed washer alters the stack-up height of the housing assembly, shifting bearing preload and causing delayed or rough shifting in WG250 transmissions.
• Visible corrosion or cracking around fastener heads — Failed washers trap moisture against the housing surface, accelerating galvanic corrosion that compromises structural integrity.

Technical Specifications

Compatibility

This OEM washer is primarily validated for the ZF WG 250 series transmission, but its dimensional and material specifications also make it suitable for the WG 180, WG 200, and WG 300 series gearboxes. It is commonly used in conjunction with the TRANSMISSION HOUSING and HOUSING assemblies across these models. For applications requiring additional sealing, pair this washer with the COVER SHEET (part 4646301102) or COVER SHEET (part 4646301098) to prevent contamination ingress. Always verify fitment with your specific transmission serial number before installation.

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