ZF 0730.302.122 WASHER for WG94 | OEM Genuine Part

Overview

The ZF 0730.302.122 WASHER is a precision-engineered OEM genuine component designed specifically for the WG 94 series transmission. This hardened steel washer serves as a critical load-spreading element between fasteners and transmission housing surfaces, ensuring proper clamp load distribution and preventing galling or deformation under high torque conditions. As an integral part of the TRANSMISSION HOUSING assembly, the SKU 0730.302.122 maintains the structural integrity of the gearbox by providing a stable bearing surface for bolts and plugs. Its exacting tolerances match ZF’s original manufacturing specifications, making it essential for any rebuild or repair of the WG94 gearbox.

Symptoms of Failure

• Transmission oil seepage at bolt interfaces: A worn or deformed 0730.302.122 washer can no longer seal effectively, leading to slow oil leaks around housing fasteners.
• Loose fasteners causing gear rattle: When the washer compresses beyond its elastic limit, bolts lose their preload, resulting in audible vibration or gear slipping under load.
• Housing surface damage during disassembly: A collapsed washer often fuses to the HOUSING II, making removal difficult and leaving burrs that compromise future sealing.
• Inconsistent torque readings: Technicians may notice that bolts fail to reach specified torque values due to the washer’s reduced thickness, indicating immediate replacement is necessary.

Technical Specifications

Compatibility

This washer is primarily designed for the WG 94 series transmissions, including models such as WG180, WG200, and WG240. It is also compatible with select ZF off-highway gearboxes that share the same bolt pattern and housing architecture. Always verify fitment by cross-referencing the part number against your transmission’s TYPE PLATE before installation. The 0730.302.122 is frequently used alongside the CYLINDRICAL PIN for precise alignment during reassembly.

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