1372 304 044 Main Shaft Washer

1372 304 044 Main Shaft Washer

1372 304 044 Main Shaft Washer

Part No. 1372 304 044 Main Shaft Washer is fitted at the connecting position of the mainshaft gears and bearings inside the transmission. It plays a key role in isolation and limiting, evenly distributing axial pressure and calibrating assembly clearance.
With exquisite craftsmanship and stable material structure, the washer features great fatigue resistance and tolerance to alternating loads, maintaining stable shape and tight fit without deformation or looseness during high‑speed operation.
It precisely matches the original mounting dimensions and is suitable for 12‑speed AMT transmissions of heavy‑duty trucks and large coaches, including ZF 12AS2330, 12AS2530 and 12AS2730.
It effectively improves faults such as mainshaft axial play, abnormal end face wear of components and transmission abnormal noise. After installation, the transmission operates more smoothly, effectively protecting the internal transmission assemblies and extending the overall service life of the gearbox.
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ZF 1372 304 044 Main Shaft Washer is compatible with 12AS series 12-speed AMT transmissions.

Precision stamped from high-grade alloy steel sheet, it features a burr-free flat surface with thickness tolerance strictly compliant with OEM standards. It delivers excellent compression and impact resistance, resisting denting, warping and deformation under long-term heavy load.

The surface is treated with hardening, rust prevention and oil resistance, withstanding high-temperature transmission fluid immersion and effectively avoiding corrosion, rust and aging failure.
With accurate positioning dimensions and tight mounting fit, it precisely adjusts the main shaft axial clearance, buffers transmission impact force, and reduces end face friction loss. Featuring genuine OEM quality and long service life, it is an essential precision gasket part for transmission repair and assembly.

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