This ZF 1372 304 042 main shaft washer is compatible with 12AS series 12-speed AMT transmissions.
Precision made of high-hardness cold-rolled steel plate, it features a flat, even surface with consistent thickness, high compressive strength, and resistance to crushing and deformation.
Treated with tempering, rust prevention and hardening, it withstands long-term immersion in transmission oil, high temperatures and oxidation, and is not prone to rusting or cracking under prolonged operation.
Made to OEM standard inner and outer diameters with precise fitting clearance, it effectively shares axial pressure, buffers transmission impact, and reduces friction loss between the main shaft and gears.
It delivers stable load capacity and outstanding durability, with easy installation and accurate alignment. It is an essential precision part for the maintenance and calibration of transmission main shaft assemblies.
