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The drive shaft flange AZ9114314051 is a heavy-duty drivetrain component compatible with HOWO, Sinotruk, FOTON, SHAANXI (SHACMAN), and FAW trucks. Based on our field experience, this flange is designed to bridge the connection between the propeller shaft and the axle differential. Precision-machined from high-tensile forged steel, the AZ9114314051 features hardened splines and a polished seal surface to handle high torque output and prevent oil leakage in demanding haulage environments. Mechanic's Expert Advice: A grooved or pitted seal surface on the AZ9114314051 flange is the leading cause of persistent differential oil leaks. During a rebuild, always inspect the internal splines for any signs of "slop" or mechanical wear. Installation Tip: When installing a new flange, always use a fresh pinion seal and a new locking nut. Proper torque calibration is essential to maintain the correct bearing preload within the differential housing. A balanced and securely fastened flange prevents destructive vibrations that can lead to catastrophic failure of the universal joints and transmission bearings. We specialize in spare parts for major heavy machinery brands: CHANGLIN, Sinomach, XCMG, Everun, HOWO, SITRAK, FAW, SEM, SDLG, LiuGong, FOTON, LINGONG, SHANTUI, CHENGGONG, XGMA.