Key Technical Parameters: Impeller diameter increased to 135mm (OEM 128mm), flow rate increased to 36GPM@2800rpm Shaft core made of SCM440 alloy steel, tensile strength up to 850MPa Pre-assembled with M12x1.75 extension bolts kit, adapted to Teraflex 4-inch raised conversion Adapted to OE No. 52088401AE, passed MIL-810G vibration test. STD-810G vibration test (5-500Hz sweep).