Product Introduction The A8VO107 hydraulic main piston pump is the core power component of the excavator hydraulic system, compatible with the E320B model. It supplies pressure oil for boom, arm, bucket, and travel movements. Manufactured with precise processing, it delivers stable output pressure and excellent wear resistance, making it an ideal choice for machine overhaul and replacement. Part Numbers: A8VO107, 123-2233 Common Faults Weak digging force and slow working