Aftermarket Piston Driver for Hitachi NP35A with O-Ring Replaces 884-643, Superior Parts, Mfr#: SP 884-643

Superior Parts SP 884-643 Aftermarket Piston Driver for Hitachi NP35A with O-Ring. Aluminum is crimped into the Unilok grooves of the shaft to prevent unscrewing. Our patent-pending UNILOK piston/driver is guaranteed to never unscrew our Aftermarket Piston Driver Assemblies.