Boss uses the same hydraulic power unit for all their plows. The OE number for the complete replacement is HYD01710. If you just need the pump, reservoir, fill cap or fitting we can supply you with that also. Mill Supply carries the hydraulic unit for the Standard RT2 plows and the RT3 Smart Hitch and Smart Hitch 2. Replacement OE numbers include; HYD01694, HYD01636, HYD01563, HYD01712 and HYD04814. The popular swivel fittings and 90 degree street elbow are also listed.