Aquascape 91065 Discharge Fitting Kit for AquaSurge 2000/3000/4000/5000 and 2000-4000/4000-8000 GPH Pump Replacement discharge fitting for Aquascape water pumps For use with AquaSurge 2000 pump # 91017 (G2 Year 2012 - Present), AquaSurge 3000 pump # 91018 (G2 Year 2012 - Present), AquaSurge 4000 pump # 91019 (G2 Year 2012 - Present), AquaSurge 5000 pump # 91020 (G2 Year 2012 - Present) Also, used for AquaSurge PRO 2000-4000 pump # 45009 (G2 Year 2012 - Present), and AquaSurge PRO 2000-4000 pump # 45010 (G2 Year 2012 - Present)