Fitting, Quick Connect, 203$49.95 Fitting, Quick Connect, 203 Replacement Fitting for portable regulators SKU: A0025 Category: Oxygen Tags: 203, Fitting, Quick Connect Description Description Replacement Fitting for portable regulators Related products 4110-465, Indicator, Over-Board Discharge $97.85 View product PrO2-4-2, Emergency Oxygen System for Two Users. 4 Cubic Foot bottle $615.00 View product 4110-470-24.0, Remote Pressure Line, Valve Assembly, 24″ $189.00 View product 4110-402-6, Outlet, PB2 $199.00 View product