Water swirl pots are designed to remove air from the vehicles cooling system increasing the cooling efficiency. They are an ideal addition for competition or highly tuned vehicles which generally run hotter. These OBP swirl pots (195mm x 65mm OD) are manufactured in the UK and feature swaged connectors which accept 32mm bore coolant hoses.Removed unwanted air from the engines cooling systemImproved the efficiency of the cooling systemUniversal fittingAccepts coolant hoses with 32mm internal diameterAvailable Options:Option 1: Bottom inlet, side outlet, top bleed pipe (8mm O/D)Option 2: Side inlet, side outlet, top bleed pipe (8mm O/D)Option 3: Bottom inlet, side outlet, top filler neck to accept standard size radiator cap (not included) with 10mm O/D overflow pipe.