Proform 67162 Aluminum Center Hung Float Fuel Bowl Kit with Clear Sight Plugs and Gaskets for Holley 4150 Series Lightweight aluminum center-hung fuel bowls feature sight glass Fuel float bowl kit provides easy visual float adjustment Fits Proform, Quick Fuel and Holley Double-Pumper carburetors Kit comes complete with two fuel bowls, two gaskets and anodized aluminum 5/8 x 18 inverted flare fuel inlets Pairs perfectly with Proform, Quick Fuel and Holley Double-Pumper carburetors