1958 Pontiac 370cid Tri Power With Brass Fittings 3/8" & 5/16" Pump To Carburetor Line 8pc Aluminum Tube These preformed engine lines will replace the original pump to carburetor fuel lines and run from the fuel pump to the carburetor following factory routing. Our replacement lines are engineered from factory original lines, CNC manufactured for precision, and include the correct fittings and flares (where equipped).