Master Carburetor Restoration Kit, 420 Sedan If you're planning to restore your 420's carburetors, look no further than this kit. Kits include our USA-made rebuild kits, overflow pipes, our Nitrophyl floats, metering needles, Grose-type jets, dampers, damper springs, float filters, insulation blocks, dashpot and float chamber screws, damper oil and starting carburetor washers -- everything required to restore your carburetors. Save ten percent off individual prices. One kit required per car. This kit will not show as being in stock but no worries; it is assembled from individual pieces when ordered.