***LIMITED ITEM PLS ALLOW 4 BUSINESS DAYS HANDLING TO SHIP*** S&S intake manifold is O-ring type. It is a replacement for all S&S B & E 1-7/8 inch Super carburetors or can be used as a stock replacement. FITS HARLEY: 1957-1977 XL, 1965-1977 FL, 1971-1977 FX, REPLACES OEM: 27021-71A