The Diamond Eye stainless steel exhaust adapter converts a 4.00-inch inner diameter (4-inch tube fits inside) to a 4-13/16-inch outer diameter, compatible with part numbers 165057 and 165058. It is an adapter component intended to join or adapt tubing sizes as specified by the listed part references and dimensions in the product description.
Diamond Eye ADAPTER 4in ID (4in TB FITS INSIDE) TO 4-13/16in OD SS FOR S 165057 & 165058