【Small Diameter】3" ID connector (Fits 3 inch inter diameter pipe).
【Large Diameter】4"" OD connector(Fits 4 inch outer diameter pipe).The length of 3""ID to 4""OD pipe is approx.102mm.Please measure the detailed size before purchasing it.
【Applications】Universal fit for all exhaust/turbo/intercooler/intake piping connection. (Installation should depend on the inside diameter and outside size,use for pipe to pipe (Use when one of your pipes is smaller than the other)
【Installation】Professional installation is highly recommended. welding is recommended.
【Material & Package】all exhaust pipe adapter made of high quality 304 stainless steel and has a polished finish.1PC per package.