VOLKSWAGEN VW T4 TRANSPORTER (SWB & LWB) STAINLESS STEEL DUMMY DE CAT PIPE. 1.9 & 2.4 Diesel, 1.9 & 2.5TDi, 1996 > 2003. These are meticulously manufactured, brand new, DIRECT-FIT stainless steel Dummy De-Cat pipe to suit the VOLKSWAGEN T4 TRANSPORTER as shown above. All systems are jig-built and fit perfectly onto the end of the original downpipe, replacing the standard VW Cat Pipe.