---Manufactured from high quality T304 polished stainless steel ---Mandrel bent and fully TIG welded for strength and durability ---Free flowing catalyst replacement to get more from the 1.9L and 2.5L Tdi engines ---Designed to improve power and torque across the entire RPM range ---Sold for off road and track use Compatible with: ---VW Transporter T4 SWB (Short Wheel Base) 1.9TD & 2.5 TDi 1996-2003 models.