Cadillac XTS 3.6L 2013 TO 2018 Catalytic Converter Right Side. Cadillac XTS 3.6L 2013 TO 2017 Catalytic Converter right Side heavy duty. The pipe constructed from 14 gauge tubing, with original OE style heavy duty Stainless flanges, INNER BRAID FLEX PIPE and High loaded OBDII BY DESIGN Catalytic Converter.