VW Audi 1.9 TDI EGR Cooler 038131521AJ. OEM-grade EGR cooler for VW and Audi 1.9L TDI engines (ARL/ASZ 150hp). Replaces 038131521AJ and 038131521AK. Fits VW Golf IV, Passat B5, Audi A3 8L, and Seat... Request a Quote for Europe — send your OE number, quantity and destination country for a trade price.