VW Audi 2.0 TDI EGR Cooler 03G131521R. OEM-grade EGR cooler for VW and Audi 2.0L TDI engines (BKD/BMM). Replaces 03G131521R and 03G131521S. Fits VW Golf V, Passat B6, Audi A3/A4, and Seat models. ... Request a Quote for Europe — send your OE number, quantity and destination country for a trade price.