EGR Cooler replacement for OE 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. Stainless steel construction, pressure tested before shipping. SUMEC part SMC-LQ-88, fits VW/Audi. Verified OE fitment — request a fast quote.