BMW/Mini B37/B47 Diesel EGR Cooler. Premium EGR cooler for BMW and Mini B37/B47 diesel engines (2013-2020). Covers 1 Series, 2 Series, 3 Series, 5 Series, X1, X3, X4, X5 and Mini. OE number 117... Request a Quote for Europe — send your OE number, quantity and destination country for a trade price.