Engine Parts Piston Rings Set designed to fit 2.0 L L4 Diesel engines with B47D20B and B47D20A engine codes.Compatible with models including 120d, 318d, 420d, 520d, X1, X2, X3, F20, F25, and F30.Also fits select and Active Tourer, Gran Tourer, CLUBMAN, Convertible, and COUNTRYMAN models equipped with the B47D20A or B47D20B engine.Includes one complete piston rings set.Specifications: standard size 84.0 mm bore diameter; ring dimensions 1.50 mm x 1.50 mm x 2.0 mm.OE number reference: 11258513601.