This piston and ring set is compatible with A6, A7, and A8 models equipped with 2.8L FSI V6 engines using BDX, CCDA, or CCEA engine codes.The set includes pistons, piston rings, and piston pins.It matches the following OE reference numbers: 06E107065CF, 06E107066CF, 06E107066DE, 06E107066DR, and 06E198151F.Specifications include a standard cylinder bore and piston diameter of 84.5mm, piston pin diameter of 19mm with a length of 48mm, and ring thicknesses of 1.1mm (), 1.2mm (second), and 2.0mm (oil ring).This set is intended for standard engine rebuilds and replacements.