This 8-piece piston and ring kit is designed for 4.8L V8 (4806cc) naturally aspirated engines used in select S and GTS models (including chassis codes 955, 957, 970) manufactured between 2007 and 2019.The set includes 8 pistons and matching rings with STD 0.00 specification, cylinder bore diameter of 96.00mm, wrist pin diameter of 23mm, and wrist pin length of 58mm.Ring thicknesses are: first ring 1.2mm, second ring 1.5mm, third ring 2.0mm.Compatible with engine codes M48.01, M48.02, M48.20, M48.40, MCX.PA, and MCX.RA.This kit serves as a replacement for multiple OE numbers including 94810304825, 94810304827, 94810304828, 94810305821, 94810305822, 94810304854, 94810304855, 94810304857, 94810304858, 94810305851, 94810305852, 94810304725, 94810304727, 94810304728, 94810305721, 94810305722, 94810304754, 94810304755, 94810304757, 94810304758, 94810305751, and 94810305752.