Engine Gasket Seal Kit for M177 4.0T engine overhaul, compatible with part numbers 1770100400 and 1770103502.Designed for use with M176 and M177 4.0L V8 Biturbo engines featuring a cylinder bore of Φ83mm (STD).This gasket seal set serves as a direct replacement for worn or damaged components during engine rebuilding.The kit includes multiple seals and gaskets necessary for a complete engine overhaul.Components consist of 2 cylinder gaskets, 1 curved front oil seal, 1 curved oil seal, and a full set of additional gaskets as required for proper engine reassembly.Materials used include plastic, rubber, and steel to functional integrity under operating conditions.Each component is manufactured to precise specifications for accurate fitment, supporting performance after installation.Intended for vehicles equipped with the specified engine types, including select models with 4.0L V8 Biturbo powertrains.Proper fitment should be verified before purchase based on engine model and compatibility.