6.5L Diesel Valve cover set (both Left and Right sides included GM part# 12564565 & 12564564). Compatible with 1993-2005 6.5L Diesel engines with side-mounted and/or center-mounted turbo. Fits all 1993-2002 6.5L diesel equipped turbo Pickup trucks, Vans & H-1 Hummers. When your valve covers won't stop leaking because they are bent and / or are cutting the gasket or just because they look old and rusty, these covers will make your engine look new again! Will not fit non-turbo applications (no PCV breather on valve cover in those applications)