MAHLE Original pistons are OE quality and have the same great OE features such as compensated ring grooves to assure proper ring loading and oil control, as well as expansion controlled designs for small fitting clearances to reduce engine noise, wear, emissions, and improve oil control. MAHLE offers pistons ready for installation with mounted piston rings, with pin and clips included for the convenience of the engine builder. PartNumber : mhl2243479WR050MM Description : Engine Piston Set w/Rings Piston oversize : 0.50 MM Piston Item Grade : OE Replacement With Piston Rings : Yes 2005-2006 Ford GT Base V8.-cc Engine Components::Piston Sets - Diesel 2005-2006 Ford GT Base V8.5409cc Engine Components::Piston Sets - Diesel 2002 Lincoln Blackwood Base V8.-cc Engine Components::Piston Sets - Diesel 1999-2004 Lincoln Navigator Base V8.-cc Engine Components::Piston Sets - Diesel