If you're looking for a top-quality piston for your 6.4 Powerstroke 2008-2010, look no further than the Mahle 224-3666WR-0.25MM Piston Set with Rings .25MM. This genuine OE quality piston offers all the great features of the original, but is sold in full sets only for your convenience. Precision engineered and extremely durable, this piston is sure to provide long-lasting performance. Don't settle for anything less than the best - trust Mahle for all your Powerstroke needs.