CTA Tools Front Crankshaft Seal Installer Tool 3879 For 2001-2016 6.6L Duramax Diesel CTA Tools Front Crankshaft Seal Installer Tool 3879 For 2001-2016 6.6L Duramax Diesel Press fit front seal to engine block & crankshaft for proper fitment of inner & outer seal body (works w/ 3878)Services GM/ISUZU 6.6L Duramax 2001+ GMT800,... MSRP: Was: Now: $100.52 Add to Cart The item has been added