Gen 3, 6.4 Hemi Piston Squirter Plugs. these plugs replace the 4 oil squirters in the bottom of the block. Item come complete with 4 plugs. and mounting bolts. These will reduce the amount of oil around the crankshaft, and windage in the oil pan. When using aftermarket pistons, the Oil Squirters must be removed and replace with these plugs.