Original equipment on Ford GT 5.4L engine Recommended upgrade for all years 4.6L/5.4L, 4-V and 2-V engines 4 grams lighter, stiffer, and better engagement on lash adjuster over 4.6L DOHC rocker arms Lightest and strongest modular finger follower available for modular 4.6L/5.4L, 4-V and 2-V engines
