COMP Cams Rocker Arm FS/FW 1.6 3/8 Ultra - 1631-1

This Ultra Pro Magnum rocker is made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.6 ratio, this rocker fits Ford 289-351W with a 3/8" diameter stud.
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