COMP Cams Rocker Arms 1619-1 The Ultra Pro Magnum Roller Rocker Arms for Ford 3.8L V6 applications take stud mount rocker performance, stability and value to a whole new level. These rocker arms feature a 3/8" stud diameter and 1.7 ratio. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring oversized trunions, precision-sorted needle bearings and hardened roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050" locks without clearance or fitment issues. Rocker Arm, Ford V6 1.7 3/8 UL RA Pro Mag COMP Cams Ultra Pro Magnum Roller Rocker Arm, 1.6 Ratio, 3/8" Stud Diameter, 3.8L V6 Ford, Single Piece COMP Cams Rocker Arm Ford V6 1.7 3/8 Ul

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