Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.6 / 1.6 Ratio - Full Roller - AFR Heads - Small Block Ford (Set of 16) 12-656-5 7/16 to 7/8 in ID

7/16 to 7/8 in ID

and roller fairlead

Features an o-ring style seal to prevent water leaks

Vehicle Applications: GMC SIERRA 1500/CHEVROLET SILVERADO 1500 19-20

Jesel Pro Series Aluminum Shaft Mount Roller Rocker Arm Kit - 1.6 / 1.6 Ratio - Full Roller - AFR Heads - Small Block Ford (Set of 16) 12-656-5 7/16 to 7/8 in IDProduct Description: Rocker Arm Pro Series Shaft Mount 1. 6 1. 6 Ratio Full Roller Aluminum Natural AFR Heads Small Block Ford Set of 16 Dan Jesel realized early on that the success and demand for his high end valvetrain components was in part dependent on huge valve lifts, unheard of spring pressures and rpm that most thought was impossible. So he started on a 10 year quest to perfect the roller lifter. After nearly nine years of R&D and endless