Engine Pro 07-13702-16 Chevy GM LS Rocker Arm Bronze Bushing Trunion Kit with BoltsENGINE PRO LS CHEVROLET BUSHING TRUNNION KITS These new bushing style LS Chevy trunnion kits for factory LS rocker arms are now available. The bushing design provides superior lubrication to the trunnion while also providing maximum load capability. Our innovative design prevents premature failures caused by the weak O. E. or replacement needle bearings, eliminating the possibility of debris from a bearing failure that can cause severe engine damage.