LS LS1 LS2 LS6 // GM 4.8L 5.3L 5.7L 6.0L Rocker Arms with Stands and Bolts OEMCondition: REBUILDABLE CORE USED The GM 12552203 Rocker Arm and Stand Kit includes both the GM 10214664 Rocker Arm and the GM 12552203 Rocker Arm Stand, offering a complete solution for enhancing the performance and longevity of your GM engine. Engineered for LS1, LS2, and LS6 style heads as well as LQ4, LQ9, and LM7 engines, this kit supports engine sizes 4. 8L, 5. 3L, 5. 7L, and 6. 0L. The GM 12552203 Rocker Arm is crafted from high quality