GM LS Rocker Arm Bolts 4.8L 5.3L 6.0L 6.2L LS1 LS2 LS3 LS6 LQ4 LQ9 LY5 LY6 Set of 16The General Motors 12558815 and 12560961 Rocker Arm Bolts are designed for LS Series engines including 4. 8L 5. 3L 5. 7L 6. 0L and 6. 2L variants. These bolts essential for securing the rocker arm pivot support ensure optimal engine performance. They are compatible with a wide array of LS engine models such as LS1 LS2 LS3 LS6 LQ4 LQ9 LY5 and LY6. The parts are durable designed to withstand the rigors of high performance applications and have been