LSX LS1 LS2 LS3 LS6 LQ4 LQ9 Harmonic Balancer Pulley Installation Tool #14027T Often a must have for Engine Swaps 1 Hardened M16 Hex Nut When you need to change or upgrade your Harmonic Balancer 2 Hardened Washers 1 Hardened M16-2.0 Threaded Rod