LSXCELERATION

LSXceleration LS Harmonic Balancer Bolt 22-57840 (Like GM # 12557840) For GM Gen III/IV 4.8L, 5.3L, 5.7L, 6.0L, 6.2L.  Will not fit LS7/LS9 w/ dry sump.

GM LS Harmonic Balancer Installation Tool 64-1001