Compatible with: 12557840 12.9 Grade Balancer Bolt is specifically designed to provide superior strength and durability for your GM Harmonic Balancer Crank Bolt needs.
Compatible with the following models: It is engineered for all Gen III and Gen IV LS engines , such as 4.8L, 5.3L, 6.0L, and 6.2L LS1, LS2, LS3, LS6, L99, LM7, LR4, LMG, LQ4, LQ9, and L96(excluding LS7/LS9) Material: LS Harmonic Balancer Bolt is made of premium quality steel with High Strength Grade 12.9, strong and reliable, not easy to break or deform, can be used for a long time.
Easy to Install: With this bolt, you can eliminate concerns about harmonic balancer issues commonly faced with standard bolts.This product is simple to use and easy to operate. It's designed for easy installation so you can quickly and easily replace your old mounting kit.
Size: Grade 12.9 Automotive Bolt, M16 x 2 Thread x 4.05 inch