Helps align the front and rear engine covers for proper seal function and longevity. 

Cover Alignment Tool mimics the balancer to center the cover on the front seal OR locates on the ID of the seal bore in the cover without the seal installed. 

While the Oil Pan Alignment Tool mimics the oil pan thus providing critical alignment of the oil pan and front cover.

For GM LS series engine - 4.8 5.3 5.7 6.0 LS1 LS2 LS3 LS4 LS6 LS7 L99 LS4 LS9 LSA LQ4 LQ9 L76 L92