This is a POLISHED REGROUND GM LS Series 5.3L / 6.0L / 6.2L Crankshaft KIT. 

* Cast # : 12552216 
* Description :  2007-Up Stock  Truck / SUV 5.3, 6.0 / 6.2 58X (reluctor ring) Crankshaft Kit.
* Specs : Polished Standard Size Main /  Rod Journals
58 Tooth Reluctor / Exciter Ring                 * Information : Main and Rod Bearings Included 

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