Genuine TSP Texas Speed & Performance 4.8 5.3 5.7 Cylinder Head Gaskets MLS 
Includes 2 gaskets (enough for 2 heads or 1 engine) 

Texas Speed and Performance MLS 4.8/5.3/LS1/LS6 Head gasket. These gaskets come from the same supplier that makes GM's. OEM quality, construction, and reliability. A great choice for stock and modified engines. 

3.910 bore, 0.051 in. thickness

BORE SIZE: 3.910"

THICKNESS: .051" Compressed

These can be used in place of GM part #12589226

Fits: 4.8, 5.3, 5.7 blocks 
Does not fit 6.0 or 6.2L. For those please visit ebay item: 
https://www.ebay.com/itm/146358659145

Great for Turbo, Supercharged, Nitrous and normally aspirated applications. 

IN STOCK & SHIPS FAST! 
Returns on new and unopened items only. Free shipping applies to Cont. USA only.