ATHENA-SCE HEAD GASKET – 4 BOLT LS – W/ VULCAN CUT-RING – 4.056″ – 0.059″ – CR200559
This Is the ultimate seal for your LS engine! Available in 3.997″, 4.056″, 4.150″, and 4.174″ bore sizes.
These gaskets use a stainless o-ring that cuts into the head to provide the strongest seal available for high boost or high compression engines. Because the o-ring cuts into the aluminum head, when you pull the head off you will have to surface .0003″- .0005″ before reinstalling the head.