ATHENA-SCE HEAD GASKET – 6 BOLT LSX – W/ VULCAN CUT-RING – 3.997″ – 0.059″ – LEFT – SCE-CR199959L
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. They feature the extra tabs for 6-bolt capabilities as well. We have been told that if you’d like to use them on a standard 4-bolt LS block, you can simply cut the tabs off or leave them alone.