Chevy GM LS1 LS6 Prontoseal Intake Manifold Gaskets Cathedral Port 3.34"x 1.19"
LS1 LS6 Printoseal Intake Manifold Gaskets. These gaskets feature 3.340"x 1.190" square ports. Printoseal constructed intake gaskets have beads of special elastomers around the ports for maximum sealing power. They also feature a non-metallic, rubber-fiber base material that resists gasoline and alcohol, while allowing the ports to be precision trimmed.