The copper exhaust gaskets have an embossed O-ring around the exhaust port to increase sealing pressure for a tight, leak-proof seal, including uneven surfaces. Sold as a pair.
        
      - Port Style:
 - Round
 - Gasket Material:
 - Copper
 - Port Height (in.):
 - 2.500 in.
 - Port Width (in.):
 - 2.500 in.
 - Thickness (in.):
 - 0.043 in.
 - Quantity:
 - Sold as a pair.
 - Application Notes:
 - For AJPE 481X alcohol racing heads.