Looking for aftermarket parts to modify or upgrade your Avanti II with head gaskets? At Tunersports.com we carry a huge selection of the top name brand performance head gasket parts and accessories.

SHIPS FROM MANUFACTURER C5489-120MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic GM LS Gen-3/4 Small Block V8 .120in MLS Cylinder Head Gasket - 4.100in Bore 2001-2004 Avanti II Base $235.73 |
SHIPS FROM MANUFACTURER C5530-020Fully cured nitrile butadiene rubber binder for maximum fluid resistance... Cometic Chevrolet Gen-1 Small Block V8 .020in Fiber Timing Gasket Kit 1980-1985 Avanti II Base 1985-1985 Avanti II GT $50.73 |
SHIPS FROM MANUFACTURER C5531-031Fully cured nitrile butadiene rubber binder for maximum fluid resistance... Cometic GM .031in Fiber Distributor Gasket 1980-1985 Avanti II Base 1985-1985 Avanti II GT $33.08 |
SHIPS FROM MANUFACTURER C5531-047Fully cured nitrile butadiene rubber binder for maximum fluid resistance... Cometic GM .047in Fiber Distributor Gasket 1980-1985 Avanti II Base 1985-1985 Avanti II GT $33.08 |
SHIPS FROM MANUFACTURER C5531-060Fully cured nitrile butadiene rubber binder for maximum fluid resistance... Cometic GM .060in Fiber Distributor Gasket 1980-1985 Avanti II Base 1985-1985 Avanti II GT $33.08 |
SHIPS FROM MANUFACTURER C5538-094Fully cured nitrile butadiene rubber binder for maximum fluid resistance... Cometic Chevrolet Gen-1 Small Block V8 .094in Fiber Water Outlet Gasket 1980-1985 Avanti II Base 1985-1985 Avanti II GT 1987-1991 Avanti II Base $34.08 |
SHIPS FROM MANUFACTURER C5538AFMA chemically blown, compounded nitrile synthetic rubber bonded to an aluminum core... Cometic Chevrolet Gen-1 Small Block V8 .060in AFM Water Outlet Gasket 1980-1985 Avanti II Base 1985-1985 Avanti II GT 1987-1991 Avanti II Base $36.58 |
SHIPS FROM MANUFACTURER C5551-036MLX Gaskets utilize an integrated "stopper" layer for combustion chamber sealing... Cometic Chevy Gen1 Small Block V8 .036in MLX Cyl Head Gasket-4.220in Bore-All Pro Heads-Round Bore 1980-1985 Avanti II Base 1985-1985 Avanti II GT $131.42 |
SHIPS FROM MANUFACTURER C5551-040MLX Gaskets utilize an integrated "stopper" layer for combustion chamber sealing... Cometic Chevrolet Gen-1 Small Block V8 .040in MLX Cylinder 4.220in Bore Round Bore Head Gasket 1980-1985 Avanti II Base 1985-1985 Avanti II GT $131.42 |
SHIPS FROM MANUFACTURER C5551-042MLX Gaskets utilize an integrated "stopper" layer for combustion chamber sealing... Cometic Chevy Gen1 Small Block V8 .042in MLX Cyl Head Gasket-4.220in Bore-All Pro Heads-Round Bore 1980-1985 Avanti II Base 1985-1985 Avanti II GT $136.39 |
SHIPS FROM MANUFACTURER C5551-044MLX Gaskets utilize an integrated "stopper" layer for combustion chamber sealing... Cometic Chevy Gen1 Small Block V8 .044in MLX Cyl Head Gasket-4.220in Bore-All Pro Heads-Round Bore 1980-1985 Avanti II Base 1985-1985 Avanti II GT $136.39 |
SHIPS FROM MANUFACTURER C5551-048MLX Gaskets utilize an integrated "stopper" layer for combustion chamber sealing... Cometic Chevy Gen1 Small Block V8 .048in MLX Cyl Head Gasket-4.220in Bore-All Pro Heads-Round Bore 1980-1985 Avanti II Base 1985-1985 Avanti II GT $157.01 |
SHIPS FROM MANUFACTURER C5551-050MLX Gaskets utilize an integrated "stopper" layer for combustion chamber sealing... Cometic Chevy Gen1 Small Block V8 .050in MLX Cyl Head Gasket-4.220in Bore-All Pro Heads-Round Bore 1980-1985 Avanti II Base 1985-1985 Avanti II GT $157.01 |
SHIPS FROM MANUFACTURER C5551-052MLX Gaskets utilize an integrated "stopper" layer for combustion chamber sealing... Cometic GM Gen-1 Small Block V8 .052in MLX 4.220in Bore Cylinder Head Gasket 1980-1985 Avanti II Base 1985-1985 Avanti II GT $157.01 |
SHIPS FROM MANUFACTURER C5551-060MLX Gaskets utilize an integrated "stopper" layer for combustion chamber sealing... Cometic Chevy Gen1 Small Block V8 .060in MLX Cyl Head Gasket-4.220in Bore-All Pro Heads-Round Bore 1980-1985 Avanti II Base 1985-1985 Avanti II GT $157.01 |
SHIPS FROM MANUFACTURER C5751-027MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic GM LS1 SB 4.060 inch Bore .027 inch MLS Head Gasket 2001-2004 Avanti II Base $109.30 |
SHIPS FROM MANUFACTURER C5751-030MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic GM LS1 SB 4.060 inch Bore .030 inch MLS Head Gasket 2001-2004 Avanti II Base $109.30 |
SHIPS FROM MANUFACTURER C5751-036MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic GM LS1 SB 4.060 inch Bore .036 inch MLS Head Gasket 2001-2004 Avanti II Base $109.30 |
SHIPS FROM MANUFACTURER C5751-040MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic GM LS1 SB 4.060 inch Bore .040 inch MLS Head Gasket 2001-2004 Avanti II Base $109.30 |
SHIPS FROM MANUFACTURER C5751-045MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic GM LS1 SB 4.060 inch Bore .045 inch MLS Head Gasket 2001-2004 Avanti II Base $109.30 |
SHIPS FROM MANUFACTURER C5751-051MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic GM LS1 SB 4.060 inch Bore .051 inch MLS Head Gasket 2001-2004 Avanti II Base $109.30 |
SHIPS FROM MANUFACTURER C5751-056MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic GM LS Gen-3/4 Small Block V8 .056in MLS Cylinder Head Gasket - 4.060in Bore 2001-2004 Avanti II Base $138.41 |
SHIPS FROM MANUFACTURER C5751-060MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic GM LS1 SB 4.060in Bore .060 inch MLS Head Gasket 2001-2004 Avanti II Base $138.41 |
SHIPS FROM MANUFACTURER C5751-066MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic GM LS1 SB 4.060 inch Bore .066 inch MLS-5 Head Gasket 2001-2004 Avanti II Base $138.41 |
SHIPS FROM MANUFACTURER C5751-070MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic GM LS1 SB 4.060 inch Bore .070 inch MLS-5 Head Gasket 2001-2004 Avanti II Base $138.41 |