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The Cometic AMC 290/304/343/360 Gen-2/3 V8 .040in MLS Cylinder Head Gasket - 3.810in Bore - C5669-040 is a precision-engineered head gasket with a 3.810" bore and .040" compressed thickness.
The Cometic Multi-Layer Steel (MLS) head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Featuring Multi-Layer Steel (MLS) construction, this gasket uses multiple embossed steel layers that conform to surface irregularities and maintain a positive seal. Precision CNC-machined to exacting tolerances, this gasket seals combustion, water jackets, and oil passages simultaneously — eliminating the need for multiple gaskets or sealing compounds.
Verified fitment: American Motors AMX (1968–1969, 1978–1979); American Motors Ambassador (1967–1974); American Motors American (1967–1968); American Motors Concord (1978–1979); American Motors Gremlin (1972–1976); American Motors Hornet (1970–1977); American Motors Javelin (1968–1974); American Motors Marlin (1967); and 17 more.
Free U.S. standard shipping on qualifying orders $199+. Special order and made-to-order items can't be cancelled or refunded once ordered.
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We carry 750,000+ parts, so we can probably still get it. Check the spelling, try the part number, or ask us.
Request this part Text us (833) 691-5717