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Cometic Gasket Part # CGSC5409-040

Cometic AMC 401 for Aftermarket Heads 4.380in Bore .040in MLS Head Gasket - C5409-040

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The Cometic AMC 401 for Aftermarket Heads 4.380in Bore .040in MLS Head Gasket - C5409-040 is a precision-engineered head gasket with a 4.380" bore and .380" 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.

  • Material: Multi-Layer Steel (MLS)
  • Bore Size: 4.380"
  • Thickness: .380" compressed
  • Part Number: C5409-040

Verified fitment: American Motors Ambassador (1971–1974); American Motors Javelin (1971–1974); American Motors Matador (1971–1976); Jeep Cherokee (1974–1978); Jeep J10 (1974–1978); Jeep J20 (1974–1978); Jeep Wagoneer (1974–1978).

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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