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Cometic Gasket Part # CGSC5274-040

Cometic Chevy Gen1 Small Block V8 .040in MLS Cyl Head Gasket-4.135in Bore-With Edelbrock RPM Heads - C5274-040

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Before you order

Canadian since 2005 Questions? Email sales@raptorracing.com

The Cometic Chevy Gen1 Small Block V8 .040in MLS Cyl Head Gasket-4.135in Bore-With Edelbrock RPM Heads - C5274-040 is a precision-engineered head gasket with a 4.135" 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.

  • Material: Multi-Layer Steel (MLS)
  • Bore Size: 4.135"
  • Thickness: .040" compressed
  • Part Number: C5274-040

Verified fitment: Buick Century (1977–1981); Buick LeSabre (1978, 1982); Buick Regal (1977–1981, 1986); Buick Skylark (1977–1979); Chevrolet Bel Air (1955–1975); Chevrolet Biscayne (1958–1972); Chevrolet Blazer (1969–1974); Chevrolet Brookwood (1958–1961, 1969–1972); and 76 more.

Free Canadian shipping on qualifying orders $399+, with no duties or brokerage. Special order and made-to-order items can't be cancelled or refunded once ordered. Oversized items may carry a handling fee depending on your location; pickup in Mississauga has no fee.

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