The Cometic Ford 351 Cleveland 4.100 inch Bore .040 inch MLS Head Gasket - C5871-040 is a precision-engineered head gasket with a 4.100" bore and .100" 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.
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Material: Multi-Layer Steel (MLS)
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Bore Size: 4.100"
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Thickness: .100" compressed
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Part Number: C5871-040
Verified fitment: Ford Bronco (1978–1979); Ford Country (1971–1974); Ford Custom (1971–1977); Ford E 100 (1980); Ford E 250 (1980–1982); Ford E 350 (1980–1982); Ford Elite (1975–1976); Ford F 100 (1977–1979); and 19 more.