Cometic Ford Boss 302 .030in MLS Cylinder Head Gasket - 4.155in Bore - C5961-030

The Cometic Ford Boss 302 .030in MLS Cylinder Head Gasket - 4.155in Bore - C5961-030 is a precision-engineered head gasket with a 4.155" bore and .030" 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: 4.155"
• Thickness: .030" compressed
• Part Number: C5961-030

Verified fitment: Ford Mustang (1969–1971); Mercury Cougar (1969–1970).