Cometic Multi-Layer Steel (MLS) Cylinder Head Gasket - C5645-066 Part #: C5645-066 Line: CMT Cometic Multi-Layer Steel (MLS) Cylinder Head Gasket Manufacturer's Defect Warranty Quantity: 1 Bore (in): 4.040 Inch Bore (mm): 102.62mm Head Gasket Material: Multi-Layer Steel (MLS) Cylinder Head Bolts Included: No Engine Make/Size: GM LT1, LT4 GEN-II SMALL BLOCK V8 Head Gasket Thickness (mm): 1.676mm Head Gasket Thickness (in): 0.066 Inch Show More Show Less