Overview Reviews Product Description Specifications Cylinder Head GasketUltra-Seal4.130 in Bore0.055 in Compression ThicknessRubber Coated GraphiteSmall Block ChevyEach Product Videos Product Reviews Write a Review Write a Review × MR. GASKET MR. GASKET SBC U/S Head Gasket (1 Piece) MRG5799G Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *