MAHLE Original Buick Apollo 74-73 Head SetCylinder Head Bolts Not Included; Cylinder Head Bolt Replacement Recommended This Part Fits: Year Make Model Submodel 1973 1975 Buick Apollo Base 1975 Buick Apollo SR 1973 Buick Centurion Base 1973 1976 Buick Century Base 1975 1976 Buick Century Custom 1976 Buick Century Indianapolis 500 Pace Car 1973 1975 Buick Century Luxus 1978 1979 Buick Electra 225 1980 Buick Electra Estate Wagon 1978 1980 Buick Electra Limited 1978 1980 Buick Electra Park Avenue