1975-1976 Avanti II Base 6.6 Liter THM350, 1977 Buick Century Base 5.7 Liter SM326/M15, 1977 Buick Century Base 5.7 Liter SM326/M15, 1977 Buick Century Base 5.7 Liter SM326/M15, 1977 Buick Century Base 5.7 Liter SM330/M15, 1977 Buick Century Base 5.7 Liter SM330/M15, 1977 Buick Century Base 5.7 Liter SM330/M15, 1977 Buick Century Base 5.7 Liter THM350, 1977 Buick Century Base 5.7 Liter THM350, 1977 Buick Century Base 5.7 Liter THM350, 1977 Buick Century Base 5.7 Liter THM400, 1977 Buick Century Base 5.7 Liter THM400, 1977 Buick Century Base 5.7 Liter THM400, 1977 Buick Century Custom 5.7 Liter SM326/M15, 1977 Buick Century Custom 5.7 Liter SM326/M15, 1977 Buick Century Custom 5.7 Liter SM326/M15, 1977 Buick Century Custom 5.7 Liter SM330/M15, 1977 Buick Century Custom 5.7 Liter SM330/M15, 1977 Buick Century Custom 5.7 Liter SM330/M15, 1977 Buick Century Custom 5.7 Liter THM350, 1977 Buick Century Custom 5.7 Liter THM350, 1977 Buick Century Custom 5.7 Liter THM350, 1977 Buick Century Custom 5.7 Liter THM400, 1977 Buick Century Custom 5.7 Liter THM400, 1977 Buick Century Custom 5.7 Liter THM400, 1977 Buick Century Custom 6.6 Liter SM326/M15, 1977 Buick Century Custom 6.6 Liter SM330/M15, 1977 Buick Century Custom 6.6 Liter THM350, 1977 Buick Century Custom 6.6 Liter THM400, 1977 Buick Regal Base 5.7 Liter SM326/M15, 1977 Buick Regal Base 5.7 Liter SM326/M15, 1977 Buick Regal Base 5.7 Liter SM326/M15, 1977 Buick Regal Base 5.7 Liter SM330/M15, 1977 Buick Regal Base 5.7 Liter SM330/M15, 1977 Buick Regal Base 5.7 Liter SM330/M15, 1977 Buick Regal Base 5.7 Liter THM350, 1977 Buick Regal Base 5.7 Liter THM350, 1977 Buick Regal Base 5.7 Liter THM350, 1977 Buick Regal Base 5.7 Liter THM400, 1977 Buick Regal Base 5.7 Liter THM400, 1977 Buick Regal Base 5.7 Liter THM400, 1977 Buick Regal SR 5.7 Liter SM326/M15, 1977 Buick Regal SR 5.7 Liter SM326/M15, 1977 Buick Regal SR 5.7 Liter SM326/M15 ...See Application Guide for Additional Fitments