Buick - Direct Fit Catalytic Converters

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Apollo

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
1975	6	All Models	Direct Fit	23425
1975	8	All Models	Direct Fit	23425



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Century, Century Special

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
93-95	4	134 CID [2.2L]	Universal	94005
86-92	4	151 CID [2.5L] W/O Air	Universal	94004
82-85	4	151 CID [2.5L] W/O Air	Direct Fit	23454
94-95	6	189 CID [3.1L]	Universal	94005
89-93	6	204 CID [3.3L]	Universal	94005
87-89	6	173 CID [2.8L] Code W Eng. W/O Air	Universal	94004
87-89	6	231 CID [3.8L]	Universal	94004
1986	6	173 CID [2.8L] Code X W/Air	Universal	94014
1986	6	231 CID [3.8L] W/Air	Universal	94015
84-85	6	231 CID [3.8L] W/O Air	Direct Fit	23454
82-85	6	181 CID [3.0L] W/Air	Direct Fit	23454
82-83	6	173 CID [2.8L] W/Air	Direct Fit	23454
1981	6	231 CID [3.8L] W/Air	Direct Fit	93418
1980	6	231 CID [3.8L] [Exc. Turbo] W/O Air	Direct Fit	23431
79-80	6	231 CID [3.8L] Turbo	Direct Fit	93418
78-79	6	196, 231 CID [3.2, 3.8L] [Exc. Turbo]	Direct Fit	93418
75-77	6	231 CID [3.8L]	Universal	94006
1981	8	265 CID [4.3L] Code H Eng. W/Air	Direct Fit	93418
80-81	8	301, 305 CID [4.9, 5.0L] Code H Eng. W/Air	Direct Fit	93418
79-80	8	265, 301 CID [4.3, 4.9L]	Direct Fit	93418
78-79	8	305 CID [5.0L] Code H Eng.	Direct Fit	23431
78-79	8	350 CID [5.7L]	Direct Fit	23431
1978	8	305 CID [5.0L] Code U Eng. 2 Bbl.	Direct Fit	93418
75-77	8	305, 350 CID [5.0, 5.7L]	Universal	94006
75-77	8	403 CID [6.6L]	Universal	94006



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Electra - Exc. Estate Wagon

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
93-94	6	3800 W/Air	Universal	94005
88-92	6	231 CID [3.8L] W/O Air	Direct Fit	23422
86-87	6	231 CID [3.8L] W/O Air	Universal	94005
1985	6	181 CID [3.0L] W/O Air	Direct Fit	23454
1985	6	231 CID [3.8L] W/O Air	Direct Fit	23454
1984	6	252 CID [4.1L] W/Air	Direct Fit	23427
81-83	6	252 CID [4.1L] W/Air	Direct Fit	93418
1980	6	252 CID [4.1L] W/O Air	Universal	94006
1984	8	307 CID [5.0L] W/Air	Direct Fit	23447
81-83	8	307 CID [5.0L] W/Air	Direct Fit	93418
1980	8	301 CID [4.9L] W/O Air	Universal	94005
1980	8	350 CID [5.7L] Code R Eng. W/O Air	Universal	94006
77-79	8	350 CID [5.7L]	Universal	94006
77-79	8	403 CID [6.6L]	Universal	94006
1976	8	350 CID [5.7L]	Universal	94006
75-76	8	455 CID [7.5L]	Universal	94006



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Estate Wagon

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
84-90	8	307 CID [5.0L] W/Air	Direct Fit	93456
81-83	8	307 CID [5.0L] W/Air	Direct Fit	93418
1981	8	301 CID [4.9L] W/Air	Universal	94015
1980	8	301 CID [4.9L] W/O Air	Universal	94006
1980	8	350 CID [5.7L] Code R Eng. W/O Air	Universal	94006
1980	8	350 CID [5.7L] Code X Eng. W/O Air	Universal	94006
77-79	8	350 CID [5.7L]	Universal	94006
77-79	8	403 CID [6.6L]	Universal	94006
75-76	8	455 CID [7.5L]	Universal	94006



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LeSabre - Exc. Estate Wagon

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
1995	6	231 CID [3.8L] W/O Air	Universal	94006
93-94	6	231 CID [3.8L] W/O Air	Direct Fit	23223
92-95	6	3800 W/Air	Universal	94015
1992	6	231 CID [3.8L] W/O Air	Direct Fit	23223
88-91	6	231 CID [3.8L] W/O Air	Direct Fit	23422
86-87	6	231 CID [3.8L] W/O Air	Universal	94006
1986	6	181 CID [3.0L] W/O Air	Universal	94006
84-85	6	231, 252 CID [3.8, 4.1L] W/Air	Direct Fit	23427
81-83	6	231 CID [3.8L] W/O Air	Direct Fit	93418
81-83	6	231 CID [3.8L] W/Air	Direct Fit	93418
81-83	6	252 CID [4.1L] W/Air	Direct Fit	93418
1980	6	231 CID [3.8L] W/O Air	Direct Fit	93418
1980	6	252 CID [4.1L] W/O Air	Direct Fit	23431
77-79	6	231 CID [3.8L]	Universal	94006
1976	6	231 CID [3.8L]	Direct Fit	23434
84-85	8	307 CID [5.0L] W/Air	Direct Fit	23447
81-83	8	307 CID [5.0L] [Exc. Wagon] W/Air	Direct Fit	93418
1981	8	301 CID [4.9L] W/Air	Universal	94015
1980	8	301 CID [4.9L] W/O Air	Direct Fit	23431
1980	8	350 CID [5.7L] Code R Eng. W/O Air	Universal	94006
1980	8	350 CID [5.7L] Code X Eng. W/O Air	Universal	94006
77-79	8	301, 305 CID [4.9, 5.0L]	Direct Fit	23431
77-79	8	350 CID [5.7L]	Universal	94006
77-79	8	403 CID [6.6L]	Universal	94006
75-76	8	350 CID [5.7L]	Universal	94006
75-76	8	455 CID [7.5L]	Universal	94006



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Park Avenue [See Electra For Earlier Years]

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
1995	6	231 CID [3.8L] Ultra Supercharged	Universal	94005
93-95	6	3800 W/Air	Universal	94005
93-94	6	231 CID [3.8L] W/O Air	Direct Fit	23223
91-92	6	231 CID [3.8L] W/O Air	Direct Fit	23223
88-90	6	231 CID [3.8L] W/O Air	Universal	94005
86-87	6	231 CID [3.8L] W/O Air	Direct Fit	23420
1985	6	231 CID [3.8L] W/O Air	Direct Fit	23454



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Reatta

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
88-91	6	231 CID [3.8L]	Universal	94005



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Regal

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
94-95	6	191 CID [3.1L]	Universal	94005
93-94	6	231 CID [3.8L]	Universal	94006
91-92	6	189 CID [3.1L] W/O Air	Direct Fit	23480
90-92	6	231 CID [3.8L]	Universal	94005
89-90	6	189 CID [3.1L] W/O Air	Direct Fit	23480
88-89	6	173 CID [2.8L] W/O Air	Direct Fit	23480
86-87	6	231 CID [3.8L] Turbo	Direct Fit	93439
84-87	6	231 CID [3.8L] [Exc. Turbo] W/Air	Direct Fit	23427
84-85	6	231 CID [3.8L] Turbo	Universal	94006
84-85	6	252 CID [4.1L] W/Air	Direct Fit	23427
1983	6	231 CID [3.8L] [Exc. Turbo] W/Air	Direct Fit	93418
82-83	6	252 CID [4.1L] W/Air	Direct Fit	93418
81-83	6	231 CID [3.8L] Turbo W/Air	Direct Fit	93427
81-82	6	231 CID [3.8L] [Exc. Turbo] W/O Air	Direct Fit	93418
81-82	6	231 CID [3.8L] [Exc. Turbo] W/Air	Universal	94015
1980	6	231, 252 CID [3.8, 4.1L] W/Air	Direct Fit	93418
78-79	6	196, 231 CID [3.2, 3.8L] [Exc. Turbo]	Direct Fit	93418
78-79	6	231 CID [3.8L] Turbo	Universal	94006
75-77	6	231 CID [3.8L]	Universal	94006
86-87	8	307 CID [5.0L] W/Air	Direct Fit	23427
83-84	8	307 CID [5.0L] Code H Eng. W/Air	Direct Fit	93456
80-82	8	265, 301, 305 CID [4.3, 4.9, 5.0L] W/Air	Direct Fit	93418
1979	8	265, 301 CID [4.3, 4.9L]	Direct Fit	93418
78-79	8	305 CID [5.0L] Code H Eng.	Direct Fit	23431
78-79	8	350 CID [5.7L]	Universal	94006
1978	8	305 CID [5.0L] Code U Eng. 2 Bbl.	Direct Fit	93418
1977	8	403 CID [6.6L]	Universal	93006
75-77	8	305, 350 CID [5.0, 5.7L]	Universal	94006



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Riviera

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
1995	6	231 CID [3.8L] Supercharged	Universal	94004
93-95	6	231 CID [3.8L]	Universal	94004
88-92	6	231 CID [3.8L] W/O Air	Direct Fit	23445
86-87	6	231 CID [3.8L] W/O Air	Universal	94005
84-85	6	231 CID [3.8L] Turbo W/O Air	Direct Fit	23427
1984	6	252 CID [4.1L] W/Air	Direct Fit	23427
82-83	6	231 CID [3.8L] Turbo W/Air	Direct Fit	23427
1982	6	231 CID [3.8L] W/O Air	Direct Fit	23427
81-83	6	252 CID [4.1L] W/Air	Direct Fit	93418
1981	6	231 CID [3.8L] Turbo W/Air	Universal	94015
1980	6	231 CID [3.8L] Turbo W/O Air	Universal	94006
1979	6	231 CID [3.8L] Turbo	Universal	94006
84-85	8	307 CID [5.0L] W/Air	Universal	94015
81-83	8	307 CID [5.0L] W/Air	Direct Fit	93418
1980	8	350 CID [5.7L] Code R Eng.	Universal	94006
77-79	8	350 CID [5.7L]	Universal	94006
77-78	8	403 CID [6.6L]	Universal	93006
75-76	8	455 CID [7.5L]	Universal	93006



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Roadmaster

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
94-95	8	350 CID [5.7L] W/O Air, RH	Universal	94005
94-95	8	350 CID [5.7L] W/O Air, LH	Universal	94005
91-93	8	305 CID [5.0L] W/O Air	Direct Fit	93456
91-93	8	350 CID [5.7L] W/O Air	Direct Fit	93456



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Skyhawk

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
87-89	4	2.0L Code 1 Eng. Hi-Output W/O Air	Direct Fit	23445
87-88	4	2.0L Code K Eng. W/O Air	Universal	94004
1987	4	2.0L Code M Eng. Turbo W/O Air	Universal	94005
84-86	4	1.8L Code J Eng. Turbo W/O Air	Universal	94004
84-86	4	2.0L W/O Air	Universal	94003
83-86	4	1.8L Code O Eng. [Exc. Turbo] W/O Air	Universal	94003
1983	4	2.0L Code P Eng. W/Air	Universal	94013
1983	4	2.0L Code B Eng. [Exc. Turbo] W/O Air	Universal	94003
1982	4	1.8L W/Air	Universal	94013
1980	6	231 CID [3.8L]	Direct Fit	23425
75-79	6	231 CID [3.8L]	Direct Fit	23425



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Skylark

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
93-94	4	138 CID [2.3L] Code 3 Eng.	Universal	53004
1992	4	138 CID [2.3L] Code 3 Eng.	Universal	53003
90-91	4	151 CID [2.5L] Code U Eng. W/O Air	Universal	94004
88-92	4	138 CID [2.3L] Code D [Quad 4] W/O Air	Universal	94005
86-89	4	151 CID [2.5L] Code U Eng. W/O Air	Direct Fit	23445
82-85	4	151 CID [2.5L] Code R or 5 Eng. W/O Air	Direct Fit	23454
1981	4	151 CID [2.5L] W/Air	Universal	94013
1980	4	151 CID [2.5L]	Universal	94004
1994	6	191 CID [3.1L]	Universal	94005
89-93	6	204 CID [3.3L]	Universal	94005
85-88	6	181 CID [3.0L]	Direct Fit	23445
1985	6	173 CID [2.8L] Code W Eng. W/O Air	Direct Fit	23454
83-84	6	173 CID [2.8L] Code Z Eng. W/Air	Direct Fit	23454
82-85	6	173 CID [2.8L] Code X Eng. W/Air	Direct Fit	23454
1982	6	173 CID [2.8L] Code Z Eng. W/Air	Direct Fit	23452
1981	6	173 CID [2.8L] W/Air	Universal	94013
1980	6	173 CID [2.8L]	Universal	94004
75-79	6	231 CID [3.8L]	Direct Fit	23425
75-79	8	All Models	Direct Fit	23425



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Somerset, Somerset Regal

YR	Cylinder	Engine Size/Description	Converter Type	Part No.
88-89	4	138 CID [2.3L]	Universal	94005
85-89	4	151 CID [2.5L]	Universal	94004
1989	6	204 CID [3.3L]	Universal	94004
85-88	6	181 CID [3.0L] W/O Air	Direct Fit	23445



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