| Yr | Cyl | Desc | UNIV | DF | PK |
|---|---|---|---|---|---|
| 1996-1997 | 8 | All models with 4.6L engine, except California | 2516 | 4840 | N/A |
| 1993 | 8 | All models with 4.9L engine | 6906 | 4742 | N/A |
| 1993-1995 | 8 | All models with 4.6L engine | 6006 | 4516 | N/A |
| 1991-1992 | 8 | All models with 4.9L engine | 6006 | 4516 | N/A |
| 1990 | 8 | All models with 4.5L engine | 6006 | 4516 | N/A |
| 1988-1989 | 8 | All models with 4.5L engine | 6006 | 4138 | N/A |
| 1986-1987 | 8 | All models with 4.1L engine | 6005 | 4303 | PK-90 |
| 1984-1985 | 8 | All models with 4.1L engine | 2905 | 9178 | PK-24 |
| 1982-1983 | 8 | All models with 4.1L engine | 6005 | 4111 | PK-85 |
| 1981-1982 | 6 | All models with 4.1L engine | 6005 | 4111 | PK-85 |
| 1980-1981 | 8 | All models with 6.0L engine | 9005 | 9177 | PK-85 |
| 1979-1980 | 8 | All models with 5.7L engine | 6906 | 4104 | PK-81 |
| 1977-1978 | 8 | All models with 5.7L engine with flanged outlet pipe | 6906 | 4104 | PK-81 |
| 1976-1977 | 8 | All models with 5.7L engine with flanged inlet and outlet | 6905 | 4101 | PK-10 |
| 1975 | 8 | All models | 8006 | 9104 | PK-81 |