| Yr | Cyl | Desc | UNIV | DF | PK |
|---|---|---|---|---|---|
| 1996-1999 | 8 | All models with 4.6L engine, except California | 2516 | 4840 | N/A |
| 1994-1995 | 8 | All models with 4.6L engine | 6006 | 4516 | N/A |
| 1994-1995 | 8 | All models with 4.9L engine | 6906 | 4742 | N/A |
| 1992-1993 | 8 | All models with 4.9L engine | 6906 | 4211 | N/A |
| 1991 | 8 | All models with 4.9L engine | 6906 | 4815 | N/A |
| 1988-1990 | 8 | All models with 4.5L engine | 6906 | 4646 | N/A |
| 1986-1987 | 8 | All models with 4.1L engine | 6905 | 4120 | PK-98 |
| 1985 | 8 | All models with 4.1L engine | 6005 | 4303 | PK-90 |
| 1984 | 8 | All models with 4.1L engine | 6005 | 4119 | 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 | 8005 | 9177 | PK-85 |
| 1980 | 6 | All models with 4.1L engine | 6906 | N/A | PK-84 |
| 1977-1979 | 8 | All models with 425 cid | 8006 | 9104 | PK-81 |
| 1975-1976 | 8 | All models, except 500 cid (up to 7.5L engine in California) | 8006 | 9103 | PK-79 |