| Yr | Cyl | Desc | UNIV | DF | PK | | 2001 | 6 | All models with 3.8L engine, except California | 2506R | 4876 | N/A |
| 1998-1999 | 6 | All models with 3.1L engine, except California | 2505R | 4850 | N/A |
| 1995-1996 | 6 | All models with 3.1L engine, except California | 2505R | 4838 | N/A |
| 1994 | 6 | All models with 3.1L engine | 6904R | 4629 | N/A |
| 1994-1995 | 6 | All models with 3.4L engine | 6906 | 4779 | N/A |
| 1991-1993 | 6 | All models with 3.4L engine | 6906 | 4779 | N/A |
| 1990-1993 | 6 | All models with 3.1L engine | 2904 | 4141 | N/A |
| 1990-1993 | 6 | All models with 3.1L engine and dual exhaust | 6905 | N/A | N/A |
| 1990-1991 | 4 | All models with 2.3L engine | 6905 | 4137 | PK-89 |
| 1989-1993 | 6 | All models with 3.1L engine, except dual exhaust | 6905 | 4137 | PK-89 |
| 1988-1989 | 6 | All models with 2.8L engine | 6905 | 4137 | PK-89 |