| Yr | Cyl | Desc | UNIV | DF | PK | | 1996-1998 | 4 | All GTI models with 2.0L engine and manual transmision, except California | 2504R | 4114 | N/A |
| 1994-1995 | 4 | All models with 2.0L engine | 6905R | N/A | N/A |
| 1993 | 4 | All models with 2.0L engine | 6904R | 4755 | PK-206 |
| 1990-1992 | 4 | 01/1990 - 1992, all models with 1.8L, 8 valve, RV engine; If 50mm O.D. outlet pipe is required, use PK-68 | 6904R | 4752 | PK-206 |
| 1988-1989 | 4 | All GTI models with 1.8L, PF, 16 valve engine | 6905R | 4753 | N/A |
| 1988-1989 | 4 | All models with 1.8L, RV engine; If 50mm O.D. outlet pipe is required, use PK-68 | 6904R | 4752 | PK-206 |
| 1987-1992 | 4 | All models with 1.8L, PL or 2.0L, 16 valve engine | 6904R | 4755 | N/A |
| 1986-1987 | 4 | All models with 1.8L engine, except RV or PL | 6904 | 4754 | PK-69 |
| 1985 | 4 | All GTI models with 1.8L engine | 6904 | 4754 | PK-69 |
| 1985-1987 | 4 | All models with 1.8L engine, except 1985 GTI | 6915R | 4751 | N/A |