For 1990-1992 Buick Century Reference Sensor API 32284XBZD 1991 3.3L V6

For 1990-1992 Buick Regal Reference Sensor API 56161FZYD 1991 3.8L V6

For 1990-1998 Buick Skylark Reference Sensor API 74957NXSW 1991 1992 1993 1994

For 1990-1996 Buick Regal Reference Sensor API 13899KRFW 1991 1992 1993 1994

For 1989-1992 Buick Riviera Reference Sensor 22191JB 1990 1991 3.8L V6

For 1990-1992 Buick Skylark Reference Sensor API 56335MRZC 1991 3.3L V6

For 1988-1992 Buick Riviera Reference Sensor SMP 31886SCTV 1989 1990 1991

For 1990-1998 Buick Skylark Reference Sensor API 12152KF 1991 1992 1993 1994