Buick

Regal FWD

Yr	Cyl	Desc	UNIV	DF	PK
2001	6	All models with 3.8L engine except California	2506R	4876	N/A
1996-1999	6	All models with 3.8L engine and resonator except California	2506R	4898	N/A
1995-1996	6	All 3.1L models with post converter O2 sensor except California	2505R	4838	N/A
1994-1995	6	All models with 3.1L engine excecpt models with post converter O2 sensor	6904R	4629	N/A
1993-1994	6	All models with 3.8L engine	6906	N/A	N/A
1991-1995	6	All models with 3.4L engine	6906	4779	N/A
1990-1992	6	All models with 3.8L engine	6906	4302	N/A
1989-1993	6	All models with 3.1L engine except 1993 California	6905	4137	PK-89
1988-1989	6	All models with 2.8L engine	6905	4137	PK-89