Engine Oil Pressure Switch is a direct fit for the following:

2006-2011 Buick Lucerne
2006-2011 Cadillac DTS
1995-2005 Cadillac DeVille
1995-2002 Cadillac Eldorado
1995-2004 Cadillac Seville

2004-2005 Pontiac Bonneville

Genuine GM Part Number: 12635958