Engine Radiator Coolant Thermostat is a direct fit for the following:

1998-2005 Buick Century

2005-2009 Buick LaCrosse
1998-2005 Lesabre
2006-2008 Buick Lucerne
1998-2005 Buick Park Avenue
1998-2004 Buick Regal
1998-1999 Buick Riviera
1998-2002 Chevrolet Camaro
2000-2005 Chevrolet Impala
1998-2001 Chevrolet Lumina
1998-2005 Chevrolet Monte Carlo
1998-1999 Oldsmobile 88
1998-1999 Oldsmobile Intrigue
1998-2005 Pontiac Bonneville
1998-2002 Pontiac Firebird
1998-2008 Pontiac Grand Prix
3.1L & 3.8L Engines Only

Genuine GM Part Number: 24505924