Heater Hose Fitting is a direct fit for the following:

2005-2009 Buick Allure
2005-2009 Buick LaCrosse
1999-2004 Buick Regal
2000-2005 Chevrolet Impala
2000-2005 Chevrolet Monte Carlo
1999-2008 Pontiac Grand Prix

Genuine GM Part Number: 24506322