Tension Idler Pulley is a direct fit for the following:

1996-2005 Buick Park Avenue
1997-2004 Buick Regal
1996-1997 Chevrolet Camaro
2004-2005 Chevrolet Impala
2004-2005 Chevrolet Monte Carlo
2000-2003 Pontiac Bonneville
1996-1997 Pontiac Firebird
1997-2007 Pontiac Grand Prix

Genuine GM Part Number: 12564509