Engine Piston is a direct fit for the following:

2006-2007 Buick Rendezvous
2005-2006 Buick Terraza
2004-2006 Chevrolet Malibu
2005-2006 Chevrolet Uplander
2005-2006 Pontiac G6
2005-2006 Pontiac Montana
2005-2006 Saturn Relay

Genuine GM Part Number: 12584528