This Napa A/C Expansion Valve is a reliable replacement for Buick Centurion Estate Wagon Gran Sport models. The valve is made of durable metal and comes with a protective sleeve. It has been tested for durability and does not require any drilling or modifications for installation. The valve is a bolt-on style and is not a vintage part. It is a universal fitment for most car and truck models. The Napa A/C Expansion Valve is made in the United States and can be used as a performance part. Purchase includes the valve and protective sleeve.