Compatible with Ford Powerstroke 6.0L - 2003-2010 - Degas Bottle and Cap This kit contains our aftermarket Degas Bottle and the Cap Compatible with Ford 6.0L Powerstroke. It is a direct replacement Cap for the Degas Bottle (also known as the coolant overflow tank). This Cap is an OE replacement and features the updated design intended to eliminate leaks from the Degas Bottle.: Compatible with Ford interchange number 9C3Z-8101-B (RS-527) Degas Bottle Cap Ford interchange number 3C3Z-8A080-AE Coolant Reservoir FEATURES OE Concept Updated Design.