This German O-Ring is used on Porsche 911/993/Boxster/Cayman (2003–2008) applications listed below when the original part is worn, leaking, damaged, or missing. It seals the service connection so fluid, air, or vacuum stays contained where the joint is assembled.Use it when old rubber, paper, or sealing surfaces have hardened, flattened, or begun to leak.Technical Details Manufacturer part number: 99970736441 Type: O-Ring Application range: Porsche 911/993/Boxster/Cayman (2003–2008) Fitment & CompatibilityUse the fitment table below to confirm year, model, submodel, and application notes before ordering.If you want help confirming the application, send us your VIN. PMB Performance has spent over 20 years working through Porsche fitment details, model changes, and service parts. Year Make Model Submodel Notes 2004 Porsche 911 40th Anniversary Edition 2003 Porsche 911 Carrera 2004 Porsche 911 Carrera 2005 Porsche 911 Carrera 2006 Porsche 911 Carrera 2007 Porsche 911 Carrera 2008 Porsche 911 Carrera 2003 Porsche 911 Carrera 4 2003 Porsche 911 Carrera 4S 2004 Porsche 911 Carrera 4S 2005 Porsche 911 Carrera 4S 2007 Porsche 911 Targa 4 2008 Porsche 911 Targa 4 2003 Porsche Boxster 2004 Porsche Boxster 2005 Porsche Boxster 2006 Porsche Boxster 2007 Porsche Boxster 2008 Porsche Boxster 2006 Porsche Cayman 2007 Porsche Cayman 2008 Porsche Cayman