1. It is used to lock the fuel tank port to prevent fuel leakage, prevent debris and moisture from entering and polluting the oil system, and protect the fuel clean. 2. Provide a tight seal to keep the vehicle's fuel tank closed, make the fuel flow and unimpeded, and reduce gasoline emissions. 3. OE: 90501145 4. Material: ABS plastic 5. Installation location: oil filler 6. For Vauxhall Astra G MK4 1998-2004 / Astra H MK5 2004-2009 / Combo Van 1993-2007 / Corsa B 1994-2001 / Corsa C 2001-2007 / Meriva A 2003-2010 / Omega B 1994-2003 / Signum 2003- / Tigra A 1994-2001 / Tigra B 2004- / Vectra B 1995-2002 / Vectra C 2002-2008 / Zafira A 1998-2005 / Zafira B 2005-2012