2006 Audi A3 Quattro Submodel: Base; Engine: 3.2L V6; Thread Size: M10 x 1 x 590; Position: Front;. 2007 Audi A3 Quattro Submodel: Base; Engine: 3.2L V6; Thread Size: M10 x 1 x 590; Position: Front;. 2008 Audi A3 Quattro Submodel: Base; Engine: 3.2L V6; Thread Size: M10 x 1 x 590; Position: Front;.