Introducing the CAD Designed and CNC machined Billet Aluminum COBB Oil Filler Cap. Complete with the COBB logo engraved predominately on top, "Knurling" style cut on the sides for added grip and a Subaru factory o-ring to ensure a proper seal. The perfect finishing touch on any COBB tuned Subaru engine compartment. Available in an Anodized Gold or Blue for a long lasting finish. Direct replacement for the factory oil cap.