Upgrade the appearance and performance of your Subaru engine bay with the AMS Performance Subaru Billet Oil Cap. Precision-engineered using CAD, this oil cap is CNC machined from durable 6061 aluminum and anodized to provide exceptional corrosion and scratch resistance. The knurled handle ensures a secure grip, while the oil-resistant Buna-N O-rings seal the fill tube, preventing oil leaks. The oil cap comes with an adjustable logo top cap cover that aligns perfectly with the AMS logo. The AMS Performance Subaru Billet Oil Cap fits most FA24, FA20, EJ25, EJ20, EJ22, and FB20 Subaru engines, and installs easily without the need for cutting, trimming, or drilling. The -4AN ORB port is located under the top cap cover, allowing for easy installation of a crankcase pressure sensor if desired. The AMS Performance Subaru Billet Oil Cap is the perfect addition to any Subaru engine bay.