DriveWire sells OEM and genuine Acura RSX fuel tank and gas caps, both locking and non locking style. On later Acura's you must replace the RSX gas cap with an OEM style cap for emissions purposes.
High Volume Acura RSX Fuel Rails allow you to install an adjustable fuel pressure regulator so you can fine tune your Acura RSX air fuel ratio. The Acura RSX fuel rails are a must for turbo engines or engines that have a Nitrous system installed.