Carburettor Foam Air Filter with Blank Baseplate - 40mm Internal Height NUT which feature two holes cut

which feature two holes cut out of the foam on the underside of the air filter

All early Impreza turbos from 1999-200 (known as version 5 & version 6) both UK and JDM specifictation

this means all the filters can be used with any Velocity stack to achieve the correct neck diameter needed for your application

Audi SQ2 (GA) 2

Carburettor Foam Air Filter with Blank Baseplate - 40mm Internal Height NUT which feature two holes cutRamairs hugely successful range of filter kits, designed to bolt directly to the carburettor body, is used widely in both competition and street applications. The element is of sturdy construction, supported by a stainless steel cage and provides maximum surface area to optimise the airflow for induction ramming. The range of baseplates are cut for a variety of well known carburettor types and have quick release fasteners to attach the element. RS