@http://www.micra.org.uk/member.php?u=4306 RTLkyubbi - It is designed for a K11 1.3 micra - however I don't see any reason it can't bve fitted to another car (subject to space). I can get meaurements if required...
@ Turtle - It comes as seen - two filters. Simply remove the old air filter and place the large green one over the top and secure with the supplied jubilee clip. The samller one covers an exisitng pipe leaving the engine - it becomes visbible after removing the old air filter.