gps reciever jack

hi lads,does anyone know where I could get a spare gps receiver jack for an icom vhf/dsc radio to connect with a Garmin, only info I have is ita an NMEAD0183 VER.2.0 it looks for all the world like jack plugs on a stereo system, any help much appreciated ,Eddie.....

Have you a model number for the radio
Is it a 5 or 6 pin, push in or screw in.


https://www.google.ie/search?q=icom+nme ... d=0CEIQsAQ

Model icon m421 have seen a that Donal but can't seem to see anywhere it can be bought,thanks,eddie