If your R4 has a 1982 engine, the Renault part number for the filter is:
7701033837. Many pre-1984 Renaults used the same filter, including R5s, but, as jjad and Brian say, the thread size changed that year. If you Google the Renault part number, you'll get lots of equivalents.
(The part number for 84> models is 7700734945. This, or any of its equivalents, will not fit your car).