Just to follow up on this thread for anyone finding this page via a search engine, we were also looking for a K4M collet, tried everywhere including Trechii as mentioned above (a recommended spares retailer) with no luck, but the K4M single groove collets are only £1.80 from Renault, and are sold as singles. Part number FOR K4M is; 77 00 873 652
Thats very handy to know next time I drop a collet on the floor I won't be having kittens about the possibility of having to buy new ones from Renault :d Very very pleasantly surprised at the reasonable price So you dont get fleeced for everything at the main dealers
I know they will be the same for the 1.4 K4J as both the 1.4 and 1.6 use the same valves.
I make the assumption that the collets are also the same for the 1.8 F4P and 2.0 F4R?