I've seen the clip for sale but at over £5 it seems a bit excessive, and so far I cannot find the connector on any site. Note: I borrowed the pic from Starry boy because it is the first time I've seen this connector in a photo. Cheers Bud.
You can get fuel /hose reducers look on ebay ? check out the sizes you need ,i cant remember the size one i got for mine from local auto factor but it did the job , cant get at back of van at mo to take pick and check size etc sorry.