Thanks Jackwho for the part info.1351012080 looks to be fiat part number but check for yourself. That's for ducato up to 2006 , 1800kg payload.
I think 1351012080 cross refs toSachs number 280 975
Thanks PC VM.i used coastal motorhomes and the pattern part ones think they are called fast line so far they have stood up well running fully loaded with no issues and a lot cheaper than Fiat parts
Thanks Octagon.I bought some Monroe, they seem Ok so far. The bottom out bumpers was harder to get, I ended up buying from from Axel Augustin.