D333 precombustion chamber part numbers

Our 12E 21F 540 grader has decided to let coolant into the combustion chamber. I am trying the easy option first pre combustion chambers are not great so intending to replace those and see if it helps.Have 5 out so far and no obviouse holes, one bottom seal looked very suspect but I don't think that could leak fast enough through the thread to cause compression lockup when only parked for 45 minutes. Next step would be cylinder liners, not fun.
My parts book shows 9H7071 for the chamber 2H3088 top oring seal 8M3106 bottom seal .147 thick. Can anyone advise on updated part numbers please.thanks WF

Hi Wimmera farmer,
9h7071 chamber changes to 5s1833 (Don Clarke tractors have plenty)
2h3088 o ring still avaliable
8m3016 is a bad number

Regards

My bad Daryl got 1 and 0 backwards.Edited now Thanks for your help

Hi Mate,
8m3106 changes to either of the following part numbers,

1s6819 (Smith equip has 6 in stock)
1s6820 (dct has 11 in stock)
9h5897