Want To Buy: Yanmar GM 1 Pre-Combustion Chamber

[silver3068]

I bought a boat with a non running yanmar GM 1 engine lots of carbon around injector i removed it and the head to check valves to find top half of precombustion chamber missing and two screwdriver marks on mating surface of bottom one insulator washer gone too.
Can anyone help me with part number for precombustion chamber or might have one for sale thanks

[Badsanta]

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