need help with Piston ID

[compedgemarine]

Hey guys. I have three brand new GM pistons that are for some diesel but not sure what. they are 4.84 inch diameter with four rings. the box says piston kit D3 1  697476.  cast onto the sides next to the pin bore is 'zollner  4632'  'clear o matic'  on the other side same place is and old style GMC logo and 692716.
at this physical size this has to be for a commercial engine but no idea what. I would like to sell them if I can figure out what they go to. time for all you diesel engine guys to show how good you are. any help is appreciated.
thanks
steve

[makemineatwostroke]

Steve,that is a 92 series piston for a special application like for military etc the std is a 5 ring are they 1 PC or 2 pc FWIW that is a German piston mfg and I believe Hasting does the marketing and manufacturing for them for North and South America
have a good day

[compedgemarine]

OK so does anyone need 92 pistons for a military detroit? just out of curiosity why does the military use one less oil ring?
thanks
steve

[makemineatwostroke]

Steve, military spec pistons are different than the civil most of the time it's a lager compression ring 4 ring pistons are us in transportation engines also but the # you gave shows to be military and I have no idea what you are going to do with those 3 piston's   have a great evening

[Len Silva]

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