farmall M casting numbers

Darrin Stuttgen · Sep 3, 2010

I have a 1941 farmall M but the front tank is missing. I don"t know if the engine is original or what. The numbers I found on the engine are 7-16-E and 6943-DJ. The numbers on the head are 12-10-K. Does anyone know what these numbers mean? Thanks

D Slater · Sep 3, 2010

7-16-E and 12-10-K are date codes, Thats the month, day and year the part was cast. 7-16-E on a M part would be July 7 1959. 12-10-K is December 10 1941. The December casting probably wasn't installed on a production tractor until 1942. Maybe could be on a 41 calendar year model if you have one of the last tractors made in December but not likely even then. 6943-DJ is the block casting #, that # was mostly used for replacement blocks for M tractors. Regular production M tractor that had no problems after assembly should have a block cast # 6722 DG or a lower last alphabet letter on your tractor. Another indication of a replacement block is it may not have a engine serial # stamped in the block.

agpilot · Sep 3, 2010

Darrin: Guy Fay wrote a "Data.." book in which he explained some of the ways the factory coded the castings.. google guy fay or check amazon.. good ref book.. can't find find mine right now.
ag

farmall M casting numbers

Darrin Stuttgen

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D Slater

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agpilot

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