Hello I'm trying to locate or find out where to buy a thermostat for Caterpillar D333 marine engine probably from the seventies with a serial number 8m9382
I show the 8M9382 as being the fuel injection pump group number for the D333A and B s/n 80Bxxxx marine engine from the 1960's. The equivalent D333A,B engine used in tractors of the same era used a 4H1991 Regulator (thermostat), I'd assume the marine engine used the same but I don't have the marine engine parts book to check.
Change that, if it's a D333B engine it uses a 2S4044 regulator.
The regulator for a D333 marine S/N range 80B1-716 is shown as a 4L-7615. OM answered while I was typing. Only an engine S/N is going to get the 100% correct answer.
8M0001 is a 212 motor grader serial number. Bob
Maybe a re-purposed engine or block? Might be worth posting a picture or two of engine showing thermostat area?
It seems we are confusing the 8M9382 Part Number on the FIP data plate with the engine Serial Number. See illustration below. From what info I can find the engine S/N plate should be on the LH side of the cylinder block, exact location not specified.
A 8Mxxxx 212 Grader is a 1939-42 model with 4-cyl gas engine (same engine as R2 tractor)
Wondered why SIS did not mention a 212 Grader! As I recall the S/N tags on the D333 and 3306 engines were near the back on the left side just a bit below the top of the block Not the best picture and it may be a 3306 and not a D333 but believe the tag should be about the same place.