Whats this crankcase code mean?

[garrettohio]

Is this what number I need to order correct piston for my L2900 tractor?

 

[whitetiger]

Is this what number I need to order correct piston for my L2900 tractor?
View attachment 130704

That is just a casting number, the model and serial number are stamped in the block just to the right of the injection pump. Look right below the bleeder on the injection pump.

 

[garrettohio]

That is just a casting number, the model and serial number are stamped in the block just to the right of the injection pump. Look right below the bleeder on the injection pump.

I found it says 1503-LA 1274