Rob, look at the picture of the RIGHT side of the engine. On the left side of the picture you will see the block heater plug . Behind that you will see the steering shaft bracket with a brass ball and near that you will see the small cover on the bell housing to be used to check your timing. BELOW that inspection hole cover is a flat &amp;quot;boss&amp;quot; aprox. 5/8&amp;quot; wide and about 2-1/2 to 3&amp;quot; long. On that boss is your engine # that you need. You may need to use a small brass brush or toothbrush to clean dirt, grease, or paint off so you can read the #. Good luck and happy hunting. More questions, just ask. My knowledge is limited on diesels, all mine are gas. oleblu