[i]The "645FZ" crankcase which GE now markets, originated back in the mid-1990s when EMD refused to sell parts to MK Rail (Boise Locomotive) because they were producing new locomotives (MK1200G and MK5000C), and in response MK assembled a team to find replacements for almost every significant component in the EMD product. [/i]
Actually MK Rail looked for the lowest price engine it could find. Since they make some EMD engine replacement parts, they used an engine that they could use their parts on. Some of the engine parts (various housings, air ducts, gaskets, etc) actually are genuine EMD parts, bought through rebuild replacement suppliers or indirectly from EMD via subsidiaries.