Cummins 3349230 Marine Engine Mount Replacement DF-477-M3 Cummins 3349230 Marine Engine Mount Replacement DF-477-M3 Suitable for Cummins engines: Cummins - 4BT & 6BT The Dual Flex DF-477-M3 Heavy duty mounts are designed for diesel engines in the 544 – 725kg range. Sugested maximum engine weight per... MSRP: Was: Now: $418.00 Add to Cart