It should be 6598903 which crosses over to a Napa Filter 1482
The oil capacity for a Bobcat 742B is approximately 5.5 quarts (or about 5.2 liters) when including the filter. It's important to use the correct type of oil recommended by the manufacturer for optimal performance. Always check the owner's manual for the most accurate specifications and maintenance guidelines.
The Bobcat 743B uses propane as the engine's fuel source.The Bobcat 743 utilizes diesel as the primary fuel source. The difference between a 743 and 743B bobcat are undercarriage improvements and an improved bobtach mounting plate on the front of the loader for hooking up attachments. If you were looking for propane powered units try the 742 or 742B. The 742 has a Ford industrial 4 cylinder in it and the 742B has a Mitsubishi indutrial engine in it, both of which can be converted to run on propane. On the older machines the model number for example 743, the 3 means liquid cooled diesel engine