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Today we're looking at the Honda 07973-4150000 Crankshaft Main Bearing Dis/Assembly Tool. As you might expect, this is used to remove or reinstall the main bearings for the crankshaft in the block and crank cap with the assistance of a hydraulic press.
There's an R stamped into one end - visible above - and a P on the other.
It's a very solid piece of metal and has a variety of thicknesses along it's length.
There is an extra ring which slides onto one end:
For dimensions, see this page.
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