This is a flywheel for the Isuzu FTR model truck. The flywheel provides mass for rotational inertia to keep your engine running. Otherwise, the engine will stall when you let your foot off the accelerator. It balances the engine. A flywheel is specifically weighted to the crankshaft to smooth out the rough feeling caused by even a slight imbalance.
Year: 1985 to 1990
Engine Type: 6GB1