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Discussion Starter · #1 ·
I have 2 flywheels and I can't figure out what application they are for.
One has the casting # 3915042
The other is casting # 3920378
Any info would help, thanks.
 

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I believe that one was used on the '89-93 Cummins with the Getrag 360 transmission. When they changed to the NV4500 transmission in 1994 the adapter housing, flywheel, and starter changed.
 
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