Cummins Flywheel, 3974147

thick gear
Flywheel Style: Flat, SAE#2 Mounting Holes: 8 Clutch Diameter: 14 Pilot Bearing: 206 / 305 Ring Gear Number: 3902127*  Number of Teeth: 138  Flywheel Thickness: .875"
replaces 3974147, 3922645, 5445608
*Check serial number or part number before ordering. There are multiple options for ring gears. This flywheel comes with 3902127. If you ring gear number is different, this flywheel will not work.
Our Cummins parts are made with premium OEM quality materials to ensure strength and durability. We design and manufacture these parts to withstand the extreme conditions found in todays heavy duty equipment.