One New Aftermarket Replacement Flywheel Ring Gear (with 159 Teeth)
Fits Cummins Engine Models:
4B4.5, 4BT3.9, 6BT5.9
Tech Info:
Inner Diameter: 15.092
Outer Diameter: 16.06
Teeth: 159"
Replaces Part Number: 3901774
All OEM part numbers and logos are to be used for identification purposes only