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Cummins 3.9L, 5.9L B Series Flywheel - 3946387

  • Part Number: HT3946387
  • OEM Number: 3946387
  • Brand: AKMI
    Brand Info x Close AKMI

    All AKMI Corporation replacement parts are warranted to be free of defects, in material and workmanship when used under normal service and conditions.

    AKMI Corporation’s Warranty policy extends to 12 months, 100,000 miles (160,934 kilometers) or 1,200 hours whichever occurs first, or 16 months from the date of purchase. AKMI will only honor warranty claims within this time frame.

    AKMI Corporation’s Warranty will cover (replace free of charge or pay for) labor and parts needed to repair the damages directly resulting from a warranty failure.

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With warehouses across the US, we ship quickly and efficiently.

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High Quality Parts
Our parts meet and exceed the OEM specifications.


Design: Flat
Mounting: 8 Bolt Holes
Size: SAE #3
Clutch: 12 1/4" (310 mm)
Ring Gear: 15 3/8" O.D. - 152 Teeth
Pilot Bearing: Needle Bearing

Ring Gear # 3910903

Cross Reference Part Numbers