A-3907804-AI Crankshaft

One New Aftermarket Replacement Crankshaft for Cummins 6B / 6BT / 6BTA 5.9L Diesel Engines

This aftermarket replacement crankshaft fits Cummins B-Series 5.9L (6-590) diesel engines, including the 6B, 6BT, and 6BTA variants. It is designed for 12-valve engine applications only and cannot be used in 24-valve configurations. Not for use in applications equipped with a bolt-on crankshaft position sensor. Bearings are not included.

Specifications

• Engine: Cummins B-Series 5.9L (359 cu in), 6-Cylinder
• Stroke: 4.724 in
• Bore: 4.0157 - 4.0173 in
• Rod Journal: 2.7160 - 2.7170 in
• Main Journal: 3.2672 - 3.2682 in
• Flange: Flat, No Centering Ring, 8 Bolt Holes
• Snout: Helical Gear, 4 Bolt Holes, No Keyways, No Splines, Without Dowel Pin
• Weight: approx. 140 lbs
• 12-Valve engines only - not compatible with 24-valve applications

Compatible Equipment

Fits Case IH Combines: 1640, 1644, 2144

Fits Case IH Tractors: 1896, 2096, 5140, 5240, 5250

Fits Case IH Cotton Pickers / Harvesters: 1822, 2022, 2096, 1800

Fits Case Loaders: 621, 621C, 702, 721B, 721C, 821B, 821C

Fits Case Backhoes / Crawlers: 680K, 680L, 850D, 850E, 855D, 855E

Fits Case Wheel Loaders: W14B, W14C

Fits Champion Graders: 710, 710A, 710VHP

Note: This crankshaft fits Cummins 6B / 6BT / 6BTA 12-valve engines as installed across a wide range of agricultural, construction, and industrial equipment. Verify your engine CPL number and valve configuration before ordering.

Replaces Part Number(s):

3907804, 3929037, 3908032, 3907604, 3915258, 3915259, 3903828, 3905619, 5733N

Aftermarket Interchange Numbers

AK-3907804, AM3907804, J918324, J908032, J929037

New aftermarket replacement part - not remanufactured, not used.