A-3904679-AI Push Rod

One New Aftermarket Replacement Push Rod for Cummins B-Series Diesel Engines

This valve push rod transfers motion from the camshaft to the rocker arm for precise valve actuation in Cummins B-Series diesel engines. It fits the 12-valve 5.9L 6BT and 3.9L 4BT engine families used across a wide range of agricultural, construction, and on-highway equipment applications built from 1989 to 1998. Sold individually -- a 5.9L 12-valve 6BT engine requires 12 push rods while a 3.9L 4BT 2-valve engine requires 8. Verify your engine serial number (ESN) before ordering to confirm fitment.

Compatible Engines

• Cummins 6BT 5.9L (12-valve, 1989-1998)
• Cummins 6BTA 5.9L (12-valve, 1989-1998)
• Cummins 4B 3.9L (8-valve)
• Cummins 4BT 3.9L (turbocharged)
• Cummins 4BTA 3.9L (turbocharged)

Compatible Equipment Models

Fits Case IH: 5120 Tractor, 5220 Tractor, 8840 Windrower

Fits Case: 450C Crawler, 455C Crawler, 550 Crawler, 550E Crawler, 550G Crawler, 650G Crawler, 9010 Crawler, 570LXT Backhoe, 580K Backhoe, 580L Backhoe, 580SE Backhoe, 580SK Backhoe, 580SL Backhoe, 688 Crawler Excavator, 860 Trencher, W11B Wheel Loader, 95XT Skid Steer

Dodge/Ram: 1989-1998 Ram Pickup (5.9L Cummins Turbo Diesel)

Note: This part also fits many other Cummins 4B and 6B Series powered equipment. Always verify by engine serial number (ESN) before ordering.

Replaces Part Number(s):

A-3904679-AI, 3904679, 3923262, 3284377, 3904364, 3914172, 3901898

Aftermarket Interchange Numbers

HE3904679, K3904679, C3904679

New aftermarket replacement part - not remanufactured, not used.