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CUMMINS

CUMMINS 3910739 OEM FAN HUB BEARING – RAM 5.9L/6.7L (1989–2018)

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SKU:
CUM3910739
MPN:
3910739
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  • CUMMINS 3910739 OEM FAN HUB BEARING – RAM 5.9L/6.7L (1989–2018)
  • CUMMINS 3910739 OEM FAN HUB BEARING – RAM 5.9L/6.7L (1989–2018)
  • CUMMINS 3910739 OEM FAN HUB BEARING – RAM 5.9L/6.7L (1989–2018)
$274.51

Description

Genuine Cummins

Cummins 3910739 — Fan Hub Assembly Bearing (Ball Bearing)

MPN: 3910739  |  Also Known As: fan hub bearing, ball bearing  |  Cross-Refs: 4429639, 180935

Why This Part

  • OE bearing used in the engine-driven cooling fan hub.
  • Direct-fit for Ram 5.9L & 6.7L applications (see Fitment).
  • ✓ Restores smooth, quiet operation when the hub is noisy or seized.
  • OE dimensions for proper press-fit and longevity.
OE Fit Stock Replacement 1 Per Hub

Quick Specs

Type Ball bearing for fan hub assembly
OE Part # 3910739 (cross: 4429639, 180935)
Core Dimensions ID 35 mm · OD 64 mm · Width 37 mm
Qty Required 1 per fan hub (sold individually)

Verified Fitment (Automotive)

Year RangeEngineChassis
1989–1998 5.9L 12-Valve 6BT Ram 2500/3500
1998.5–2002 5.9L 24-Valve ISB (VP44) Ram 2500/3500
2003–2007 5.9L ISB (Common-Rail) Ram 2500/3500
2007.5–2018 6.7L ISB (Common-Rail) Ram 2500/3500

Industrial/Off-Highway: Also used on many 4BT/6BT/ISB fan hubs in equipment—verify by ESN.

Often Paired With

  • Fan hub/bracket assembly (varies by year/engine)
  • Fan clutch & fan blade (inspect for wobble/noise)
  • Serpentine belt (replace if glazed or cracked)
  • Fresh coolant if cooling work is performed

What’s In The Box

  • (1) Genuine Cummins Fan Hub Bearing (3910739)
  • Associated hub components sold separately.

Install Tips

  • Press bearing squarely with correct tooling; do not load through the rolling elements.
  • Confirm pulley alignment and belt tracking before startup.
  • If the hub seized, inspect the clutch, fan, and belt for collateral damage.

FAQ

WILL THIS FIT MY 1989–2018 RAM 5.9L/6.7L?

Yes—this OE bearing is listed for 1989–2018 Ram 2500/3500 with 5.9L or 6.7L Cummins (verify by VIN/ESN and hub style).

WHAT ARE THE BEARING DIMENSIONS?

Approx. 35 mm inner diameter, 64 mm outer diameter, and 37 mm width (OE specification range).

WHAT ARE COMMON CROSS-REFERENCE NUMBERS?

Common identifiers include 4429639 and 180935 in addition to 3910739.

WHAT SYMPTOMS INDICATE A FAILING FAN HUB BEARING?

Rattling/squealing from the hub, wobble, or visible belt misalignment. Replace promptly to avoid fan/clutch damage.

IS THIS A GENUINE CUMMINS PART?

Yes—OE Cummins 3910739 ball bearing for the fan hub assembly.

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Additional Information

Vehicle Year:
1989-2012
Vehicle Make:
DODGE
ENGINE:
5.9L / 6.7L CUMMINS
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