null AW-17220743903, GT-K4ZB5X3V
INTERSTATE MCBEE

INTERSTATE MCBEE M-3902332 CAMSHAFT WOODRUFF KEY 89–18 5.9L/6.7L CUMMINS (AFTERMARKET REPLACEMENT)

(No reviews yet) Write a Review
SKU:
MCBM-3902332
MPN:
M-3902332
Shipping:
Calculated at Checkout
$3.99

Description

Interstate-McBee M-3902332 Camshaft Woodruff Key – 1989–2018 Cummins 5.9L/6.7L

The Interstate-McBee M-3902332 woodruff (camshaft) key restores precise gear indexing on Cummins 5.9L & 6.7L B-Series/ISB engines. Built to OEM-style dimensions for reliable timing alignment and long-term durability—ideal for cam swaps, timing service, or rebuilds.

  • Direct replacement: OEM-style fit for Cummins 3902332.
  • Accurate timing: Locks the cam gear to prevent slip and maintain proper valve timing.
  • Aftermarket value: Interstate-McBee quality at a budget-friendly price point.
  • Drop-in install: No modifications required when used with the correct cam/gear.

Specifications

Interstate-McBee P/N M-3902332
OEM Reference Cummins 3902332
Key Type Plain woodruff key (camshaft)
Nominal Size 4.0 mm woodruff (per application listings)
Engine Families Cummins B / ISB / 5.9L & 6.7L
Vehicle Years 1989–2018 Dodge Ram 2500/3500 (5.9L/6.7L)

Vehicle Fitment

Always confirm by ESN (engine serial number) for exact compatibility.

  • Dodge Ram 2500/3500 – Cummins 5.9L (12V & 24V) – 1989–2007
  • Dodge/Ram 2500/3500 – Cummins 6.7L – 2007–2018
  • Additional applications: Common on Cummins industrial B-series (e.g., 4BT/6BT) where specified by ESN.

Installation Notes

  • Inspect camshaft slot and gear for wear; replace any damaged components.
  • Seat the key fully; align timing marks and torque fasteners per the Cummins service manual.
  • Use new seals/gaskets as required when servicing the front cover and gear train.

Cross-Reference

OEM Cummins 3902332. Also referenced in distributor catalogs alongside 4928969.

Why Buy From CPP Diesel

  • Real diesel techs for ESN-verified fitment support.
  • Fast shipping and easy returns.
  • Deep Cummins B-series catalog for one-cart timing service: cam gears, seals, front covers, hardware.

FAQ

Will this key fit both 5.9L (12V/24V) and 6.7L Cummins?
Yes—M-3902332 matches OEM 3902332 commonly used across 1989–2018 5.9L and 6.7L applications. Confirm via ESN for edge cases or mixed-year builds.
Is this the correct thickness?
Retail listings identify this part as a 4.0 mm woodruff key for B-series/ISB camshaft fitment. Always verify dimensions during assembly.
When should I replace the cam key?
Replace any time the key shows rounding/peening, when swapping cams/gears, or if timing slip is suspected.
Does this also fit 4BT/industrial engines?
Frequently used on 3.9L/5.9L industrial B-series; verify by ESN and build spec before ordering.
View AllClose

Additional Information

YEAR:
1989-2018
MAKE:
DODGE
ENGINE:
5.9L,6.7L
View AllClose

0 Reviews

View AllClose