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INTERSTATE MCBEE

INTERSTATE-MCBEE M-4955860 MAIN BEARING SET .010 89-18 5.9L/6.7L CUMMINS (AFTERMARKET REPLACEMENT)

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SKU:
MCBM-4955860
MPN:
M-4955860
Shipping:
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$64.62
724-785-4022

Description

 

Interstate-McBee M-4955860 Main Bearing Set .010 – 1989–2018 Cummins 5.9L/6.7L (B/ISB/QSB)

Premium .010" undersize (0.25 mm) main bearing set for Cummins B-Series 5.9L & 6.7L engines. Designed as an OEM-style aftermarket solution for crankshafts that have been ground .010" undersize on the journals. Built to meet OEM dimensions for consistent oil clearances, long service life, and quiet operation.

  • Exact sizing: .010" undersize (0.25 mm) for reground crank journals.
  • OEM-equivalent geometry: Helps maintain correct oil film and crank stability.
  • Complete set: Includes main bearing shells and thrust bearing set (application-dependent).
  • Aftermarket value: Interstate-McBee performance at a fraction of OEM pricing.

Specifications

Interstate-McBee Part M-4955860
OEM Cross-Reference Cummins 4955860 (also referenced with 3802071)
Size .010" undersize journal / 0.25 mm (service oversize on bearing wall)
Engine Family Cummins B / ISB / QSB (5.9L & 6.7L)
Positions Main bearing set with thrust
Typical Contents Main bearing shells + thrust bearing set

Vehicle Fitment

Always verify by Engine Serial Number (ESN) and journal size before ordering.

  • Dodge Ram 2500/3500 – 5.9L Cummins
    • 1989–1993 12-Valve 6BT
    • 1994–1998 12-Valve 6BT (P-pump)
    • 1998.5–2002 24-Valve ISB
    • 2003–2007 5.9L ISB (Common Rail)
  • Dodge Ram 2500/3500 – 6.7L Cummins
    • 2007.5–2018 6.7L ISB
  • Industrial/Commercial: ISB/QSB variants in vocational, ag, marine, and generator sets (confirm by ESN).

Installation Notes

  • Measure crank journals after machining; confirm .010" (0.25 mm) undersize.
  • Check oil clearances with Plastigage or mic/borescope tools during mock-up.
  • Cleanliness is critical—flush oil passages; use assembly lube on installation.
  • Observe main cap location/orientation; torque and angle to Cummins service manual specs.
  • If the block is align-honed, recheck clearances and thrust endplay.

Warranty

Interstate-McBee new engine parts carry manufacturer warranty coverage; terms may vary by category. Contact us for details or provide your ESN for application-specific support.

Cross-Reference & Equivalents

OEM Cummins 4955860 (.010" set). Also referenced with Cummins 3802071 in some catalogs. Note: .010" equals 0.25 mm service size.

Why Buy From CPP Diesel

  • ESN-verified fitment help from real diesel techs.
  • Fast shipping and easy returns.
  • Inventory depth for B-Series bearings, seals, and overhaul components.

FAQ

Is this set for standard cranks?
No. This is a .010" undersize set for cranks machined .010" under. For unmachined cranks, order a STD bearing set.
Does it fit both 12V 5.9L and 24V/6.7L engines?
Yes—this .010" set is cataloged for B/ISB/QSB 5.9L and 6.7L applications covering 1989–2018, but always verify by ESN and journal size prior to installation.
Are thrust bearings included?
Yes, the main bearing set includes the thrust bearing set for proper crankshaft endplay control.
Can I mix bearing sizes across mains?
Service manuals allow journal-specific sizing, but sets are sold in one size. Mixing sizes requires sourcing individual shells; measure each journal and follow Cummins guidance.
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Additional Information

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