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INTERSTATE MCBEE

INTERSTATE-MCBEE M-4988801 OIL PUMP 03–18 5.9L/6.7L CUMMINS (AFTERMARKET REPLACEMENT)

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SKU:
MCBM-4988801
MPN:
M-4988801
Shipping:
Calculated at Checkout
$150.82
724-785-4022

Description

Interstate-McBee M-4988801 Oil Pump – 03–18 5.9L/6.7L Cummins (Aftermarket Replacement)

Restore factory oil pressure and reliability with the Interstate-McBee M-4988801 oil pump. Built to OEM-equivalent specs for 2003–2018 Cummins ISB applications, this pump uses straight-cut gears for consistent flow and long service life. A cost-effective replacement for high-mileage engines and fresh rebuilds.

  • Direct-fit replacement: Matches OEM footprint and flow targets for ISB platforms.
  • Straight-cut gear set: Stable delivery and durability under towing and daily use.
  • OE-style quality: Manufactured to meet OEM form, fit, and function.
  • Aftermarket value: Interstate-McBee performance at a fraction of OEM list price.

Specifications

Interstate-McBee PN M-4988801
OEM Cross-Refs 4988801, 5291050, 3973398, 3957266
Pump Gear Type Straight-cut
Category Lubricating oil pump (engine)
Includes Complete oil pump assembly (no pickup tube or bolts)

Vehicle Fitment

Always confirm by VIN/ESN for exact build dates and calibrations.

  • Ram 2500/3500 – 5.9L Cummins ISB (Common Rail)
    • Model Years: 2003–2007
  • Ram 2500/3500/4500/5500 – 6.7L Cummins ISB
    • Model Years: 2007.5–2018 (select 2007 models start mid-year)
  • Not compatible: 1989–2002 12-valve / early 24-valve 5.9L (uses different pump)

Install Notes

  • Prime the pump with clean engine oil during assembly; verify free rotation.
  • Follow Cummins service manual procedures and torque specs for your ESN.
  • Inspect pickup tube O-ring, pan cleanliness, and pressure relief function.

Warranty

Interstate-McBee new engine components include manufacturer warranty support. For terms and coverage details for oil pumps, contact us or consult the policy sheet.

Cross-Reference

Direct replacement for Cummins 4988801. Common aftermarket and OEM references include 5291050, 3973398, and 3957266.

Why Buy From CPP Diesel

  • ESN-verified fitment help from diesel specialists
  • Fast shipping, easy returns
  • One-stop shop for related gaskets, bolts, and filters

FAQ

Will this pump fit both 5.9L and 6.7L Cummins?
Yes—fits 5.9L ISB (2003–2007) and 6.7L ISB (2007.5–2018) Ram applications. Verify with VIN/ESN for mid-year changes.
Is this an OEM Cummins pump?
No—this is an aftermarket Interstate-McBee pump built to OEM-equivalent specifications. OEM Cummins reference is 4988801.
What gear style does it use?
Straight-cut gears for consistent pressure and durability under load.
Do I need new bolts or a pickup tube?
The pump assembly is included; related hardware and pickup components are sold separately. Inspect and replace as needed.
Will this work on 1989–2002 5.9L engines?
No—those earlier 5.9L engines use a different oil pump design. This unit is for 2003+ common-rail and 6.7L platforms.
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Additional Information

YEAR:
2003-2018
MAKE:
DODGE
ENGINE:
5.9L,6.7L
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