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Engine Oil Pump Compatible With Dodge Ram 2500/Ram 3500 2003-2022 Isb 5.9L Diesel (6Bt 5.9)

C4988801A1
OEM PART NUMBERS:
• Cummins: 4988801 (Primary OEM number - ISB 5.9/6.7 front gear train)
• Cummins: 5291050 (Alternate Cummins OEM number)
• Cummins: 3957266 (Cross-reference number)
• Cummins: 3973398 (Cross-reference number)

SPECIFICATIONS:
• Drive Type: Gear-driven
• Gear Type: Spur Gear
• Mounting Style: Front Gear Train (FGT)
• Engine Family: ISB 5.9/6.7
• Displacement: 5.9-6.7L
• Condition: New

APPLICATION:
• Compatible with Dodge RAM 2500/RAM 3500 (2003-2022)
• Compatible with Dodge RAM 2500/RAM 3500 (2007-2022)

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals such as Nickel which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Was: $338.56
Sale: $193.46
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Description

DODGE PICKUP TRUCKS:
• Dodge RAM 2500/RAM 3500 ISB 5.9L Diesel (2003-2022)
• Dodge RAM 2500/RAM 3500 ISB 6.7L Diesel (2007-2022)


IMPORTANT:
Oil pump for Cummins ISB 5.9L and 6.7L in DODGE RAM 2500/3500 trucks (2003-2022). This is the front gear train mounted version designed for the Dodge truck application. Alts: 5291050, 3957266, 3973398. Do NOT confuse with industrial/agricultural ISB pumps (4939587, 3926203) which have different mounting configurations.

The ISB 5.9 (2003-2007) and ISB 6.7 (2007+) both use this pump. Failure symptoms: low hot idle pressure, oil pressure gauge dropping below 15 PSI when warm, bearing knock at startup. On Dodge trucks, the pump is behind the front gear cover — budget 6-8 hours for replacement. Replace front cover gasket, pickup tube O-ring, and inspect pickup screen for sludge. Common co-failure: oil cooler restriction from accumulated debris.

⚠️ Dodge Ram specific. Fits ISB 5.9 (2003-07) and 6.7 (2007+).

Details

Shipping Information

  • Item Requires Shipping
  • 5.0 lbs.
  • W8.0000” x H6.0000” x L10.0000”
  • Free Shipping!

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