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12_0743cb7c-33a7-4917-98b0-e42fe3066238 - Northline Parts

Oil Cooler 4975879 3161781 3081359 4386525 Fits Cummins Engine M11 CM ISM QSM

Alligator_819_x_200_px - Northline Parts

The Aftermarket Parts Specialists

$391.69
Sale price  $391.69 Regular price 

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Ships Nationwide in 2–4 business days.
This Oil Cooler is a high-quality aftermarket replacement part compatible with Cummins Engine M11 CM ISM QSM and matches OEM Part# 4975879, 3161781, 3081359, 4386525.

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I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks

Edward H. — Verified customer

Product Overview

This replacement oil cooler is designed to deliver efficient heat dissipation for heavy-duty diesel engines. Engineered for the Cummins M11 series, it helps maintain optimal operating temperatures, ensuring engine reliability and preventing premature wear caused by thermal breakdown.

Key Features & Performance

  • Maximum Thermal Efficiency: Designed for rapid heat transfer to protect critical engine components.
  • Durable Materials: Fabricated from high-grade aluminum to resist corrosion and structural fatigue.
  • Direct Replacement: Built to OEM specifications for an exact fit and easy installation.
  • Leak Prevention: Features reinforced seals and precision surfaces to ensure a secure oil-tight fit.

Fitment & Compatibility

  • Compatible Models: Cummins Engine M11, CM, ISM, QSM
  • Part Number(s): 4975879, 3161781, 3081359, 4386525

Technical Specifications

  • Part Type: Engine Oil Cooler
  • Construction: High-Strength Alloy

Frequently Asked Questions

Q: Does this oil cooler include installation hardware? A: This unit is sold as the cooler alone; reusing existing hardware or sourcing new gaskets is recommended during installation.

Q: Is this part compatible with QSM engines? A: Yes, this oil cooler is specifically designed for Cummins M11, ISM, and QSM engine series.

Compatibility may vary by serial number. Verify fitment before purchase.

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Service was professional and easy to work with. They kept me updated on my order and recommended a different part when the one I originally picked wasn’t going to work. Everything showed up as expected and the process was smooth overall.

- Customer, Chris D.

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