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Oil Cooler Cover Filter Head 3974325 for Cummins 6CT ISC QSC 8.3 ISL QSL 8.9L

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$243.99
Sale price  $243.99 Regular price 

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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

Oil Cooler Cover Filter Head 3974325 for Cummins 6CT ISC QSC 8.3 ISL QSL 8.9L

Ensure your engine maintains optimal performance with this high-quality aftermarket oil cooler cover and filter head. Specifically designed for Cummins 8.3L and 8.9L engines, this part serves as a reliable replacement for your existing assembly. It is engineered to provide efficient oil cooling and filtration, helping to protect your engine from overheating and premature wear. This is a premium aftermarket component designed to offer a perfect fit and long-lasting durability for your heavy-duty applications.

Key Features & Benefits

  • Durable construction built to withstand high pressure and temperature.
  • Precision-engineered for a secure, leak-free installation.
  • Cost-effective aftermarket solution that meets or exceeds standard performance.
  • Enhances engine longevity by ensuring proper oil temperature regulation.

Compatible Models

  • Cummins 6CT
  • Cummins ISC / QSC 8.3
  • Cummins ISL / QSL 8.9L

Product Specifications

  • Part Number: 3974325
  • Component Type: Oil Cooler Cover and Filter Head
  • Material: High-strength casting
  • Compatibility: Aftermarket replacement for Cummins 8.3L and 8.9L series

Frequently Asked Questions

Is this an OEM part?
No, this is a premium aftermarket part designed to replace the original equipment manufacturer component while maintaining high quality and performance standards.

How do I confirm compatibility?
You can confirm compatibility by matching your current part number to 3974325 or by verifying that your engine belongs to the Cummins 6CT, ISC, QSC, ISL, or QSL families. If you are unsure, please check your engine's serial number.


Important: This is a premium aftermarket part and is not manufactured by the original equipment manufacturer (OEM). Brand names and model numbers are used for reference purposes only. Compatibility may vary depending on the machine's serial number. Please 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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