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12_ad4d7099-4dcf-4401-bc1a-c0722b12abb8 - Northline Parts

Belt Tensioner Pulley Assembly for Cummins ISX Engine Freightliner 3104149 89448

Alligator_819_x_200_px - Northline Parts

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$56.79
Sale price  $56.79 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

Belt Tensioner Pulley Assembly for Cummins ISX Engine Freightliner 3104149 89448

Maintain the efficiency of your heavy-duty engine with this high-quality aftermarket belt tensioner pulley assembly. Designed specifically for Cummins ISX engines, this aftermarket part ensures consistent belt tension to prevent slippage and reduce wear on your engine's drive system. It serves as a reliable and cost-effective alternative to OEM parts, providing the performance you need to keep your Freightliner on the road.

Key Features & Benefits

  • Constructed with heavy-duty materials for enhanced durability and longevity.
  • Ensures precise belt alignment and tension for optimal engine performance.
  • Features high-quality bearings to minimize noise and vibration during operation.
  • Designed as a direct aftermarket replacement for a seamless and straightforward installation.
  • Engineered to withstand the demanding heat and pressure of commercial engine environments.

Compatible Models

  • Cummins ISX Series Engines
  • Freightliner Trucks
  • Cross-Reference Part Numbers: 3104149, 89448

Product Specifications

  • Product Type: Belt Tensioner Pulley Assembly
  • Part Status: Aftermarket Replacement
  • Engine Compatibility: Cummins ISX
  • Reference Numbers: 3104149, 89448

Frequently Asked Questions

Is this an OEM part? No, this is a premium aftermarket replacement part designed to meet or exceed the functional standards of the original equipment.

How do I confirm compatibility? To ensure a correct fit, please cross-reference your current part number with 3104149 or 89448. You may also verify fitment using your engine's serial number or by consulting your vehicle’s service manual.


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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