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10_26fa7564-c622-4a73-89c5-ed6f124d4e85 - Northline Parts

Engine Block Heater 3500022 For Cummins QSB 3.9 4.5 5.9 6.7 Paccar PX-6 PX-7

Alligator_819_x_200_px - Northline Parts

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$84.29
Sale price  $84.29 Regular price 

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Efficient Cold Weather Starting:

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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

Engine Block Heater 3500022 for Cummins QSB 3.9, 4.5, 5.9, 6.7 & Paccar PX-6, PX-7

Ensure your engine starts reliably even in the harshest winter conditions with this high-quality aftermarket engine block heater. Designed specifically for Cummins and Paccar engines, this heating element pre-warms the engine coolant to facilitate easier cold starts, reduce engine wear, and decrease the strain on your battery. This is a premium aftermarket replacement part, not an OEM component, engineered to provide dependable performance and longevity at an exceptional value.

Key Features & Benefits

  • Efficient Cold Weather Starting: Pre-heats the engine block to ensure rapid ignition in freezing temperatures.
  • Extended Engine Life: Reduces friction and internal stress during initial startup by maintaining optimal lubricant flow.
  • High-Grade Construction: Built with durable materials to resist corrosion and withstand high operating temperatures.
  • Aftermarket Reliability: A precision-engineered alternative that meets or exceeds standard performance requirements.

Compatible Models

  • Cummins QSB 3.9
  • Cummins QSB 4.5
  • Cummins QSB 5.9
  • Cummins QSB 6.7
  • Paccar PX-6
  • Paccar PX-7

Product Specifications

  • Part Number: 3500022
  • Product Type: Engine Block Heater
  • Condition: Brand New Aftermarket
  • Application: Industrial and Heavy-Duty Diesel Engines

Frequently Asked Questions

Is this an OEM part?
No, this is a premium aftermarket part designed to replace the original equipment. It is not manufactured by the OEM, but it is built to the same functional specifications.

How do I confirm compatibility?
To ensure this heater fits your engine, please cross-reference the part number 3500022 with your existing unit or consult your engine service manual. Checking your engine's serial number is the most accurate way to verify fitment.


Important: This item is an aftermarket replacement part sold by Northline Parts. It is not an OEM part unless specifically stated. Any brand names, model names, or part numbers are used for compatibility reference only. Please verify fitment by comparing your original part, product photos, and vehicle or equipment details before ordering.

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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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