Application

If you are in need of the best performance for a work truck the Heavy Hauler is the fit for you. With an unmatched balance of upgrades without wasting your hard earned money on things that do not provide return on investment. We designed this engine platform to help with airflow and improve efficiency. It also has some entry level strength upgrades to help with head gasket sealing and bottom end strength.

Product Features

  • Fully Assembled Engine: Includes oil pan, rear crank seal, front cover, crank seal, and oil filter housing.
  • Stage 1 High-Performance Cylinder Head: Boosts airflow, significantly reducing EGT by 200-300 degrees, while improving fuel economy.
  • Increased Strength and Durability: Every engine comes with a camshaft designed for towing, heavy duty 7/16 pushrods, 9/16 head studs and main studs for maximum durability and performance.
  • Cylinder Head Durability Upgrades: All D&J Performance Cylinder Heads, come with thread in freeze plugs, and heavy-duty seats for unparalleled strength.
  • Complete CNC Blueprinting and Balancing: Every engine is meticulously machined with many quality control checks to ensuring optimal performance and longevity.
  • Aesthetics and Protection: Painted black, pre-lubed with break-in oil and filter, ready for action.
  • Quality Assurance: Every engine gets spun up to verify it makes oil pressure. We pressure check the crankcase, and cooling system to check for leaks to ensure a quick and easy install process.

Customization at its Best

Optional Upgrades: Choose from billet timing covers, valve covers in different finishes, and more to personalize your engine.

Core Exchange Program

Send in your core components ahead of time and save on the core charge. Our fair core charge policy is based on the condition of the parts, ensuring transparency and customer satisfaction.

Why D&J Precision Machine?

  • Expert Craftsmanship: With years of experience in the industry, we understand what your diesel engine needs.
  • Customer-Centric Approach: We believe in building products that meet and exceed your expectations.
  • Quality Assurance: Every product undergoes stringent quality checks to ensure it meets our high standards.
  • Worldwide Shipping: We offer reliable shipping options throughout the world.
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  • Heavy Hauler 5.9 Cummins Common Rail Long Block
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    Heavy Hauler 5.9 Cummins Common Rail Long Block

    Heavy Hauler 5.9 Cummins Long Block Our Heavy Hauler 5.9 Cummins Long Blocks come fully assembled, including the oil pan, rear crank seal, front cover and crank seal, and oil filter housing, along with our Stage 1 High-Performance Cylinder Head. We include a street/towing...
    $12,124.99
    $12,124.99
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  • Heavy Hauler 2019+ Long BlockHeavy Hauler 2019+ Long Block
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    Heavy Hauler 2019+ Long Block

    Heavy Hauler 6.7 Cummins Long Block (2019+)   Our Heavy Hauler 6.7 Cummins Long Blocks for 2019+ models come fully assembled, including the oil pan, rear crank seal, front cover and crank seal, and oil filter housing, along with our Stage 1 High-Performance Cylinder...
    $14,855.99
    $14,855.99
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  • Heavy Hauler 6.7 Cummins Common Rail Long Block
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    Heavy Hauler 6.7 Cummins Common Rail Long Block

    Heavy Hauler 6.7 Cummins Long Block Our Heavy Hauler 6.7 Cummins Long Blocks come fully assembled, including the oil pan, rear crank seal, front cover and crank seal, and oil filter housing, along with our Stage 1 High-Performance Cylinder Head. We include a street/towing...
    $12,124.99
    $12,124.99
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  • Heavy Hauler 12v P-Pump Long Block

    Heavy Hauler 12v P-Pump Long Block

    Heavy Hauler 12V P-Pump Cummins Long Block Our Heavy Hauler 12V Cummins Long Blocks come fully assembled, including the oil pan, rear crank seal, front cover and crank seal, and oil filter housing, along with our HP Reman Cylinder Head utilizing a new casting....
    $12,124.99
    $12,124.99