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Unmatched Performance & Reliability

D&J 5.9 and 6.7 Common Rail Cummins HP Reman Long Blocks

At D&J Precision Machine, we specialize in providing top-tier, fully assembled 5.9 and 6.7 Common Rail Cummins HP Reman Long Blocks. Designed for the high-performance diesel industry, our long blocks are crafted with precision and expertise, ensuring peak performance and durability.

Unmatched Performance & Reliability

D&J 5.9 and 6.7 Common Rail Cummins HP Reman Long Blocks

At D&J Precision Machine, we specialize in providing top-tier, fully assembled 5.9 and 6.7 Common Rail Cummins HP Reman Long Blocks. Designed for the high-performance diesel industry, our long blocks are crafted with precision and expertise, ensuring peak performance and durability.

Product Features

  • Fully Assembled Long Blocks: Each unit comes fully assembled, including the oil pan and front timing cover, for a hassle-free installation.
  • Thoroughly Inspected and Machined: Our blocks undergo rigorous inspection, crack checking, and machining. We ensure every threaded hole is tapped, and each block is CNC blueprinted, bored, honed, and deck surfaced.
  • Quality Components: New Pistons, OEM bolts, bearings, gaskets, and more, are used for superior performance.
  • Expertly Reconditioned: Components like cam, connecting rods, and cylinder heads are meticulously reconditioned for reliability.
  • Advanced Cylinder Head Design: Our HP Reman Cylinder Heads feature new heavy-duty valve seats, bronze guides, and high-performance CNC valve jobs.
  • Strict Quality Control: Multiple inspections throughout the process by our skilled team members ensure unparalleled quality.
  • Ready-to-Install: Pre-lubed with break-in oil and filter, our long blocks are ready for immediate installation.

Optional Upgrades

Enhance your engine with optional upgrades like D&J Billet parts, ARP 625 head studs, HD valve springs, and more.

Core Exchange Program

Send in your core components 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.
    Nationwide Shipping: We offer reliable shipping options across the country.

SHOP NOW

Product Features

  • Fully Assembled Long Blocks: Each unit comes fully assembled, including the oil pan and front timing cover, for a hassle-free installation.
  • Thoroughly Inspected and Machined: Our blocks undergo rigorous inspection, crack checking, and machining. We ensure every threaded hole is tapped, and each block is CNC blueprinted, bored, honed, and deck surfaced.
  • Quality Components: New Pistons, OEM bolts, bearings, gaskets, and more, are used for superior performance.
  • Expertly Reconditioned: Components like cam, connecting rods, and cylinder heads are meticulously reconditioned for reliability.
  • Advanced Cylinder Head Design: Our HP Reman Cylinder Heads feature new heavy-duty valve seats, bronze guides, and high-performance CNC valve jobs.
  • Strict Quality Control: Multiple inspections throughout the process by our skilled team members ensure unparalleled quality.
  • Ready-to-Install: Pre-lubed with break-in oil and filter, our long blocks are ready for immediate installation.

Optional Upgrades

Enhance your engine with optional upgrades like D&J Billet parts, ARP 625 head studs, HD valve springs, and more.

Core Exchange Program

Send in your core components 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.
    Nationwide Shipping: We offer reliable shipping options across the country.

SHOP NOW

Made in the USA

In the Heart of Ohio

Financing

AVAILABLE WITH AFFIRM

GIVE US A CALL

(740) 297-7223

Find a Dealer

Use our Dealer Locator

Made in the USA

In the Heart of Ohio

Financing

AVAILABLE WITH AFFIRM

GIVE US A CALL

(740) 297-7223

Find a Dealer

Use our Dealer Locator

JOIN OUR NEWSLETTER

Be the first to hear about new products, deals, and more.

JOIN OUR NEWSLETTER

Be the first to hear about new products, deals, and more.