Our Precision Plus 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 Reman Cylinder Head.
To address common issues found in 2019+ engines, we utilize components from the more reliable 2018 and older models. These older platforms have a superior track record of reliability compared to the newer engines. By replacing the hydraulic roller lifter setup with solid flat tappets and adjustable rockers, we enhance both reliability and performance. Depending on the year selected, we will use 2019-2020 or 2021-2024 front covers and timing gear housings. The older platform allows for seamless integration, as everything bolts in the same way, and ensures more readily available and less expensive parts down the road. We use NON CGI blocks to rebuild 19+ long blocks.
Key Features:
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Comprehensive Inspection: Disassembled, crack checked, inspected, and all threaded holes tapped, blasted, and cleaned before machining.
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Precision Machining: CNC blueprinted, bored, honed, and deck surfaced. Each crank is checked for straightness and size and repaired as needed.
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Thorough Cleaning: Blocks are cleaned and inspected to double-check our machining processes. We measure all bearing clearances, piston-to-wall clearance, piston protrusion, deck, and hone surface. All pistons and rods are double-checked for proper spec and ring gaps corrected as needed.
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Controlled Assembly: Assembled in a clean room by skilled technicians, ensuring top quality.
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Precision Cylinder Heads: Disassembled, crack-checked, with stock seats replaced by extra-large heavy-duty valve seats. CNC precision valve job performed with new seat and guide machine. Meticulously cleaned, inspected, assembled, and pressure-checked.
Quality Control:
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Multiple Inspections: Each part is inspected multiple times by different team members to ensure the best quality control.
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Pre-lubed and Painted: Engines are painted black and shipped pre-lubed with break-in oil and filter included.
Availability:
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Compatibility: Available for all common rail models from 2007.5-2018
Build Includes:
- New Pistons
- New head, main, and rod bolts
- New main and rod bearings
- D&J Precision Plus Reman cylinder head
- Reconditioned stock cam
- All new gaskets
- New tappets
- New oil cooler
- New oil pump
- New crankshaft seals
- New oil pan installed
- Rear main seal installed
- Reconditioned OEM connecting rods
- Front cover installed
- Pre-lubed with break-in oil and filter included
- Pressure-checked cooling system and crankcase to ensure no leaks on installation
Precision Plus Reman Cylinder Head Includes:
- All new HD bronze valve guides installed
- Heavy-duty extra-large intake and exhaust seats installed
- Thread-in soft plugs under the valve cover
- High-precision CNC valve job performed
- New valve seals installed
- New stock springs
- New soft plugs
- Resurfaced
Optional Upgrades:
- D&J Billet Timing Cover (2021+ Only)
- Billet valve cover
- Billet black valve cover
Shipping and Core Charges:
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Core Charge: $3500.00 (Cores can be sent in beforehand to eliminate this charge*)
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Shipping: Varies for each purchase.
Cores must include usable crank, cylinder head, rocker bases, oil pan and bolts, pickup tube, timing gear housing, timing gear housing cover and bolts, rear seal housing and bolts, piston cooling nozzles, bolts, lower rocker box, and bolts. If there are issues with any of the parts, you will not be charged the full core amount, only the amount needed to replace the bad part. Our core charge is based on re-manufactured parts.
