D&J - Precision Plus Long Block - 2004.5-2007 Dodge 5.9L Cummins - DJPLB100014

Part # DJPLB100014

The 5.9 Common Rail Cummins Precision Plus Reman Long Block is a fully assembled, stock replacement engine solution for 2004.5-2007 Dodge Ram 2500 & 3500 trucks. Each unit is CNC blueprinted, precision-machined, and assembled with new pistons, bearings, and a D&J Precision Plus Reman Cylinder Head to ensure superior durability and power. This long block includes an oil pan, front timing cover, and pre-lubed break-in oil, making installation hassle-free. Manufactured by D&J Precision Machine, this engine is built to exceed OEM reliability and performance standards.

Key Features

• Comprehensive Inspection: Disassembled, crack checked, inspected, and all threaded holes tapped, blasted, and cleaned before machining.
• Precision Machining: CNC blueprinted, bored, honed, and deck surfaced. Each crank is checked for straightness and size and repaired as needed.
• 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.
• Controlled Assembly: Assembled in a clean room by skilled technicians, ensuring top quality.
• Precision Cylinder Heads: Disassembled, crack-checked, with stock seats replaced by extra-large heavy-duty valve seats. CNC precision valve job performed with Newen seat and guide machine. Meticulously cleaned, inspected, assembled, and pressure-checked.
• Rated for up to 600 HP - Designed for demanding work applications, though high-horsepower tuning is not recommended for heavy towing
• Cylinder Head - Features HD bronze valve guides, oversized heavy-duty seats, and a CNC high-performance valve job for increased airflow and efficiency
• High-Quality Internal Components - Built with new pistons, bearings, tappets, oil cooler, and oil pump to maximize engine longevity
• Fully Assembled & Pre-Lubed - Includes oil pan, front cover, and pre-lubed break-in oil for easy installation and startup
• Direct Replacement Fit - Designed for 2004.5-2007 Dodge Cummins 5.9L Common Rail applications

Quality Control

• Multiple Inspections: Each part is inspected multiple times by different team members to ensure the best quality control.

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

Core Returns

Cores must include a usable block, crankshaft, cylinder head, timing gear housing, piston cooling nozzles, and bolts.  Freight charge for core return will be deducted from the core charge.

D&J PRECISION MACHINE

Located in the heart of Ohio, D&J Precision Machine emerged from humble beginnings, where Founder Drew Pumphrey’s passion for diesel performance led to a revolution in the diesel engine industry. With a modest investment, Drew’s drive turned D&J into a diesel powerhouse, pushing boundaries in Zanesville and Cambridge, Ohio.

As a proud member of the Burnout Brands group of companies, D&J Precision Machine stands with BD and Monster Transmission as a beacon of excellence in the automotive aftermarket sector.

You can tell if you have a Early 2004 or Late 2004.5 Cummins by checking the engine's horsepower rating, which is printed on the valve cover sticker; 305hp indicates an early 2004, while 325hp indicates a 2004.5. Alternatively, check the turbo's wastegate (electronic for 2004.5, mechanical for early 2004) or the location of the throttle position sensor (at the pedal for 2004.5, near the intake horn for early 2004).