The 6.7 Common Rail Cummins Precision Plus Reman Long Block is a fully assembled, stock replacement engine designed to deliver OEM reliability with upgraded durability. This long block ensures smooth operation and long-lasting reliability by featuring CNC blueprinting, precision machining, and upgraded internal components.

The D and J Precision Plus Reman Cylinder Head, included in this build, improves durability and efficiency with HD bronze valve guides, oversized heavy-duty seats, and a high-precision CNC valve job. Shipped pre-lubed with break-in oil and including an oil pan and front timing cover, this long block is ready for easy installation.

Manufactured by D and J Precision Machine, this engine is built to exceed stock performance and reliability standards.

Warranty:

Parts

24-Months

Labor

24-Months

Emissions:

This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement Parts included. (EMS:4)

Features:

Rated for up to 600 HP - Designed for demanding work applications, though high-horsepower tuning is not recommended for heavy towing
Precision CNC Machining - Fully blueprinted, bored, honed, and deck-surfaced for maximum durability and efficiency
Cylinder Head -

Features:

• HD bronze valve guides, oversized heavy-duty seats, and a CNC high-precision valve job for efficient airflow and longevity
• Upgraded Internal Components - Built with new pistons, bearings, tappets, oil cooler, and oil pump to enhance engine life and reliability
• Fully Assembled and Pre-Lubed - Includes oil pan, front cover, and pre-lubed break-in oil for easy installation and startup
• Direct Replacement Fit - Designed for 2007.5-2012 Dodge Cummins 6.7L Common Rail applications