The 6.7 Cummins Precision Plus Long Block is built for exceptional durability and reliability, making it the perfect choice for street, towing, and work truck applications. This fully assembled long block includes a remanufactured cylinder head, upgraded internal components, and year-specific front covers and timing gear housings for seamless compatibility.

To enhance longevity, the hydraulic roller lifters found in 2019+ models are replaced with solid flat tappets and adjustable rockers, eliminating common failure points. Every engine is CNC-machined, balanced, and blueprinted for maximum efficiency and performance.

Manufactured by DandJ Precision Machine, this long block is pre-lubed with break-in oil and ready for installation.

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 strength and reliability
Replaces hydraulic roller lifters with solid flat tappets and adjustable rockers to eliminate failure points
Year-Specific Components - Ensures seamless compatibility using 2019-2020 or 2021-2024 front covers and timing gear housings
Cylinder Head -

Features:

• extra-large valve seats, a high-precision CNC valve job, and pressure testing for maximum durability
• Fully Assembled and Pre-Lubed - Includes oil pan, front cover, and pre-lubed break-in oil for easy installation and startup