BD Diesel DJPLB100075 Heavy Hauler Long Block Engine | 2019-2020 RAM 2500/3500 6.7L Cummins

Features:

• Rated for up to 700 HP
• Built for towing and heavy-duty applications
• Stage 1 high-performance cylinder head
• 5-axis CNC ported for improved airflow
• Oversized heavy-duty intake and exhaust seats
• Street/towing camshaft lowers EGTs
• Reduces EGTs by 200-300 degrees
• Improves fuel efficiency and engine reliability
• Replaces hydraulic lifters with solid flat tappets
• Adjustable rockers for greater durability
• Fully assembled and pre-lubed for quick install
• Includes oil pan, front cover, and rocker box

Premium Drop-In Long Block Engine for 6.7L Cummins

If your truck is built for towing, hauling, or putting in long hours on the job, your engine needs to be just as tough. The stock 6.7L Cummins is known for its durability, but when you're pushing it to its limits, factory components can start to show their weaknesses. Instead of rolling the dice on a rebuild, the BD Diesel Heavy Hauler Long Block gives you a fully assembled, high-performance engine designed specifically for hard-working trucks. It’s built to handle extreme loads while improving efficiency, reliability, and overall engine longevity. One of the biggest upgrades in this engine is the Stage 1 High-Performance Cylinder Head. Unlike a stock head, which can restrict airflow and struggle with heat dissipation, this version is 5-axis CNC-ported for improved efficiency. It features oversized, heavy-duty intake and exhaust seats to keep everything sealed tight under load. Whether you're towing a trailer up a steep grade or hauling heavy equipment daily, this upgraded head ensures better airflow, smoother power delivery, and reduced stress on your turbo.

Impressive Heat Management & Durability

Managing heat is one of the biggest challenges for towing applications, and this engine is built to handle it. The included street/towing camshaft is designed to lower exhaust gas temperatures by 200-300 degrees. This not only helps prevent overheating but also improves overall efficiency, making it easier to maintain power on long pulls. A cooler-running engine is a more reliable engine, and this upgrade helps extend the life of critical components while improving fuel economy. BD Diesel also made a key durability upgrade by incorporating components from earlier Cummins models. The factory 2019+ hydraulic roller lifters have been replaced with solid flat tappets, and the factory rockers have been upgraded to adjustable versions. These changes improve valvetrain stability, reduce wear, and enhance long-term reliability—especially for trucks that see heavy loads or extended run times.

High-Quality Head Studs & Straightforward Installation

To ensure this long block can handle serious work, BD Diesel reinforces it with custom ARP 9/16” head studs. These provide superior clamping force, reducing the risk of head gasket failure under high-boost conditions. Whether you're running stock power or a tuned setup, this upgrade keeps everything sealed and secure, even in the most demanding conditions. Installation is simple, thanks to the fully assembled, pre-lubed design. The engine comes complete with an oil pan, front cover, and machined rocker box, making it a direct replacement for 2019-2020 Ram 6.7L Cummins applications. Instead of wasting time tracking down parts or dealing with the hassle of machining and assembly, this long block arrives ready to drop in and get to work.

Fits: 2019, 2020 Ram 6.7L Cummins

Core Charge: Refundable Core Charge of $3500 applies.

Note: Not for sale on licensed California vehicles