Unlock the full potential of your 2019-2024 RAM 2500/3500 6.7L Cummins. The ATS Aurora Compound Turbo System is the definitive solution for drivers who refuse to compromise between low-end responsiveness and top-end power. By replacing the restrictive factory single turbo (OEM 68444771AB), this kit transforms your RAM into a high-efficiency towing and street machine.

Since the early 2000's, ATS Diesel has pioneered compound turbo technology. This system utilizes a high-pressure (HP) VFR turbo—featuring either a 60mm or 64mm Billet Compressor Wheel—for instant spool-up and a massive Aurora 6000 low-pressure (LP) turbo for atmospheric volume. The result? A broad, relentless power band, significantly lower EGTs, and the reliability needed for heavy-duty applications.

Key Product Benefits

• Massive Power & Torque: Achieve incredible performance gains tailored to your needs. The 3000/6000 system supports power up to 750hp / 1400ft lbs, while the 4000/6000 system supports up to 900hp and 1750ft lbs. By sharing the workload across two units, this system generates boost pressures exceeding 60 PSI (head studs are strongly recommended if exceeding 45 PSI).
• Superior Thermal Management: To ensure maximum efficiency, the turbine housings on both turbos, the Vortex transfer manifold, and the included ATS Pulse Flow exhaust manifold are finished in a high-temp ceramic coating. This traps heat to drive the turbos more efficiently while providing substrate protection up to 1600°F and environmental protection up to 2000°F.
• Eliminate Turbo Lag: By mounting the large Aurora 6000 turbocharger over the smaller high-pressure turbo, the system maximizes space and airflow efficiency. The smaller VFR primary turbo (available in 60mm or 64mm configurations) provides immediate low-RPM response while the secondary Aurora 6000 delivers massive top-end volume.
• Lower EGTs & Better MPG: More air means more complete combustion. By providing a denser oxygen charge, this kit reduces heat stress on your 6.7L Cummins, prolonging engine life and improving fuel efficiency during heavy hauls.
• The "One-and-Done" Install: We take the guesswork out of the shop. Every single nut, bolt, washer, hose clamp, reinforced silicone boot, and gasket is included. This is a comprehensive solution designed for a one-time install—set it up once and never worry about your turbo system hardware again.

ATS Intelliboost: Intelligent Airflow Calibration

Choosing the right kit depends on your vehicle's current tuning state. The ATS Intelliboost Controller is the critical link that allows your RAM to recognize and utilize the massive increase in airflow without triggering diagnostic errors or derate modes.

• For Factory Calibrations: If your vehicle is running the factory Dodge/RAM tuning, you must use the kit with the Intelliboost electronics. The Intelliboost controller handles all necessary airflow calibrations in real-time, ensuring the ECM remains happy with the new compound turbo volume.
• For Third-Party Custom Tuning: If your vehicle has already been professionally tuned via third-party software that specifically accounts for compound turbo airflow, the calibration is already handled. In this case, you can opt for the "without electronics" kit.

Technical Product Features

• Dual Turbo Precision: Includes two brand-new turbochargers. The primary HP turbo features a new updated actuator and is mounted in the factory location. The Aurora 6000 atmospheric turbo features a 75mm compressor wheel inducer, 88mm turbine wheel inducer, 1.10 A/R, and a large T-4 turbo flange.
• Vortex Exhaust Transfer Manifold: Specifically engineered for a compact footprint and smooth exhaust gas travel between units, ensuring simple installation and maximum airflow efficiency.
• Ceramic Coated Protection: Turbine housings, the transfer manifold, and the ATS Pulse Flow exhaust manifold all feature a clean black ceramic finish that withstands substrate heat up to 1600°F and protects the engine bay environment up to 2000°F.
• Custom Coolant Management: Includes an ATS aluminum coolant reservoir designed for factory placement, clearing the necessary room for the large Aurora 6000 and associated plumbing.
• Premium Plumbing & Connections: Features reinforced silicone boots for high-pressure connections and an all-new A/C line that routes around the large turbocharger without requiring bending of the factory lines.
• Advanced Heat Shielding: Includes an ATS T4 turbo blanket for the Aurora 6000, capable of withstanding 2500°F peak and 1800°F sustained heat to keep under-hood temperatures at a minimum.
• Pulse Flow Manifold: Includes the ATS Pulse Flow 6.7L exhaust manifold with premium gaskets and ultra-strong 12.9 grade hardware for ultimate clamping force and reliability.
• Complete Install Kit: Includes a new exhaust downpipe for the Aurora 6000 and all necessary oil feed/drain lines using high-quality stainless steel braided crimp lines and steel AN fittings.

Vehicle Compatibility & Fitment

• Make: RAM / Dodge
• Model: 2500, 3500 Pickup
• Years: 2019, 2020, 2021, 2022, 2023, 2024
• Engine: 6.7L Cummins Turbo Diesel
• Replaces OEM Part: MOPAR 68444771AB

ATS Aurora Compound Kit Comparison: 2019-2024 RAM 6.7L

Choose the system that matches your performance goals and tuning requirements.

The ATS Diesel Difference

"Compound turbocharging is the ultimate expression of 'having your cake and eating it too.' By pairing our VFR technology with the legendary Aurora 6000, we’ve eliminated the tradeoff between quick street manners and massive towing capacity. This isn't just a bolt-on; it's a total engineering overhaul for the 2019-2024 RAM 6.7L Cummins platform."