6.7 Cummins Compound Turbo Kit (S475) for 2010–2012 Dodge Ram
Twin Turbo S475 Over DPS 63mm for 6.7L Cummins Performance
Includes 360° Thrust Bearing in Every DPS Turbo – 60% More Load Capacity
Full Compound Kit – Includes Everything for Installation
Turbo Options:
Stage 2.5 Max 625hp S362/68/.70 over S475
Stage 3 Max 650hp S362/68/.70 over S480
Stage 3.5 Max 625hp S362/68/.70 Ball Bearing over S475
Stage 4 Max 650hp S363/68/.70 over S475
Stage 4B Max 675hp S363/68/.70 over S480
Stage 4.5 Max 650hp S363/68/.70 Ball Bearing over S475
Stage 4.5B Max 675hp S363/68/.70 Ball Bearing over S480
Stage 5 Max 700hp S363/73/.80 over S475
Stage 5.5 Max 700hp S363/73/.80 Ball Bearing over S475
Stage 6 Max 750hp S363/73/.80 over S480
Stage 6.5 Max 750hp S363/73/.80 Ball Bearing over S480
Stage 8 Max 1100hp S366/73/.80 over S480
Stage 8.5 Max 1100hp S366/73/.80 Ball Bearing over S480
What Makes This Kit Unique?
- Direct bolt-on fit — no cutting or fabrication required
- High-flow 3-piece exhaust manifold (pre-tapped ports included)
- Stock oil return line — no extra block modification needed
- Largest air filter in the industry
- Compatible with OEM exhaust for 2003–2012 models
- Kevlar-lined silicone low-pressure charge pipe for easier install and improved flow
- High-pressure chrome-plated aluminum charge pipe
- Small turbo offers 150% greater wastegate capacity
- Cast hot pipe with built-in external wastegate port (stronger than welded alternatives)
- Polished DPS small turbo + Borg Warner S475 (75mm) large turbo
- Support bracket for lower turbo
- Adjustable boost pressure
- Includes dual oil drain lines
Performance & Driveability
The DPS 6.7L Cummins Compound Turbo Kit offers near-stock spool-up with significantly increased airflow. Designed for towing, racing, sled pulling, or high-performance street driving. Customers regularly report a 300–500°F drop in EGTs compared to single turbo setups.
Boost pressure typically exceeds drive pressure — unlike single turbos, which often suffer from high drive-to-boost ratios. This compound setup improves throttle response and increases horsepower across the full RPM range.
Horsepower Range:
Optimized for builds between 350 HP and 800+ HP. Designed with CAD/CAM and tested using CFD (Computational Fluid Dynamics) software for maximum airflow, durability, and perfect fitment.
What’s Included:
- DPS Turbo (different sizes to choose from)
- S475 Turbo (75mm comp / 96mm turbine / 1.32 A/R housing)
- 3-Piece exhaust manifold
- High-temp steel braided oil lines (supply & drain)
- V-band clamps, mounting bolts, gaskets, and adapters
- Cast iron elbow, support brackets, chrome & silicone charge pipes
- Complete intake system with oversized air filter
- 4" exhaust downpipe and all clamps (high-torque & low-torque)
- Installation instructions
Important Notes:
- Requires DPF & EGR delete and a compatible tuner (e.g., Smarty) for off-road use
- Most S300 turbos are compatible with this kit
- This system is for off-road use only in emissions-controlled areas
Learn more about compatible 6.7L Cummins add a turbo upgrade options
Upgrade your Cummins with a proven compound system that delivers OEM-like fitment with serious power gains.
Compounds keep quick spool for drivability while adding the airflow you need up top. Customers typically report 300–500°F lower EGTs versus comparable single-turbo setups, along with stronger throttle response and a healthier drive-to-boost ratio.
It’s a true bolt-on system built around a DPS high-pressure S300 and a BorgWarner S475/S480 atmosphere turbo, plus a 3-piece high-flow exhaust manifold, cast hot pipe with external wastegate port, oversized intake, downpipe, lines, clamps, and brackets.
Yes. That’s the main win for compounds. The small turbo lights fast for grade starts, and the big turbo carries airflow on long pulls, which helps keep EGTs in check. Users commonly see 300–500°F EGT reductions vs single turbos.
Adding the Turbonator® VGT as the high-pressure unit gives you faster spool, stronger low-RPM torque, wider usable powerband, and optional integrated exhaust brake. Its ball-bearing options and VGT vane control improve transient response and drivability in a compound.
