Why This 6.7L Cummins Exhaust Manifold Is a Must-Have for Your 2019–2021 Ram
Posted by Will on Oct 17, 2025
Why This 6.7L Cummins Exhaust Manifold Is a Must-Have for Your 2019–2021 Ram
Upgrade your 2019–2021 Ram 6.7L Cummins with Diesel Power Source’s high-flow exhaust manifold. Designed to outlast and outperform the factory manifold, it improves throttle response, lowers EGTs, and delivers smoother turbo spool. Built in the USA from heavy-duty cast material for durability, it’s a direct bolt-on replacement—no tuning required.
Upgrade Your 6.7L Cummins Performance
Looking to fix a cracked stock manifold or upgrade your 6.7L Cummins for better performance? This USA-made performance manifold from Diesel Power Source is built to outperform the restrictive factory design.
It’s engineered for better flow, lower EGTs, and longer life—giving your Ram 2500 or 3500 the power and efficiency it deserves. Watch this short video to see how the DPS 6.7L Cummins exhaust manifold stacks up:
Built to Last and Perform
If you drive a 2019–2021 Ram with a 6.7L Cummins, you’ve likely heard about the common issue with cracked factory exhaust manifolds. The stock design simply can’t handle the heat and pressure long-term—especially if you tow or use your truck under heavy load.
Diesel Power Source designed this upgraded manifold to solve that problem and more. With over 75% better airflow than OEM, this manifold helps your turbo spool faster, reduces EGTs, and delivers stronger midrange power—all without tuning or modifications.
- Flows over 75% better than the factory manifold
- Lower EGTs and improved turbo response
- Thicker walls to resist cracking
- High-temp coated for durability
- Direct bolt-on fitment (no tuning needed)
- Fits all 2019–2024 Ram 2500/3500 6.7L Cummins trucks
Explore the Product
Ready to replace your cracked stock manifold and unlock more performance from your Cummins? Visit Diesel Power Source to see detailed specs, photos, and dyno results for the DPS 6.7L Cummins Exhaust Manifold and discover why it’s trusted by diesel pros across the country.
