6.7 Cummins CCV Reroute

Why Does Your 6.7 Cummins Need an Intake Manifold Upgrade?

The Stock Intake Horn Chokes Airflow

The 6.7 Cummins stock intake horn uses a narrow, twisty internal passage that creates turbulence and pressure drop between the intercooler and the intake ports. Dyno and flow testing across the diesel community consistently shows the factory horn as one of the biggest airflow bottlenecks on the engine, especially above 2,000 RPM where a tuned 6.7 lives.

High EGTs and Slow Spool on Tuned Trucks

Once you add a tuner, bigger injectors, or a larger turbo, the stock plenum cannot feed the cylinder head fast enough. The result is high exhaust gas temperature under load, boost that arrives late, and wasted potential from your other upgrades. This is why a ram 6.7 intake horn is one of the first bolt-ons serious owners add.

Weak Stock Design Under Boost

The factory plastic-and-cast design flexes and leaks at elevated boost levels, and its cramped layout blocks access to the grid heater area. A cast aluminum 6.7 cummins air intake horn stays sealed at high boost and gives you clean ports for a boost gauge, nitrous, or water-methanol injection.

What Can an Intake Manifold Kit Solve?

Larger, Smoother Air Path

The high-flow manifold increases inlet cross-section and smooths every internal transition, so charged air reaches the intake ports with less turbulence and less pressure drop. More air in the cylinder means more complete combustion and stronger top-end power.

Lower EGTs Under Load

With a freer-flowing 6.7 cummins intake plenum, the engine breathes easier at high load, which drops peak exhaust gas temperature. For towing trucks, that margin matters: lower EGTs protect pistons and turbo, and let you hold power longer on grades.

Faster Turbo Spool and Throttle Response

Reduced intake restriction lets the turbo reach target boost sooner, so the truck feels more responsive off the line and when downshifting at highway speed. Owners commonly describe 6.7 cummins intake horn gains as quicker spool and a firmer feel in the seat, typically strongest on tuned trucks.

Built-In Provision for Upgrades

Machined ports accept a boost tap, pyrometer, or water-meth and nitrous nozzles, so the manifold grows with your build instead of getting replaced again later. Installation is a straightforward bolt-on job with basic hand tools.

Shop 6.7 Cummins Intake Manifold by Ram Engine & Fitment Guide

• Intake Manifold Kit for 6.7L Cummins Dodge Ram 2500 3500 (2013-2018), high-flow cast aluminum intake horn and plenum, includes gaskets and hardware, ports for boost/nitrous/water-meth.
• Intake Manifold Kit for 6.7L Cummins Dodge Ram 2500 3500 (2013-2018), second listing of the same 2013-2018 manifold kit; confirm with support if you are unsure which listing to order.

Why Choose EGR Performance?

The industry standard for high-performance diesel reliability.

Premium Quality & Rigorous Testing

Our EGR, DPF, and CCV delete kits are engineered from premium-grade materials and subjected to brutal quality control and field testing. Unlike generic alternatives, our products are built to withstand extreme heat and pressure, delivering unmatched durability and long-term stability when your rig needs it most.

20 Years of Proven Diesel Expertise

We aren't just selling parts, we live this industry. With two decades of hands-on experience providing specialized modification solutions for heavy-duty truck owners, our upgrades have been extensively proven across every driving environment, from daily towing to high-performance tracks.

Industry-Leading Standards

We work hand-in-hand with top-tier industry partners and reputable organizations. Every product we design, test, and ship meets or exceeds strict industry standards, ensuring your Powerstroke, Cummins, or Duramax gets the exact precision it deserves.

Real Results, Proven Track Record

Thousands of diesel owners trust us to unlock their engine's true potential. Our massive library of positive customer feedback and successful build case studies proves one thing: our kits deliver real horsepower, lower EGTs, and flawless reliability in the real world.

Frequently Asked Questions

Is an intake horn worth it on a 6.7 Cummins?

On a stock truck, gains are modest and the best 6.7 cummins intake horn is honestly a nice-to-have. Where a 6.7 cummins intake horn upgrade pays off is on tuned trucks and rigs with bigger turbos or injectors, where the stock horn becomes the airflow bottleneck.

Owners typically report faster spool, lower EGTs under load, and stronger top-end pull. It also adds ports for boost gauges and water-meth, so it is an upgrade that supports future mods.

What gains can I expect from a 6.7 Cummins intake manifold upgrade?

On a tuned 2013-2018 Ram you can expect quicker turbo spool, reduced pressure drop across the intake, and lower peak EGTs. Peak horsepower gains are usually modest on a stock-fueled truck, often in the single digits.

The real 6.7 cummins intake manifold upgrade value shows up under load and at high RPM, where the freer air path lets your existing tuning and turbo upgrades actually deliver.

Will this intake manifold fit my Ram?

This kit fits the 6.7L Cummins in 2013-2018 Dodge Ram 2500 and 3500 trucks. It is not designed for 2007.5-2012 trucks or 2019-and-newer Rams, which use different throttle body and grid heater layouts.

If you have a 2012 or older truck or a 2019+, contact our support team with your VIN and we will point you to the correct intake solution for your year.

Does this intake horn keep the grid heater?

Our 2013-2018 kit is designed to work with the factory grid heater arrangement on those trucks, unlike grid heater delete plates used on earlier engines. Cold-start function is preserved.

If you are planning a full grid heater delete on a different year truck, see our Grid Heater Deletes & Upgrades collection and confirm compatibility with us before ordering.

Can you put a 6.7 intake horn on a 5.9 Cummins?

People do ask about running a 6.7 intake horn on 5.9 engines. It is not a direct bolt-on: the 6.7 horn has different port geometry, and the 5.9 uses different throttle and grid heater alignment, so custom adaptation is required.

For a 5.9L Cummins we recommend an intake elbow or horn specifically made for the 1998.5-2007 5.9 instead of modifying a 6.7 unit.

How hard is it to install a 6.7 Cummins intake manifold kit?

It is a bolt-on job for a home mechanic with basic hand tools, typically 2 to 4 hours. You remove the intake tube, throttle body, and stock horn, swap gaskets, and torque the new manifold down in sequence.

Take your time aligning the gaskets and re-check every clamp after the first heat cycle to avoid boost leaks.

Do I need a tune after installing an intake manifold?

No tune is required; the manifold is a pure airflow upgrade and the truck will run fine on the stock calibration. That said, a tune is what unlocks most of the airflow benefit.

Many owners pair the intake horn with a cold air intake and exhaust for compounding gains. For a 2018 6.7 Cummins, our team can recommend intake and tuning combos that work well together.

Does an intake manifold delete or affect emissions equipment?

No. The intake manifold itself is not an emissions device, and this kit retains the factory grid heater and throttle body function. It is one of the few performance upgrades that stays emissions-friendly in most configurations.

Check your state and local regulations for any combined modifications on your truck.

What is the difference between an intake horn, intake manifold, and intake plenum?

On the 6.7 Cummins these terms describe the same general component: the casting that distributes air from the intercooler into the cylinder head. Intake horn usually refers to the inlet section, plenum to the distribution body.

Aftermarket kits like ours replace the horn and plenum as one assembly, which is why the terms are used interchangeably in product listings.

What is your return policy and warranty on intake manifolds?

EGR Performance offers 45-day worry-free returns and a one-year warranty on every intake manifold kit.

If the kit does not fit your truck or arrives with any defect, contact our support team for a replacement or refund. Free shipping applies to all orders.