Dodge 6.7L Cummins Intercooler 2013+

Waiting is never an enjoyable pastime, and I feel confident saying this as a rather impatient individual, especially when it comes to ordering parts. After the initial wincing as I type my credit card information in and press confirm, I try to be patient only to end up refreshing my tracking number periodically throughout the day. Even at this moment I have a UPS tab open anxiously awaiting a shiny new oil pump for my track car. Well, the wait is over (for 4^th-gen owners at least); testing is complete!

Before we could begin testing, Team Mishi had to tackle the install. With a large core featuring a bar-and-plate design, this intercooler is a hefty unit. You will certainly want to enlist the help of a buddy when it comes time for installation. Our engineer, Jason, called in a reinforcement in the form of our video host, Rob.

Installing Mishimoto's Cummins Intercooler

Mishimoto's Cummins intercooler installed

Mishimoto's Cummins intercooler installed

With the install in the books and the

We are back with a much-needed update on our 13+ Dodge Cummins intercooler. For most of our projects, we work with a donor vehicle to conduct fitment and performance testing. Unfortunately, this also means being patient when donor vehicles are not available for us to use. The good news is that we will not have to be patient for much longer, because testing is on our schedule! Once we complete testing in the coming weeks, we will be sure to share the results with you. In the meantime we can take a quick look at our finalized prototypes for testing!

Prototype Cummins intercooler and shroud

In our last post about the Cummins intercooler, we created a foam prototype with 3D-printed end tanks and cut a shroud on our waterjet. With our initial prototypes complete and fitment confirmed, we can move on to creating our final prototype for testing. That means handing the design over to our resident drafter and render wizard, Josh. He created some awesome renderings of what the final intercooler

With our first prototype intercooler and shroud assembly complete, it was time to test fit and make necessary changes or adjustments.

Prototype Cummins Intercooler Test Fit

Using the factory mounting brackets, we bolted our components into place.

Mishimoto 6.7 Cummins intercooler prototype installed

The front shroud fits nice and snug against the front bumper and grille. The core is definitely in an ideal position for optimal airflow.

Mishimoto 6.7 Cummins intercooler prototype installed

Our team then worked to install the rear intercooler shroud, which mates with the cooling fan plastic shroud.

Mishimoto 6.7 Cummins intercooler prototype installed

It was here that we ran into a slight fitment issue. The altered core size we designed pushes the shroud farther back toward the engine. Unfortunately, this means our shroud contacted the steering gearbox.

Mishimoto Dodge Ram intercooler prototype installed

A bit of work with the cutoff wheel, and we had space to install the prototype.

Mishimoto

After evaluating the factory intercooler, our team was prepared to begin designing an intercooler with even more efficiency. The process started as a simple 3D model that included our primary mounting points. This model was then sent to the 3D printer for some rapid prototyping.

3D printing Cummins intercooler end tank

Once our tanks were complete, we mated the different pieces using adhesive.

3D printing 6.7 Cummins intercooler end tank

Shroud Fabrication

As you can see the 3D-printed tanks have numerous raised mounting points in place to hold our shroud design. On the factory setup, the base of the engine-cooling fan shroud is mounted to the intercooler, so we will need to replicate a similar setup with our design. In addition to the rear shroud, a front duct system will be incorporated to help guide airflow through the intercooler core. This ducting should provide an improvement in cooling efficiency.

The shroud was first designed in Solidworks. We then use a feature called "Flat Pack,"

Our product line for the Dodge Cummins continues to grow each year with the addition of interesting components that help you take your truck to the next level. These include efficient aluminum radiators, durable silicone hose kits, as well as top-notch intercoolers and intercooler piping kits. Our intercooler coverage ranges from 1994 through 2012, but in 2013, Dodge changed the Cummins intercooler design substantially. So once again, we are ready to take a shot at improving the factory system.

Factory Cummins Intercooler

Test vehicle for 6.7L Cummins intercooler development

Like previous generations, the 2013+ models feature an air-to-air intercooler. The primary change in 2013 was the mounting location of this cooler. Previous years saw the intercooler incorporated into the front stack with the radiator, AC condenser, and other coolers.

2nd Generation Cummins intercooler

In 2013+ models, the cooler is mounted below these other heat exchangers and utilizes its own ducting for airflow.