# Mishimoto 15-18 Dodge RAM 6.7L Cummins Transmission Cooler

There's no greater enemy for a transmission than heat. Whether your 2015-2018 RAM 6.7L Cummins is a dedicated tow vehicle, hardworking fleet truck, or a daily driver with a liking for the dragstrip, you need to ensure that your transmission runs cool. Luckily, Mishimoto has developed a direct-fit transmission cooler to do just that. Our 2015-2018 RAM 6.7L Cummins transmission cooler utilizes a tube-and-fin core with internal fins to balance flow with efficient cooling. With a massive 112-percent greater core volume, 237-percent increase in fin area, and 226-percent increase in fluid capacity, this trans cooler is a huge improvement over the stock unit. To make even better use of that extra core volume, the Mishimoto transmission cooler utilizes fins within the tubes to not only add more cooling surface area, but also ensure more of the fluid contacts the tube, leading to better cooling efficiency. All these improvements make the Mishimoto transmission cooler the ideal replacement for your stock transmission cooler.Installation of the Mishimoto 2015-2018 RAM 6.7L Cummins transmission cooler requires no cutting or other modifications and includes all hardware needed for a fast and easy install. Like all Mishimoto products, this transmission cooler is backed up by our Lifetime Warranty with Accident Protection for worry free cooling as long as you own it.

-   237-percent increase in external fin area over stock cooler
-   226-percent increase in fluid capacity over stock cooler
-   112-percent increase in core volume over stock cooler

This Part Fits:

Year

Make

Model

Submodel

2015-2018

Ram

2500

Big Horn

2015-2018

Ram

2500

Laramie

2015

Ram

2500

Laramie Limited

2015-2018

Ram

2500

Laramie Longhorn

2016-2018

Ram

2500

Limited

2015

Ram

2500

Lone Star

2015-2016

Ram

2500

Outdoorsman

2015-2018

Ram

2500

Power Wagon

2015-2018

Ram

2500

SLT

2015-2018

Ram

2500

Tradesman

2015-2018

Ram

3500

Big Horn

2015-2018

Ram

3500

Laramie

2015

Ram

3500

Laramie Limited

2015-2018

Ram

3500

Laramie Longhorn

2016-2018

Ram

3500

Limited

2015,2017

Ram

3500

Lone Star

2015-2018

Ram

3500

SLT

2015-2018

Ram

3500

Tradesman

## Details

- **Price:** 794.74 CAD
- **Vendor:** Mishimoto
- **Type:** Transmission Coolers

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 794.74 CAD | In stock |

## Images

- Photo - Primary
- User 1
- User 4
- User 2
- User 3
- User 1
- Logo Image

---

> Source: [Standard Auto Part](https://www.standardautopart.com/products/mishimoto-15-18-dodge-ram-6-7l-cummins-transmission-cooler)
> Updated: 2026-06-27