# Mishimoto 2013+ Dodge Ram 6.7L Cummins Thermal Bypass Valve Kit

The transmission is the backbone of your 2013-2018 Dodge Ram 6.7L Cummins. It's responsible for transmitting up to 930 lb-ft of torque from the engine to the wheels. That much power generates a lot of heat, and if that heat isn't dissipated, it can destroy your transmission. The transmission cooler does a good job of keeping trans fluid temperatures in check, but only if the fluid can reach it. The stock cooling system of both the 68-RFE and Aisin AS69RC utilizes an in-line thermal bypass valve that controls fluid flow to the transmission cooler. The purpose of this valve is to prevent transmission fluid from flowing to the cooler until it reaches operating temperature. The thermostat inside this valve is prone to failure, however, and when that happens, the fluid never flows to the cooler, and the transmission can overheat. That's why Mishimoto has developed a full flow thermal bypass valve upgrade for your 2013-2018 Dodge Ram 6.7L Cummins. Our CNC-machined aluminum thermal bypass valve not only looks better than the stock unit, but it performs better too. This Mishimoto thermal bypass valve eliminates the internal thermostat, providing full fluid flow to the transmission cooler in all running conditions. This setup is ideal for owners in warm climates, those performing heavy towing, and trucks needing the best possible cooling efficiency for their transmission. The Mishimoto full-flow thermal bypass valve features strategically machined internal passages, providing improved flow over the stock valve for more effective cooling. In addition, cooling fins machined into the valve body add even more heat dissipation. This 2013-2018 Dodge Ram 6.7L Cummins Thermal Bypass Full Flow Valve Kit is built to last a lifetime with a durable silver anodized finish and our Mishimoto Lifetime Warranty.

-   Durable CNC-machined billet aluminum construction
-   Eliminates failure-prone bypass valve
-   Installs in less than 1 hour

This Part Fits:

Year

Make

Model

Submodel

2013-2018

Ram

2500

Big Horn

2013-2018

Ram

2500

Laramie

2014-2015

Ram

2500

Laramie Limited

2013-2018

Ram

2500

Laramie Longhorn

2016-2018

Ram

2500

Limited

2013-2015

Ram

2500

Lone Star

2013-2016

Ram

2500

Outdoorsman

2013-2018

Ram

2500

Power Wagon

2013-2018

Ram

2500

SLT

2013

Ram

2500

ST

2013-2018

Ram

2500

Tradesman

2013-2018

Ram

3500

Big Horn

2013-2018

Ram

3500

Laramie

2014-2015

Ram

3500

Laramie Limited

2013-2018

Ram

3500

Laramie Longhorn

2016-2018

Ram

3500

Limited

2013-2015,2017

Ram

3500

Lone Star

2013-2018

Ram

3500

SLT

2013

Ram

3500

ST

2013-2018

Ram

3500

Tradesman

## Details

- **Price:** 160.65 CAD
- **Vendor:** Mishimoto
- **Type:** Transmission Coolers

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 160.65 CAD | In stock |

## Images

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

---

> Source: [Standard Auto Part](https://www.standardautopart.com/products/mishimoto-2013-dodge-ram-6-7l-cummins-thermal-bypass-valve-kit-1)
> Updated: 2026-06-27