Mishimoto 6.7L Cummins Transmission Cooler — Fits 2015-2018 Dodge RAM 2500/3500

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SKU: MISMMTC-RAM-15SL
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Sale price$559.95 Regular price$616.00
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Superior Transmission Cooling for Your 6.7L Cummins RAM

Heat is the silent killer of transmissions, especially in powerful trucks like the 2015-2018 Dodge RAM 2500 and 3500 equipped with the 6.7L Cummins engine. Whether you're hauling heavy loads, navigating tough terrain, or simply looking for enhanced reliability, a robust cooling system is non-negotiable. Mishimoto delivers a high-performance, direct-fit transmission cooler designed to keep your transmission running at optimal temperatures.

Unmatched Cooling Capacity

This advanced transmission cooler from Mishimoto features a significantly larger tube-and-fin core, incorporating internal fins to maximize surface area and improve heat exchange. Experience a dramatic improvement over your stock cooler with these key enhancements:

  • A massive 112% increase in core volume for superior heat absorption.
  • A staggering 237% increase in fin area for enhanced cooling efficiency.
  • A 226% increase in fluid capacity, allowing for greater heat management.

Engineered for Performance and Durability

Mishimoto's commitment to quality ensures this transmission cooler is a direct fit for your 2015-2018 RAM 6.7L Cummins, making installation seamless. The design prioritizes both maximum cooling and efficient fluid flow, reducing the strain on your transmission and extending its lifespan. Don't let heat compromise your truck's performance. Invest in the ultimate cooling solution for your Cummins and drive with confidence, knowing your transmission is protected by Mishimoto's engineering excellence.

Get the ultimate cooling upgrade for your RAM with Mishimoto.

Vehicle Fitment

Years Make Model Trim
2015 Ram 2500 Laramie Limited
2015 Ram 2500 Lone Star
2015-2016 Ram 2500 Outdoorsman
2015-2018 Ram 2500 Big Horn
2015-2018 Ram 2500 Laramie
2015-2018 Ram 2500 Laramie Longhorn
2015-2018 Ram 2500 Power Wagon
2015-2018 Ram 2500 Tradesman
2016-2018 Ram 2500 Limited
2015 Ram 3500 Laramie Limited
2015 Ram 3500 Lone Star
2015-2018 Ram 3500 Big Horn
2015-2018 Ram 3500 Laramie
2015-2018 Ram 3500 Laramie Longhorn
2015-2018 Ram 3500 SLT
2016-2018 Ram 3500 Limited
2017 Ram 3500 Lone Star

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Superior Transmission Cooling for Your 6.7L Cummins RAM

Heat is the silent killer of transmissions, especially in powerful trucks like the 2015-2018 Dodge RAM 2500 and 3500 equipped with the 6.7L Cummins engine. Whether you're hauling heavy loads, navigating tough terrain, or simply looking for enhanced reliability, a robust cooling system is non-negotiable. Mishimoto delivers a high-performance, direct-fit transmission cooler designed to keep your transmission running at optimal temperatures.

Unmatched Cooling Capacity

This advanced transmission cooler from Mishimoto features a significantly larger tube-and-fin core, incorporating internal fins to maximize surface area and improve heat exchange. Experience a dramatic improvement over your stock cooler with these key enhancements:

  • A massive 112% increase in core volume for superior heat absorption.
  • A staggering 237% increase in fin area for enhanced cooling efficiency.
  • A 226% increase in fluid capacity, allowing for greater heat management.

Engineered for Performance and Durability

Mishimoto's commitment to quality ensures this transmission cooler is a direct fit for your 2015-2018 RAM 6.7L Cummins, making installation seamless. The design prioritizes both maximum cooling and efficient fluid flow, reducing the strain on your transmission and extending its lifespan. Don't let heat compromise your truck's performance. Invest in the ultimate cooling solution for your Cummins and drive with confidence, knowing your transmission is protected by Mishimoto's engineering excellence.

Get the ultimate cooling upgrade for your RAM with Mishimoto.

Vehicle Fitment

Years Make Model Trim
2015 Ram 2500 Laramie Limited
2015 Ram 2500 Lone Star
2015-2016 Ram 2500 Outdoorsman
2015-2018 Ram 2500 Big Horn
2015-2018 Ram 2500 Laramie
2015-2018 Ram 2500 Laramie Longhorn
2015-2018 Ram 2500 Power Wagon
2015-2018 Ram 2500 Tradesman
2016-2018 Ram 2500 Limited
2015 Ram 3500 Laramie Limited
2015 Ram 3500 Lone Star
2015-2018 Ram 3500 Big Horn
2015-2018 Ram 3500 Laramie
2015-2018 Ram 3500 Laramie Longhorn
2015-2018 Ram 3500 SLT
2016-2018 Ram 3500 Limited
2017 Ram 3500 Lone Star

Product Details

Product Description

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Superior Transmission Cooling for Your 6.7L Cummins RAM

Heat is the silent killer of transmissions, especially in powerful trucks like the 2015-2018 Dodge RAM 2500 and 3500 equipped with the 6.7L Cummins engine. Whether you're hauling heavy loads, navigating tough terrain, or simply looking for enhanced reliability, a robust cooling system is non-negotiable. Mishimoto delivers a high-performance, direct-fit transmission cooler designed to keep your transmission running at optimal temperatures.

Unmatched Cooling Capacity

This advanced transmission cooler from Mishimoto features a significantly larger tube-and-fin core, incorporating internal fins to maximize surface area and improve heat exchange. Experience a dramatic improvement over your stock cooler with these key enhancements:

  • A massive 112% increase in core volume for superior heat absorption.
  • A staggering 237% increase in fin area for enhanced cooling efficiency.
  • A 226% increase in fluid capacity, allowing for greater heat management.

Engineered for Performance and Durability

Mishimoto's commitment to quality ensures this transmission cooler is a direct fit for your 2015-2018 RAM 6.7L Cummins, making installation seamless. The design prioritizes both maximum cooling and efficient fluid flow, reducing the strain on your transmission and extending its lifespan. Don't let heat compromise your truck's performance. Invest in the ultimate cooling solution for your Cummins and drive with confidence, knowing your transmission is protected by Mishimoto's engineering excellence.

Get the ultimate cooling upgrade for your RAM with Mishimoto.

Vehicle Fitment

Years Make Model Trim
2015 Ram 2500 Laramie Limited
2015 Ram 2500 Lone Star
2015-2016 Ram 2500 Outdoorsman
2015-2018 Ram 2500 Big Horn
2015-2018 Ram 2500 Laramie
2015-2018 Ram 2500 Laramie Longhorn
2015-2018 Ram 2500 Power Wagon
2015-2018 Ram 2500 Tradesman
2016-2018 Ram 2500 Limited
2015 Ram 3500 Laramie Limited
2015 Ram 3500 Lone Star
2015-2018 Ram 3500 Big Horn
2015-2018 Ram 3500 Laramie
2015-2018 Ram 3500 Laramie Longhorn
2015-2018 Ram 3500 SLT
2016-2018 Ram 3500 Limited
2017 Ram 3500 Lone Star

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