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2.0L I4 / 3.0L EcoDiesel / 3.8L V6 Cooling Upgrades

Cooling Upgrades for 2.0L I4, 3.0L EcoDiesel, and 3.8L V6 Engines The 2.0L inline-4, 3.0L EcoDiesel inline-6, and 3.8L V6 engines each have unique cooling demands driven by their design and performance characteristics. Whether you’re managing the efficient combustion of the 2.0L I4, the torque-focused EcoDiesel turbocharged diesel, or the versatile 3.8L V6, maintaining optimal operating temperatures is essential for durability and consistent performance. This collection offers a range of cooling upgrades tailored to these engines, including high-flow radiators, upgraded thermostats, performance water pumps, and enhanced cooling fans. These components help reduce heat soak, improve coolant circulation, and support your engine’s reliability under load or extended driving conditions. Key cooling upgrade benefits include: - Improved heat dissipation for diesel and gasoline engines - Enhanced coolant flow and temperature regulation - Increased reliability for towing and daily driving - Better performance under heavy load or high ambient temperatures Shop 2.0L I4, 3.0L EcoDiesel, and 3.8L V6 cooling upgrades at FastHemis.
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52 Results

Mishimoto Thermal Bypass Valve Kit (FRONT): Fits Chrysler/Dodge/Jeep/Ram 2006-2019 NAG1
Mishimoto Thermal Bypass Valve Kit (FRONT): Fits Chrysler/Dodge/Jeep/Ram 2006-2019 NAG1

Mishimoto Thermal Bypass Valve Kit: Fits Chrysler/Dodge/Jeep/Ram 2005-2020

Mishimoto

Regular price $164.00 $148.95 9% off

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Mishimoto Aluminum Radiator: Dodge Neon SRT-4 2003 - 2005
Mishimoto Aluminum Radiator: Dodge Neon SRT-4 2003 - 2005

Mishimoto Aluminum Radiator: Dodge Neon SRT-4 2003 - 2005

Mishimoto

Regular price $330.00 $299.95 9% off

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Mishimoto Thermal Bypass Valve Kit: Jeep Grand Cherokee (16-21) / Grand Cherokee L (21)
Mishimoto Thermal Bypass Valve Kit: Jeep Grand Cherokee (16-21) / Grand Cherokee L (21)

Mishimoto Thermal Bypass Valve Kit: Dodge Durango 18-24 6.4L/5.7L/3.6L

Mishimoto

Regular price $110.00 $99.95 9% off

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HPS Silicone Radiator Hose Kit: Dodge Neon SRT4 2003 - 2005
HPS Silicone Radiator Hose Kit: Dodge Neon SRT4 2003 - 2005

HPS Silicone Radiator Hose Kit: Dodge Neon SRT4 2003 - 2005

HPS

Regular price from $162.00 Up to 13% off

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3 colors
  • Black
  • Blue
  • Red
Mishimoto Plastic Replacement Radiator: Jeep Wrangler JK (2007-2018)
Mishimoto Plastic Replacement Radiator: Jeep Wrangler JK (2007-2018)

Mishimoto Plastic Replacement Radiator: Jeep Wrangler JK 2007-2018 3.6L

Mishimoto

Regular price $228.00 $206.95 9% off

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HPS Silicone Heater Hoses Kit: Jeep	Wrangler TJ 4.0L I6 2002 - 2006

HPS Silicone Heater Hoses Kit: Jeep Wrangler TJ 4.0L I6 2002 - 2006

HPS

Regular price from $124.00 Up to 13% off

Unit price
per 

3 colors
  • Red
  • Blue
  • Black
Mishimoto Thermal Bypass Valve Kit: Jeep Grand Cherokee (16-21) / Grand Cherokee L (2021)
Mishimoto Thermal Bypass Valve Kit: Jeep Grand Cherokee (16-21) / Grand Cherokee L (2021)

Mishimoto Thermal Bypass Valve Kit: Dodge Durango 18-24 6.4L/5.7L/3.6L

Mishimoto

Regular price $225.00 $204.95 9% off

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Mishimoto Silicone Radiator Hose Kit Olive Drab: Jeep Wrangler TJ 1997-2006 4.0L
Mishimoto Silicone Radiator Hose Kit Olive Drab: Jeep Wrangler TJ 1997-2006 4.0L

Mishimoto Silicone Radiator Hose Kit Olive Drab: Jeep Wrangler 97-06 4.0L/2.5L

Mishimoto

Regular price $159.00 $144.95 9% off

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HPS Silicone Heater Hoses Kit: Jeep Wrangler JK 3.8L V6 2007 - 2011

HPS Silicone Heater Hoses Kit: Jeep Wrangler JK 3.8L V6 2007 - 2011

HPS

Regular price $149.50 $130.00 13% off

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per 

3 colors
  • Red
  • Blue
  • Black
HPS Silicone Radiator Hoses Kit: Jeep Wrangler JK 3.8L V6 2007 - 2011

HPS Silicone Radiator Hoses Kit: Jeep Wrangler JK 3.8L V6 2007 - 2011

HPS

Regular price from $169.00 Up to 13% off

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per 

3 colors
  • Red
  • Blue
  • Black
HPS Silicone Heater Hoses Kit: Jeep	Wrangler 2.5L I4 1997 - 2002

HPS Silicone Heater Hoses Kit: Jeep Wrangler 2.5L I4 1997 - 2002

HPS

Regular price from $132.00 Up to 13% off

Unit price
per 

3 colors
  • Red
  • Blue
  • Black
HPS Silicone Radiator & Heater Hoses Kit: Jeep Wrangler JK 3.8L V6	2007 - 2011

HPS Silicone Radiator & Heater Hoses Kit: Jeep Wrangler JK 3.8L V6 2007 - 2011

HPS

Regular price $294.40 $256.00 13% off

Unit price
per 

3 colors
  • Red
  • Blue
  • Black
HPS Silicone Radiator Hoses Kit: Jeep Wrangler TJ 2.5L I4 1997 - 2002

HPS Silicone Radiator Hoses Kit: Jeep Wrangler TJ 2.5L I4 1997 - 2002

HPS

Regular price from $191.00 Up to 13% off

Unit price
per 

3 colors
  • Red
  • Blue
  • Black
Spec D Aluminum Radiator (3-Row): Dodge Ram 5.9L Diesel 1994 - 2002
Spec D Aluminum Radiator (3-Row): Dodge Ram 5.9L Diesel 1994 - 2002

Spec D Aluminum Radiator (3-Row): Dodge Ram 5.9L Diesel 1994 - 2002

Spec D

Regular price $374.00 $277.00 26% off

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CSF Cooling Module: Ram 1500 3.0L Turbo Diesel (2019-2024)
Mishimoto Silicone Radiator Hose Kit Blue (F&R): Jeep Wrangler JK 2012-2018 3.6L
Mishimoto Silicone Radiator Hose Kit Blue (F&R): Jeep Wrangler JK 2012-2018 3.6L

Mishimoto Silicone Radiator Hose Kit Blue: Jeep Wrangler 12-18 3.6L/2.0L

Mishimoto

Regular price $244.00 $221.95 9% off

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Mishimoto Silicone Radiator Hose Kit Black (F&R): Jeep Wrangler JK 2012-2018 3.6L
Mishimoto Silicone Radiator Hose Kit Black (F&R): Jeep Wrangler JK 2012-2018 3.6L

Mishimoto Silicone Radiator Hose Kit Black: Jeep Wrangler 12-18 3.6L/2.0L

Mishimoto

Regular price $244.00 $221.95 9% off

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per 

Spec D Aluminum Radiator (3-Row): Jeep Wrangler TJ 1997 - 2006
Spec D Aluminum Radiator (3-Row): Jeep Wrangler TJ 1997 - 2006

Spec D Aluminum Radiator (3-Row): Jeep Wrangler TJ 1997 - 2006

Spec D

Regular price $238.00 $176.00 26% off

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Mishimoto Silicone Radiator Hose Kit Matte Black (F&R): Jeep Wrangler JK 2012-2018 3.6L
Mishimoto Silicone Radiator Hose Kit Matte Black (F&R): Jeep Wrangler JK 2012-2018 3.6L

Mishimoto Silicone Radiator Hose Kit Matte Black: Jeep Wrangler 12-18 3.6L/2.0L

Mishimoto

Regular price $263.00 $238.95 9% off

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Mishimoto Silicone Radiator Hose Kit Black (F&R): Jeep Wrangler TJ 1997-2006 4.0L
Mishimoto Silicone Radiator Hose Kit Black (F&R): Jeep Wrangler TJ 1997-2006 4.0L

Mishimoto Silicone Radiator Hose Kit Black: Jeep Wrangler 97-06 4.0L/2.5L

Mishimoto

Regular price $151.00 $136.95 9% off

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per 

Mishimoto Silicone Radiator Hose Kit Red (F&R): Jeep Wrangler TJ 1997-2006 4.0L
Mishimoto Silicone Radiator Hose Kit Red (F&R): Jeep Wrangler TJ 1997-2006 4.0L

Mishimoto Silicone Radiator Hose Kit Red: Jeep Wrangler 97-06 4.0L/2.5L

Mishimoto

Regular price $151.00 $136.95 9% off

Unit price
per 

Mishimoto Silicone Radiator Hose Kit Red: Jeep Wrangler JK 2012-2018 3.6L
Mishimoto Silicone Radiator Hose Kit Red: Jeep Wrangler JK 2012-2018 3.6L

Mishimoto Silicone Radiator Hose Kit Red: Jeep Wrangler 12-18 3.6L/2.0L

Mishimoto

Regular price $244.00 $221.95 9% off

Unit price
per 

Mishimoto Non-Thermostatic Engine Oil Cooler Kit Black (FRONT): Jeep Wrangler JK 2007-2011 3.8L
Mishimoto Non-Thermostatic Engine Oil Cooler Kit Black (FRONT): Jeep Wrangler JK 2007-2011 3.8L

Mishimoto Non-Thermostatic Engine Oil Cooler Kit Black: Jeep Wrangler 07-11 3.8L V6

Mishimoto

Regular price $535.00 $485.95 9% off

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Mishimoto Thermostatic Engine Oil Cooler Kit Black (F&R): Jeep Wrangler JK 2007-2011 3.8L
Mishimoto Thermostatic Engine Oil Cooler Kit Black (F&R): Jeep Wrangler JK 2007-2011 3.8L

Mishimoto Thermostatic Engine Oil Cooler Kit Black: Jeep Wrangler 07-11 3.8L V6

Mishimoto

Regular price $597.00 $542.95 9% off

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Mishimoto Thermostatic Engine Oil Cooler Kit Silver (F&R): Jeep Wrangler JK 2007-2011 3.8L
Mishimoto Thermostatic Engine Oil Cooler Kit Silver (F&R): Jeep Wrangler JK 2007-2011 3.8L

Mishimoto Thermostatic Engine Oil Cooler Kit Silver: Jeep Wrangler 07-11 3.8L V6

Mishimoto

Regular price $597.00 $542.95 9% off

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CSF High-Performance Transmission Oil Cooler: Fits Most Jeep Wrangler / Gladiator Models (2018-2026)
CSF High-Performance Transmission Oil Cooler: Fits Most Jeep Wrangler / Gladiator Models (2018-2026)
Mishimoto Non-Thermostatic Engine Oil Cooler Kit Silver (FRONT): Jeep Wrangler JK 2007-2011 3.8L
Mishimoto Non-Thermostatic Engine Oil Cooler Kit Silver (FRONT): Jeep Wrangler JK 2007-2011 3.8L

Mishimoto Non-Thermostatic Engine Oil Cooler Kit Silver: Jeep Wrangler 07-11 3.8L V6

Mishimoto

Regular price $535.00 $485.95 9% off

Unit price
per 

Mishimoto Transmission Cooler Kit 19-Row Bar-Plate Silver (FRONT): Jeep Wrangler JK 2007-2011 3.8L
Mishimoto Transmission Cooler Kit 19-Row Bar-Plate Silver (FRONT): Jeep Wrangler JK 2007-2011 3.8L

Mishimoto Transmission Cooler Kit 19-Row Bar-Plate Silver: Jeep Wrangler 07-11 3.8L V6

Mishimoto

Regular price $379.00 $344.95 9% off

Unit price
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Mishimoto Performance Aluminum Radiator V2: Jeep Wrangler JK 2007-2018
Mishimoto Performance Aluminum Radiator V2: Jeep Wrangler JK 2007-2018

Mishimoto Performance Aluminum Radiator V2: Jeep Wrangler 07-18 3.8L/3.6L/2.0L

Mishimoto

Regular price $766.00 $695.95 9% off

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per 

Mishimoto Transmission Cooler Kit 19-Row Bar-Plate Black (FRONT): Jeep Wrangler JK 2007-2011 3.8L
Mishimoto Transmission Cooler Kit 19-Row Bar-Plate Black (FRONT): Jeep Wrangler JK 2007-2011 3.8L

Mishimoto Transmission Cooler Kit 19-Row Bar-Plate Black: Jeep Wrangler 07-11 3.8L V6

Mishimoto

Regular price $379.00 $344.95 9% off

Unit price
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Holley Aluminum Swivel Water Neck 45 Degree: Fits Most Dodge / Jeep Models (1966-2006) - Black
Holley Aluminum Swivel Water Neck 45 Degree: Fits Most Dodge / Jeep Models (1966-2006) - Black

Holley Aluminum Swivel Water Neck 45 Degree: Fits Most Dodge / Jeep Models (1966-2006) - Black

Holley

Regular price $102.95 $94.69 8% off

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Holley Aluminum Swivel Water Neck 90 Degree: Fits Most Dodge / Jeep Models (1966-2006) - Black
Holley Aluminum Swivel Water Neck 90 Degree: Fits Most Dodge / Jeep Models (1966-2006) - Black
CSF Hi-Perf Aluminum Radiator: Jeep Wrangler JK 2007-2018 3.8/3.6L
CSF Hi-Perf Aluminum Radiator: Jeep Wrangler JK 2007-2018 3.8/3.6L

CSF Hi-Perf Aluminum Radiator: Jeep Wrangler 07-18 3.8L/3.6L

CSF

Regular price $629.00 $575.00 9% off

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Mishimoto Silicone Radiator Hose Kit Black (F&R): Jeep Wrangler TJ 1997-2002 2.5L
Mishimoto Silicone Radiator Hose Kit Black (F&R): Jeep Wrangler TJ 1997-2002 2.5L

Mishimoto Silicone Radiator Hose Kit Black: Jeep Wrangler 97-02 4.0L/2.5L

Mishimoto

Regular price $147.00 $133.95 9% off

Unit price
per 

Mishimoto Silicone Radiator Hose Kit Black (F&R): Jeep Wrangler JK 2007-2011 3.8L
Mishimoto Silicone Radiator Hose Kit Black (F&R): Jeep Wrangler JK 2007-2011 3.8L

Mishimoto Silicone Radiator Hose Kit Black: Jeep Wrangler 07-11 3.8L V6

Mishimoto

Regular price $167.00 $151.95 9% off

Unit price
per 

Mishimoto Silicone Radiator Hose Kit Red (F&R): Jeep Wrangler JK 2007-2011 3.8L
Mishimoto Silicone Radiator Hose Kit Red (F&R): Jeep Wrangler JK 2007-2011 3.8L

Mishimoto Silicone Radiator Hose Kit Red: Jeep Wrangler 07-11 3.8L V6

Mishimoto

Regular price $167.00 $151.95 9% off

Unit price
per 

Cooling Upgrades for 2.0L I4, 3.0L EcoDiesel, and 3.8L V6 Engines

The 2.0L inline-4, 3.0L EcoDiesel inline-6, and 3.8L V6 engines each have distinct cooling requirements shaped by their design and operating conditions. Whether managing the efficient combustion of the gasoline 2.0L I4, the torque-heavy turbocharged EcoDiesel, or the versatile 3.8L V6, maintaining optimal engine temperatures is critical for durability and consistent performance.

Why are cooling upgrades important for these engine platforms?

Each engine platform faces unique thermal challenges. The 2.0L I4 relies on efficient heat dissipation to support fuel economy and emissions, while the 3.0L EcoDiesel’s turbocharged design generates significant heat under load. The 3.8L V6 balances power and smooth operation but still benefits from enhanced cooling to prevent heat soak and maintain performance.

  • Improved heat management reduces risk of overheating and engine wear
  • Enhanced coolant flow supports consistent operating temperatures under varied driving conditions
  • Upgraded components extend engine life and reliability, especially during towing or heavy use

What types of cooling upgrades are best suited for these engines?

Cooling upgrades for these engines focus on increasing coolant flow and heat dissipation. High-flow radiators provide greater surface area and improved airflow, while performance water pumps ensure efficient coolant circulation. Upgraded thermostats and enhanced cooling fans help maintain stable temperatures, especially in demanding environments.

How to select the right cooling upgrades for your 2.0L I4, 3.0L EcoDiesel, or 3.8L V6

Choosing the right cooling components depends on your engine’s specific needs and driving conditions. Consider your typical load, ambient temperatures, and whether you tow or drive aggressively. FastHemis offers a curated selection of cooling upgrades designed to fit each engine platform precisely, helping you maintain optimal performance and reliability.

SELECT YOUR VEHICLE