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3.7L / 4.7L Cooling Upgrades

Cooling Upgrades for 3.7L and 4.7L Engines The 3.7L V6 and 4.7L V8 engines are popular powerplants known for their balance of capability and durability in various Dodge, Jeep, and Ram models. These engines benefit greatly from enhanced cooling solutions that help maintain optimal operating temperatures, especially under heavy load or performance driving conditions. In this collection, you’ll find a range of cooling upgrades designed specifically for the 3.7L and 4.7L platforms. From high-flow radiators and performance water pumps to thermostats and cooling fans, these parts improve heat dissipation and reduce the risk of overheating. Proper cooling upgrades help preserve engine longevity while supporting increased power output and towing capability. Key cooling upgrades include: - High-capacity radiators for improved coolant flow - Performance water pumps for consistent circulation - Upgraded thermostats for precise temperature control - Electric and mechanical cooling fans for enhanced airflow Shop 3.7L / 4.7L cooling upgrades at FastHemis.
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15 Results

Killerglass Upper Radiator Hose Kit: Jeep Grand Cherokee 2005 - 2024 (V8 Only)
usa

Killerglass Upper Radiator Hose Kit: Jeep Grand Cherokee 2005 - 2024 (V8 Only)

KillerGlass
5.0 (1)

Regular price from $169.00 15% off

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per 

Mishimoto Dodge Ram 1500 Replacement Radiator 2002-2003
Mishimoto Dodge Ram 1500 Replacement Radiator 2002-2003

Mishimoto Replacement Radiator: Dodge Ram 1500 Laramie / SLT / ST (2002-2003)

Mishimoto

Regular price $191.00 $173.95 9% off

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Mishimoto Dodge Ram 1500 Replacement Radiator 2002-2008
Mishimoto Dodge Ram 1500 Replacement Radiator 2002-2008

Mishimoto Replacement Radiator: Fits Most Dodge Ram 1500 Models (2002-2010)

Mishimoto

Regular price $217.00 $196.95 9% off

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per 

Granatelli Motor Sports 160 Deg Thermostat: Fits Most Hemi Models
Granatelli Motor Sports 160 Deg Thermostat: Fits Most Hemi Models
usa

Granatelli Motor Sports 160 Deg Thermostat: Fits Chrysler / Dodge / Jeep / Ram (05-21)

Granatelli Motor Sports

Regular price $52.50 $49.88 5% off

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Mishimoto 02-08 Dodge Ram 1500 Replacement Power Steering Cooler
Mishimoto 02-08 Dodge Ram 1500 Replacement Power Steering Cooler

Mishimoto Replacement Power Steering Cooler: Fits Dodge Ram (02-12)

Mishimoto

Regular price $99.00 $89.95 9% off

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Mishimoto 12-18 Jeep Wrangler JK Transmission Thermal Bypass Valve Kit
Mishimoto 12-18 Jeep Wrangler JK Transmission Thermal Bypass Valve Kit

Mishimoto 12-18 Jeep Wrangler JK Transmission Thermal Bypass Valve Kit

Mishimoto

Regular price $164.00 $148.95 9% off

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Mishimoto Mopar Pentastar / Hemi Thermal Bypass Valve Upgrade
Mishimoto Mopar Pentastar / Hemi Thermal Bypass Valve Upgrade

Mishimoto Mopar Pentastar / Hemi Thermal Bypass Valve Upgrade

Mishimoto

Regular price $100.00 $90.95 9% off

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Mishimoto Jeep Commander Replacement Radiator 2006-2010
Mishimoto Jeep Commander Replacement Radiator 2006-2010

Mishimoto Replacement Radiator: Jeep Grand Cherokee (05-10) / Commander (06-10)

Mishimoto

Regular price $272.00 $246.95 9% off

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Fleece Performance Coolant Bypass Kit: Dodge Ram 2500 / Ram 3500 1998-2002
usa
Mishimoto Transmission Cooler: Dodge Ram 2500 / Ram 3500 1994 - 2002

Mishimoto Transmission Cooler: Dodge Ram 2500 / Ram 3500 1994 - 2002

Mishimoto

Regular price $394.00 $357.95 9% off

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Mishimoto Aluminum Radiator: Dodge Ram 2500 / Ram 3500 1994 - 2002

Mishimoto Aluminum Radiator: Dodge Ram 2500 / Ram 3500 1994 - 2002

Mishimoto

Regular price $1,015.00 $922.95 9% off

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HPS Silicone Radiator Hoses Kit: Jeep Grand Cherokee	3.7L V6 2005 - 2010
HPS Silicone Radiator Hoses Kit: Jeep Grand Cherokee	3.7L V6 2005 - 2010

HPS Silicone Radiator Hoses Kit: Jeep Grand Cherokee 3.7L V6 2005 - 2010

HPS

Regular price from $174.00 Up to 13% off

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Cooling Upgrades for 3.7L V6 and 4.7L V8 Engines

The 3.7L V6 and 4.7L V8 engines are reliable powerplants commonly found in Dodge, Jeep, and Ram vehicles, known for their balance of capability and durability. Upgrading the cooling system on these engines is essential to maintain optimal operating temperatures, especially during heavy towing, off-road use, or performance driving.

Why upgrade cooling components on your 3.7L or 4.7L engine?

Both the 3.7L and 4.7L engines benefit from enhanced cooling to prevent overheating and reduce thermal stress on engine components. Stock cooling systems can struggle under increased load or in hot climates, leading to reduced performance and potential engine damage. Upgrading cooling parts helps maintain consistent temperatures and extends engine life.

  • Improved heat dissipation reduces risk of overheating
  • Supports higher power output and towing demands
  • Enhances reliability during extended heavy use
  • Helps maintain stable operating temperatures in harsh conditions

Key cooling upgrades for the 3.7L and 4.7L platforms

Effective cooling upgrades include high-capacity radiators that increase coolant flow and performance water pumps that ensure consistent circulation. Upgraded thermostats provide more precise temperature regulation, while electric or mechanical cooling fans improve airflow through the radiator, especially at low speeds or idle.

Choosing the right cooling parts for your 3.7L / 4.7L engine

Selecting cooling upgrades tailored to your engine platform ensures proper fitment and optimal performance. Whether you’re upgrading for towing, off-road, or daily driving, FastHemis offers a range of radiators, water pumps, thermostats, and fans designed specifically for the 3.7L and 4.7L engines. Shop our collection to keep your engine running cool and reliable.

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