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5.7L / 6.1L / 6.4L Hemi Cooling Upgrades

Cooling Upgrades for 5.7L, 6.1L, and 6.4L Hemi Engines The 5.7L, 6.1L SRT8, and 6.4L 392 Hemi engines are known for their strong performance and durability, each offering a unique balance of power and reliability. Whether you’re driving a classic 5.7L Hemi, a high-performance 6.1L SRT8, or a boost-ready 6.4L 392, managing engine temperatures is crucial to maintaining peak performance and longevity. This collection features cooling upgrades designed specifically for these Gen III Hemi platforms. From high-flow radiators and performance thermostats to upgraded water pumps and auxiliary cooling components, these parts help reduce heat soak and improve coolant flow under demanding conditions. Proper cooling supports your engine’s power potential while enhancing reliability during spirited driving or track use. Key cooling upgrades for your 5.7L, 6.1L, and 6.4L Hemi include: - High-capacity radiators for improved heat dissipation - Performance water pumps for consistent coolant flow - Upgraded thermostats for optimized temperature control - Auxiliary fans and cooling accessories Shop 5.7L / 6.1L / 6.4L Hemi cooling upgrades at FastHemis.
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HPS Silicone Heater Hose Kit: Jeep Commander 5.7L Hemi 2006 - 2010 (WITH Rear A/C)
HPS Silicone Heater Hose Kit: Jeep Commander 5.7L Hemi 2006 - 2010 (WITH Rear A/C)

HPS Silicone Heater Hose Kit: Jeep Commander 5.7L Hemi (05-10) w/ Rear A/C

HPS

Regular price from $191.00 Up to 13% off

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

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

Mishimoto

Regular price $164.00 $148.95 9% off

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Killerglass Upper Radiator Hose Kit: Dodge Ram 5.7L Hemi 2009 - 2010 / Ram 5.7L Hemi 2011 - 2018
usa

Killerglass Upper Radiator Hose Kit: Dodge Ram 5.7L Hemi 2009 - 2010 / Ram 5.7L Hemi 2011 - 2018

KillerGlass

Regular price from $199.99 9% off

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Mishimoto Aluminum Radiator: Dodge Challenger / Charger 6.2L SRT Hellcat 2015 - 2023
Mishimoto Aluminum Radiator: Dodge Challenger / Charger 6.2L SRT Hellcat 2015 - 2023

Mishimoto Aluminum Radiator: Dodge Challenger / Charger 6.2L SRT Hellcat 2015 - 2023

Mishimoto

Regular price $909.00 $825.95 9% off

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Killerglass Upper Radiator Hose Kit: Dodge Magnum 2005 - 2008 (All Models)
Killerglass Upper Radiator Hose Kit: Dodge Magnum 2005 - 2008 (All Models)
usa

Killerglass Upper Radiator Hose Kit: Dodge Magnum 2005 - 2008 (All Models)

KillerGlass
5.0 (1)

Regular price from $169.00 15% off

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Weapon R Aluminum Coolant Overflow Tank: Dodge Challenger 2011-2014

Weapon R Aluminum Coolant Overflow Tank: Dodge Challenger 2011 - 2014

Weapon R

Regular price $257.60 $218.96 15% off

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PPE Dual Fueler Coolant Hose: Dodge Ram (03-12)
PPE Dual Fueler Coolant Hose: Dodge Ram (03-12)
usa
Holley Replacement Water Neck Seal: Fits Most Dodge / Jeep / Ram Models (2003-2023)

Holley Replacement Water Neck Seal: Fits Most Dodge / Jeep / Ram Models (2003-2023)

Holley

Regular price $4.46 $2.18 51% off

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Cooling Upgrades for 5.7L, 6.1L SRT8, and 6.4L 392 Hemi Engines

The 5.7L, 6.1L SRT8, and 6.4L 392 Hemi engines each deliver impressive power and durability, but managing heat is essential to keep them running at their best. These Gen III Hemi platforms benefit greatly from targeted cooling upgrades that enhance coolant flow and reduce heat soak during spirited driving or track use.

Why Upgrade Cooling Components on Your 5.7L, 6.1L, or 6.4L Hemi?

High-performance driving and heavy loads generate significant heat that stock cooling systems can struggle to dissipate efficiently. Upgrading cooling parts helps maintain optimal engine temperatures, preventing power loss and premature wear. This is especially important for the 6.1L SRT8 and 6.4L 392, which feature higher compression and more aggressive tuning than the 5.7L.

  • Improved heat dissipation reduces risk of overheating under stress
  • Consistent coolant flow supports stable operating temperatures
  • Enhanced cooling reliability extends engine life and performance

Key Cooling Upgrades for Gen III Hemi Engines

Effective cooling upgrades focus on increasing capacity and efficiency while ensuring compatibility with your specific Hemi platform. High-capacity radiators provide better heat exchange, while performance water pumps maintain steady coolant circulation. Upgraded thermostats optimize temperature regulation, and auxiliary fans improve airflow during low-speed or stop-and-go conditions.

Choosing the Right Cooling Upgrades for Your Hemi at FastHemis

Selecting cooling components tailored to your 5.7L, 6.1L SRT8, or 6.4L 392 Hemi ensures proper fitment and maximum benefit. Whether you’re upgrading for daily driving durability or track-focused performance, our collection offers quality radiators, water pumps, thermostats, and cooling accessories designed for these engines. Shop FastHemis to keep your Hemi running cool and strong.

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