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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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120 Results

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

Granatelli 160 Degree Thermostat & Gasket: Dodge/Ram/Durango/Chrysler/Jeep 2003-2024 5.7-6.4L HEMI

Granatelli Motor Sports

Regular price $52.50 $49.88 5% off

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Mishimoto 13-14 Dodge Ram 6.7L Cummins Silicone Hose Kit Blue
Mishimoto 13-14 Dodge Ram 6.7L Cummins Silicone Hose Kit Blue

Mishimoto Silicone Radiator Hose Kit Blue (F&R): 13-14 RAM 2500/3500/4500/5500 6.7L Cummins

Mishimoto

Regular price $363.00 $329.95 9% off

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American Car Craft Water Tank / Power Steering Cover: Dodge Challenger R/T SRT8 2008 - 2010
American Car Craft Water Tank / Power Steering Cover: Dodge Challenger R/T SRT8 2008 - 2010
usa

American Car Craft Water Tank / Power Steering Cover: Dodge Challenger R/T SRT8 2008 - 2010

American Car Craft

Regular price $285.95 $266.95 7% off

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American Car Craft Polished Water Tank Cover w/ Cap: Dodge Challenger 2011 - 2023 (V8 Models)
American Car Craft Polished Water Tank Cover w/ Cap: Dodge Challenger 2011 - 2023 (V8 Models)
usa

American Car Craft Polished Water Tank Cover w/ Cap: Dodge Challenger 2011 - 2023 (V8 Models)

American Car Craft

Regular price from $266.95 Up to 7% off

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

Mishimoto Thermal Bypass Valve Kit: Ram 2500 / Ram 3500 2013-2018

Mishimoto

Regular price $225.00 $204.95 9% off

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

Mishimoto Thermal Bypass Valve Kit: Ram 2500 / Ram 3500 2013-2018

Mishimoto

Regular price $110.00 $99.95 9% off

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Mishimoto 07-20 Dodge RAM 5.9L/6.7L Cummins Stock Replacement Oil Cooler
Mishimoto 07-20 Dodge RAM 5.9L/6.7L Cummins Stock Replacement Oil Cooler

Mishimoto Stock Replacement Oil Cooler: Fits Dodge Ram 2500 / 3500 (07-24)

Mishimoto

Regular price $330.00 $299.95 9% off

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Mishimoto 10-12 Dodge Ram 6.7L Cummins Plastic Radiator
Mishimoto 10-12 Dodge Ram 6.7L Cummins Plastic Radiator

Mishimoto Plastic Radiator: Dodge Ram 2500 (2010) / Ram 3500 (2010-12)

Mishimoto

Regular price $353.00 $320.95 9% off

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Mishimoto 10-12 Ram 2500/3500 6.7L Cummins Transmission Cooler - Bypass

Mishimoto Transmission Cooler Bypass: Ram 2500 (2010-2013) / Ram 3500 (2010-2013)

Mishimoto

Regular price $76.00 $68.95 9% off

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Mishimoto 2019+ RAM 6.7L Cummins Thermal Bypass
Mishimoto 2019+ RAM 6.7L Cummins Thermal Bypass

Mishimoto Thermal Bypass: Ram 2500 / Ram 3500 2019-2024

Mishimoto

Regular price $225.00 $204.95 9% 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 13-18 Ram 6.7L Cummins Replacement Radiator
Mishimoto 13-18 Ram 6.7L Cummins Replacement Radiator

Mishimoto Replacement Radiator: Ram 2500 / Ram 3500 2013-2018

Mishimoto

Regular price $326.00 $295.95 9% off

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Mishimoto 2018+ Jeep Wrangler JL Performance Transmission Cooler
Mishimoto 2018+ Jeep Wrangler JL Performance Transmission Cooler

Mishimoto Perf Transmission Cooler: Jeep Wrangler JL 2018-2025 / Gladiator JT 2020-2025

Mishimoto

Regular price $394.00 $357.95 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 16-20 Jeep Grand Cherokee Thermal Bypass Valve Kit FF
Mishimoto 16-20 Jeep Grand Cherokee Thermal Bypass Valve Kit FF

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

Mishimoto

Regular price $110.00 $99.95 9% off

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per 

Mishimoto 2016-2020 Jeep Grand Cherokee Thermal Bypass Valve Kit
Mishimoto 2016-2020 Jeep Grand Cherokee Thermal Bypass Valve Kit

Mishimoto Thermal Bypass Valve Kit: Jeep Grand Cherokee (16-21) / Grand Cherokee L (2021)

Mishimoto

Regular price $225.00 $204.95 9% 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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