3.7L / 4.7L Cooling Upgrades
Killerglass Upper Radiator Hose Kit: Jeep Grand Cherokee 2005 - 2024 (V8 Only)
KillerGlass
Regular price from $169.00 15% off
- Unit price
- /per
Mishimoto Replacement Radiator: Dodge Ram 1500 Laramie / SLT / ST (2002-2003)
Mishimoto
Regular price
$191.00
$173.95
9% off
- Unit price
- /per
Mishimoto Replacement Radiator: Fits Most Dodge Ram 1500 Models (2002-2010)
Mishimoto
Regular price
$217.00
$196.95
9% off
- Unit price
- /per
Gates OE Exact Thermostat: Fits Most Dodge / Chrysler / Jeep / Ram Models (2003-2017)
Gates
$66.47
- Unit price
- /per
Granatelli Motor Sports 160 Deg Thermostat: Fits Chrysler / Dodge / Jeep / Ram (05-21)
Granatelli Motor Sports
Regular price
$52.50
$49.88
5% off
- Unit price
- /per
Mishimoto Replacement Power Steering Cooler: Fits Dodge Ram (02-12)
Mishimoto
Regular price
$99.00
$89.95
9% off
- Unit price
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Mishimoto 12-18 Jeep Wrangler JK Transmission Thermal Bypass Valve Kit
Mishimoto
Regular price
$164.00
$148.95
9% off
- Unit price
- /per
Mishimoto Mopar Pentastar / Hemi Thermal Bypass Valve Upgrade
Mishimoto
Regular price
$100.00
$90.95
9% off
- Unit price
- /per
Mishimoto Replacement Radiator: Jeep Grand Cherokee (05-10) / Commander (06-10)
Mishimoto
Regular price
$272.00
$246.95
9% off
- Unit price
- /per
Fleece Performance Coolant Bypass Kit: Dodge Ram 2500 / Ram 3500 1998-2002
Fleece Performance
$359.00
- Unit price
- /per
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
Regular price
$1,015.00
$922.95
9% off
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aFe BladeRunner Street Series Hi-Cap Radiator: Dodge Ram 2500 / 3500 5.9L V8 (94-02)
aFe
$734.00
- Unit price
- /per
HPS Silicone Radiator Hoses Kit: Jeep Grand Cherokee 3.7L V6 2005 - 2010
HPS
Regular price from $174.00 Up to 13% off
- Unit price
- /per
3 colors
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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.