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3.7L / 4.0L Engine Upgrades

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228 Results

MagnaFlow BRE Exhaust Kit: Jeep Commander / Grand Cherokee 2005-2010
MagnaFlow BRE Exhaust Kit: Jeep Commander / Grand Cherokee 2005-2010
Joe Approved
usa
K&N Engineering 57 Series Cold Air Intake: Jeep Commander 3.7L / Grand Cherokee 3.7L (05-10)
K&N Engineering 57 Series Cold Air Intake: Jeep Commander 3.7L / Grand Cherokee 3.7L (05-10)
Joe Approved
American Brother Designs Washer Fluid Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025
American Brother Designs Washer Fluid Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025
usa

American Brother Designs Washer Fluid Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025

American Brother Designs

Regular price $109.00 $59.00 Sale

Unit price
per 

American Brother Designs Radiator Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025
American Brother Designs Radiator Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025
usa

American Brother Designs Radiator Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025

American Brother Designs
5.0 (1)

Regular price $109.00 $59.00 Sale

Unit price
per 

American Brother Designs Coolant Reservoir Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025
American Brother Designs Coolant Reservoir Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025
usa

American Brother Designs Coolant Reservoir Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025

American Brother Designs
5.0 (1)

Regular price $109.00 $59.00 Sale

Unit price
per 

Pedal Commander Bluetooth Throttle Response Controller: 300 / Challenger / Charger / Magnum 2007 - 2024 (All Models)
Pedal Commander Bluetooth Throttle Response Controller: 300 / Challenger / Charger / Magnum 2007 - 2024 (All Models)
K&N Air Filter: Dodge Ram 2002 - 2010 (All Models) / Ram 2011 - 2018 (All Models)
K&N Air Filter: Dodge Ram 2002 - 2010 (All Models) / Ram 2011 - 2018 (All Models)

K&N Air Filter: Fits Most Dodge/Ram (02-26)

K&N Engineering

$68.99

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per 

Bully Dog GT Platinum Tuner: Fits Dodge/Jeep/Ram 2003-2014 5.7/6.1L HEMI
Bully Dog GT Platinum Tuner: Fits Dodge/Jeep/Ram 2003-2014 5.7/6.1L HEMI
King Chrysler Dodge Hemi 5.7L/6.1L V8 Performance Rod Bearing Set - Size STDX
DiabloSport Trinity 2 (T2 EX) Programmer / Monitor: Jeep Vehicles 2005 - 2014
DiabloSport Trinity 2 (T2 EX) Programmer / Monitor: Jeep Vehicles 2005 - 2014

DiabloSport Trinity 2 (T2 EX) Programmer / Monitor: Jeep 2005-2014

Diablo Sport

Regular price $806.95 $749.95 Sale

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per 

MBRP Cat-Back 3" Single Side Exhaust System: Dodge Dakota 2005 - 2007 (3.7L / 4.7L)
MBRP Cat-Back 3" Single Side Exhaust System: Dodge Dakota 2005 - 2007 (3.7L / 4.7L)

MBRP Cat-Back 3" Single Side Exhaust System: Dodge Dakota 2005 - 2007 (3.7L / 4.7L)

MBRP

Regular price $568.22 $459.99 Sale

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per 

Yukon Bearing Install Kit Rear Chrysler 9.25in ZF: Ram 1500 2010-2018 3.6L/5.7L
Yukon Bearing Install Kit 8in IFS Diff: Dodge Ram 1500 2002-2011 3.6L/5.7L Hemi
Kleinn Key Start Air Horn System: Fits Dodge/Ram/Jeep 2008-2020
usa

Kleinn Key Start Air Horn System: Fits Dodge/Ram/Jeep 2008-2020

Kleinn Air Horns

Regular price $207.99 $179.99 Sale

Unit price
per 

Magnaflow Universal Catalytic Converter 2.25in In/Out 3in Body
Magnaflow Universal Catalytic Converter 2.25in In/Out 3in Body
usa
American Brother Designs Custom Coolant Reservoir Cap Cover: Fits Dodge / Jeep / Ram (09-26)
American Brother Designs Custom Coolant Reservoir Cap Cover: Fits Dodge / Jeep / Ram (09-26)
cbp
usa
American Brother Designs Custom Radiator Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025
cbp
usa
Pedal Commander FN TUNED Throttle Response Controller w/ Anti-Theft: Fits most Hemi Models
Pedal Commander FN TUNED Throttle Response Controller w/ Anti-Theft: Fits most Hemi Models

Pedal Commander FN TUNED Throttle Response Controller w/ Anti-Theft: Fits most Hemi Models

Pedal Commander

Regular price $289.99 $279.99 Sale

Unit price
per 

Performance Upgrades for Your 3.7L V6 and 4.7L V8 Mopar Engines

The 3.7L V6 and 4.7L V8 engines serve as reliable, versatile Mopar powerplants found in various Dodge and Jeep models. These engines respond well to targeted performance upgrades that improve power delivery, throttle response, and durability while maintaining everyday drivability. Optimizing these engines with the right parts can enhance towing capability and add spirited driving performance.

Key Benefits of Upgrading Your 3.7L and 4.7L Engines

Both the 3.7L and 4.7L engines offer solid factory foundations, but bolt-on upgrades can unlock additional efficiency and power. Enhancements to intake and exhaust systems improve airflow, while ignition and tuning components refine combustion and throttle response. These improvements help your engine run stronger and more efficiently under various driving conditions.

  • Improved torque for towing and hauling
  • Enhanced throttle response and horsepower gains
  • Better engine efficiency and reliability
  • Maintains daily drivability with quality parts

Choosing the Right Performance Parts for Your Mopar V6 or V8

When selecting upgrades for the 3.7L or 4.7L, focus on components that complement the engine’s design and intended use. Cold air intakes and throttle body enhancements increase airflow, while exhaust headers and cat-back systems reduce backpressure. Upgrading ignition components and spark plugs ensures a stronger, more consistent spark. Finally, performance tuners and calibration tools optimize fuel and ignition timing for maximum efficiency.

Explore 3.7L and 4.7L Engine Upgrades at FastHemis

Whether you’re aiming to boost torque for towing or increase horsepower for spirited driving, FastHemis offers a curated selection of performance parts tailored to your 3.7L or 4.7L Mopar engine. Shop our collection to find intake kits, exhaust systems, ignition upgrades, and tuning solutions designed to unlock your engine’s full potential.

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