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3.7L / 4.7L Engine Upgrades

Upgrade Your 3.7L and 4.7L Engines with Performance Parts The 3.7L V6 and 4.7L V8 engines offer solid Mopar foundations known for their durability and versatility across Dodge and Jeep models. These engines respond well to targeted upgrades that enhance power delivery, throttle response, and overall reliability without sacrificing daily drivability. At FastHemis, you’ll find a range of performance parts crafted to optimize your 3.7L or 4.7L engine. From intake and exhaust upgrades to ignition and tuning components, each product is selected to unlock more capability and improve engine efficiency. Whether you’re looking to boost torque for towing or add horsepower for spirited driving, these upgrades help you get the most from your Mopar powerplant. Key upgrade options include: - Cold air intakes and throttle body enhancements - Exhaust headers and cat-back systems - Ignition and spark plug upgrades - Performance tuners and calibration tools Shop 3.7L / 4.7L engine upgrades at FastHemis.
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239 Results

DiabloSport inTune i3 Platinum Programmer: 300 / Challenger / Charger / Magnum / Ram / Durango 2005 - 2014
DiabloSport inTune i3 Platinum Programmer: 300 / Challenger / Charger / Magnum / Ram / Durango 2005 - 2014

DiabloSport inTune i3 Platinum Programmer: Fits Dodge / Chrysler / Ram (05-14)

Diablo Sport
4.8 (8)

Regular price $535.95 $475.95 11% off

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per 

American Brother Designs Oil Cap Cover: Chrysler / Dodge / Jeep / Ram Hemi 2005 - 2025
American Brother Designs Oil Cap Cover: Chrysler / Dodge / Jeep / Ram Hemi 2005 - 2025
usa

American Brother Designs Oil Cap Cover: Chrysler / Dodge / Jeep / Ram Hemi 2005 - 2025

American Brother Designs
4.5 (2)

Regular price $101.49 $69.00 32% off

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per 

DiabloSport inTune i3 Platinum Programmer: Jeep Grand Cherokee / Wrangler / Commander 2005 - 2014
DiabloSport inTune i3 Platinum Programmer: Jeep Grand Cherokee / Wrangler / Commander 2005 - 2014

DiabloSport inTune i3 Platinum Programmer: Jeep Grand Cherokee / Wrangler / Commander 2005 - 2014

Diablo Sport
4.5 (2)

Regular price $535.95 $475.95 11% off

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per 

DiabloSport inTune i3 Programmer: 300 / Challenger / Charger / Magnum / Ram / Durango 2005 - 2014
DiabloSport inTune i3 Programmer: 300 / Challenger / Charger / Magnum / Ram / Durango 2005 - 2014

DiabloSport inTune i3 Programmer: 300 / Challenger / Charger / Magnum / Ram / Durango 2005 - 2014

Diablo Sport
5.0 (2)

Regular price $535.95 $475.95 11% off

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per 

American Brother Designs Engine Bay Tag: Chrysler / Dodge / Jeep / Ram
American Brother Designs Engine Bay Tag: Chrysler / Dodge / Jeep / Ram
usa

American Brother Designs Engine Bay Tag: Chrysler / Dodge / Jeep / Ram

American Brother Designs
5.0 (1)

Regular price $76.00 $56.00 26% off

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per 

Bully Dog 06-21 Dodge Charger / 08-21 Dodge Challenger Thruster Throttle Booster
Bully Dog 06-21 Dodge Charger / 08-21 Dodge Challenger Thruster Throttle Booster

Bully Dog Thruster Throttle Booster: Fits Most Chrysler / Dodge / Jeep / Ram Models (2005-2022)

Bully Dog

Regular price $299.00 $157.57 47% off

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

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

Diablo Sport
4.0 (1)

Regular price $806.95 $716.95 11% off

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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

Regular price $109.00 $59.00 46% off

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DiabloSport inTune i3 Programmer: Jeep Grand Cherokee / Wrangler / Commander 2005 - 2014
DiabloSport inTune i3 Programmer: Jeep Grand Cherokee / Wrangler / Commander 2005 - 2014

DiabloSport inTune i3 Programmer: Jeep Grand Cherokee / Wrangler / Commander 2005 - 2014

Diablo Sport

Regular price $535.95 $475.95 11% off

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per 

DiabloSport Predator 2 Tuner: Jeep Grand Cherokee /  Wrangler / Commander 2005 - 2014 (V6 & V8 Models)
DiabloSport Predator 2 Tuner: Jeep Grand Cherokee /  Wrangler / Commander 2005 - 2014 (V6 & V8 Models)
Gibson 98-03 Dodge Dakota R/T 5.9L 1-1/2in 16 Gauge Performance Header - Ceramic Coated
Gibson 98-03 Dodge Dakota R/T 5.9L 1-1/2in 16 Gauge Performance Header - Ceramic Coated
usa

Gibson Ceramic Coated Performance Header: Dodge Dakota (96-03) / Durango (98-03) / Ram 1500 (96-03)

Gibson

Regular price $1,704.34 $783.29 54% off

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COMP Cams Dodge Hemi (Non MDS) Lifter Kit w/ 4 Yokes
COMP Cams Dodge Hemi (Non MDS) Lifter Kit w/ 4 Yokes
usa
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 Vehicles 2005 - 2014

Diablo Sport

Regular price $806.95 $716.95 11% off

Unit price
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

Regular price $568.22 $459.99 19% off

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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.

SELECT YOUR VEHICLE