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3.7L / 4.0L Engine Upgrades

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228 Results

Magnaflow Direct-Fit Replacement Exhaust System: Dodge Ram 1500 (06-08) (106-0132)
Magnaflow Direct-Fit Replacement Exhaust System: Dodge Ram 1500 (06-08) (106-0132)
Joe Approved
usa
Superchips Flashcal and Amp'd 2.0 Kit: Fits Most Dodge / Ram Models 2007-2017
Superchips Flashcal and Amp'd 2.0 Kit: Fits Most Dodge / Ram Models 2007-2017

Superchips Flashcal and Amp'd 2.0 Kit: Fits Most Dodge / Ram Models 2007-2017

Superchips

Regular price $731.95 $628.95 Sale

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per 

Superchips Wireless Amp'd 2.0 Pedal Controller: Fits Most Dodge / Ram / Chrysler Models (2005-2026)

Superchips Wireless Amp'd 2.0 Pedal Controller: Fits Most Dodge / Ram / Chrysler Models (2005-2026)

Superchips
5.0 (1)

Regular price $322.95 $268.95 Sale

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Motul 1L Synthetic Engine Oil 8100 Eco-Lite Gen3 5W30

Motul 8100 Eco-Lite Gen3 5W-30 (1L Bottle)

Motul

Regular price $15.99 $14.39 Sale

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per 

Motul 300V Power 5W-30 (2L Bottle)

Motul 300V Power 5W-30 (2L Bottle)

Motul

Regular price $64.06 $57.65 Sale

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Motul 8100 X-CESS 5W-30 (1L Bottle)

Motul 8100 X-CESS 5W-30 (1L Bottle)

Motul

Regular price $18.47 $16.62 Sale

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Motul 8100 X-CESS 5W-30 (5L Bottle)

Motul 8100 X-CESS 5W-30 (5L Bottle)

Motul

Regular price $79.34 $71.40 Sale

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Motul 8100 ECO-NERGY 5W-30 (1L Bottle)

Motul 8100 ECO-NERGY 5W-30 (1L Bottle)

Motul

Regular price $19.36 $17.43 Sale

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AFE Air Filter: Jeep Commander / Grand Cherokee 2005 - 2010 (All Models)
AFE Air Filter: Jeep Commander / Grand Cherokee 2005 - 2010 (All Models)
usa

aFe Magnum FLOW Pro 5R Air Filter: Jeep Grand Cherokee 2005 - 2010

aFe

from $91.00

Unit price
per 

2 filter types
  • Pro 5R (Oiled)
  • Pro Dry-S (Non-Oiled)
Flowmaster 40 Series Chambered Muffler: Dodge Challenger 2014 / Dakota (97-10)
Flowmaster 40 Series Chambered Muffler: Dodge Challenger 2014 / Dakota (97-10)
usa

Flowmaster 40 Series Chambered Muffler: Dodge Challenger 2014 / Dakota (97-10)

Flowmaster

Regular price $114.95 $101.95 Sale

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per 

Liqui Moly Truck Series Oil Treatment: Fits Most Models
Liqui Moly Truck Series Oil Treatment: Fits Most Models

Liqui Moly Truck Series Oil Treatment: Fits Most Models

LIQUI MOLY

$137.94

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per 

Superchips Flashcal Calibration Tool: Dodge Ram 1500 / 2500 / 3500 (98-17)

Superchips Flashcal Calibration Tool: Dodge Ram 1500 / 2500 / 3500 (98-17)

Superchips

Regular price $337.95 $285.95 Sale

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per 

MSD Ignition DIS-4 Plus Ignition Control: Fits Chrysler / Dodge / Jeep (92-06)
MSD Ignition DIS-4 Plus Ignition Control: Fits Chrysler / Dodge / Jeep (92-06)

MSD Ignition DIS-4 Plus Ignition Control: Fits Chrysler / Dodge / Jeep (92-06)

MSD Ignition

Regular price $1,094.95 $913.95 Sale

Unit price
per 

Liqui Moly MoS2 Anti-Friction Engine Treatment: Fits Most Models
Liqui Moly MoS2 Anti-Friction Engine Treatment: Fits Most Models
Magnaflow Universal Catalytic Converter: Fits Dodge / Jeep (81-88)
Magnaflow Universal Catalytic Converter: Fits Dodge / Jeep (81-88)
usa

Magnaflow Universal Catalytic Converter: Dodge Dakota 92-11

Magnaflow

$1,321.00

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per 

Motul 1L Synthetic Engine Oil 8100 X-CLEAN 5W30

Motul 8100 X-CLEAN 5W-30 (1L Case of 12)

Motul

Regular price $245.52 $221.04 Sale

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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.

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