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Shop 3.9L

Upgrade Your 3.9L V6 Engine The 3.9L V6 is a classic Mopar engine known for its smooth operation and dependable performance in various Chrysler and Dodge models. While not as common as the V8 Hemis, the 3.9L offers a solid foundation for drivers seeking reliable power and daily drivability. At FastHemis, you’ll find performance parts and upgrades tailored specifically for the 3.9L platform. Whether you’re looking to improve throttle response, enhance cooling, or maintain your engine’s longevity, our selection supports both maintenance and mild performance enhancements. From intake and ignition components to exhaust upgrades, these parts help you get the most from your 3.9L V6. Key upgrade options for your 3.9L include: - Intake and throttle body upgrades for better airflow - Ignition system enhancements for improved spark - Cooling system components to manage engine temps - Exhaust upgrades for smoother flow and sound Shop 3.9L V6 upgrades at FastHemis.
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1267 Results

American Brother Designs Oil Cap Cover: Chrysler / Dodge / Jeep / Ram Hemi 2005 - 2024
American Brother Designs Oil Cap Cover: Chrysler / Dodge / Jeep / Ram Hemi 2005 - 2024
usa

American Brother Designs Oil Cap Cover: Chrysler / Dodge / Jeep / Ram Hemi 2005 - 2024

American Brother Designs
4.5 (2)

Regular price $101.49 $69.00 32% off

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per 

Vibrant O2 Sensor Restrictor Fitting (STRAIGHT) w/ Adjustable Jets (CEL Eliminator)
Vibrant O2 Sensor Restrictor Fitting (STRAIGHT) w/ Adjustable Jets (CEL Eliminator)

Vibrant O2 Sensor Restrictor Fitting (STRAIGHT) w/ Adjustable Jets (CEL Eliminator)

Vibrant
5.0 (1)

Regular price from $22.99 25% off

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per 

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 46% off

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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 46% 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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Spec D LED Projector HeadLights (Black): Dodge Dakota / Durango 1997 - 2004
Spec D LED Projector HeadLights (Black): Dodge Dakota / Durango 1997 - 2004

Spec D LED Projector HeadLights (Black): Dodge Dakota / Durango 1997 - 2004

Spec D
5.0 (4)

Regular price $224.00 $166.00 26% 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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Amerihood SSK Functional Ram Air Hood: Dodge Ram 1500 2002 - 2008
Amerihood SSK Functional Ram Air Hood: Dodge Ram 1500 2002 - 2008

Amerihood SSK Functional Ram Air Hood: Dodge Ram 1500 2002 - 2008

Amerihood
4.0 (1)

Regular price $878.42 $694.36 21% off

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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)
Mishimoto Low Temp Thermostat: 3.7L & 4.7L Dodge & Jeep
Mishimoto Low Temp Thermostat: 3.7L & 4.7L Dodge & Jeep

Mishimoto Low Temp Thermostat: 3.7L & 4.7L Dodge & Jeep

Mishimoto

Regular price $76.00 $68.95 9% off

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per 

Spec D Euro Tail Lights (Dark Smoke): Dodge Ram 2002 - 2006
Spec D Euro Tail Lights (Dark Smoke): Dodge Ram 2002 - 2006

Spec D Euro Tail Lights (Dark Smoke): Dodge Ram 2002 - 2006

Spec D

Regular price $84.00 $62.00 26% off

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Maxtrac Twin Tube Gas Rear Shock Absorber 2in Lift: Fits Most Dodge / Ram Models (1994-2018)
usa

Maxtrac Twin Tube Gas Rear Shock Absorber 2in Lift: Fits Most Dodge / Ram Models (1994-2018)

Maxtrac

Regular price $70.05 $60.50 14% off

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MaxTrac Twin Tube Gas Front Shock Absorber 2in Lift: Fits Most Dodge / Ram 1500 Models (2002-2018)
usa
APS Black Stainless Lower Billet Grille: Dodge Ram Sport 2002 - 2005
APS Black Stainless Lower Billet Grille: Dodge Ram Sport 2002 - 2005

APS Black Stainless Lower Billet Grille: Dodge Ram Sport 2002 - 2005

APS

Regular price $55.13 $44.10 20% off

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ANZO Tail Lights (Black): Dodge Dakota 1997 - 2004
ANZO Tail Lights (Black): Dodge Dakota 1997 - 2004
DiabloSport Predator 2 Tuner: Dodge Ram / Ram / Durango / Dakota 2005 - 2018 (V6 & V8 Models)
DiabloSport Predator 2 Tuner: Dodge Ram / Ram / Durango / Dakota 2005 - 2018 (V6 & V8 Models)

DiabloSport Predator 2 Tuner: Dodge Ram / Durango / Dakota 2005 - 2018 (V6 & V8 Models)

Diablo Sport
5.0 (2)

Regular price $532.95 $369.00 31% off

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per 

Baer 15" Extreme Front Big Brake Kit: Dodge Ram 1500 2002 - 2023
Baer 15" Extreme Front Big Brake Kit: Dodge Ram 1500 2002 - 2023
usa

Baer 15" Extreme Front Big Brake Kit: Dodge Ram 1500 2002 - 2023

Baer

Regular price from $3,935.00 9% off

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Stopping Power
Noise Level
Performance Over Stock
Dust Levels
Spec D Euro Tail Lights (Black): Dodge Dakota 1997 - 2004
Spec D Euro Tail Lights (Black): Dodge Dakota 1997 - 2004

Spec D Euro Tail Lights (Black): Dodge Dakota 1997 - 2004 (LT-DAK97JM-TM)

Spec D

Regular price $122.00 $90.00 26% off

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Flowmaster FloxFX Exhaust System (Single Side Exit): Dodge Ram 3.9L, 5.2L & 5.9L 1994 - 2001 (1500 / 2500 / 3500)
Flowmaster FloxFX Exhaust System (Single Side Exit): Dodge Ram 3.9L, 5.2L & 5.9L 1994 - 2001 (1500 / 2500 / 3500)
usa
Spec D LED Tail Lights (Dark Smoke, G2): Dodge Ram 2002 - 2005
Spec D LED Tail Lights (Dark Smoke, G2): Dodge Ram 2002 - 2005

Spec D LED Tail Lights (Dark Smoke, G2): Dodge Ram 2002 - 2005

Spec D

Regular price $219.00 $162.00 26% off

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Spec D Mesh Grille (Glossy Black): Dodge Ram 1994 - 2002
Spec D Mesh Grille (Glossy Black): Dodge Ram 1994 - 2002

Spec D Mesh Grille (Glossy Black): Dodge Ram 1994 - 2002

Spec D

Regular price $134.00 $99.00 26% off

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per 

Spec D LED Projector HeadLights (Chrome): Dodge Ram 2002 - 2005
Spec D LED Projector HeadLights (Chrome): Dodge Ram 2002 - 2005

Spec D LED Projector HeadLights (Chrome): Dodge Ram 2002 - 2005

Spec D

Regular price $224.00 $166.00 26% off

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per 

AirAid Throttle Body Spacer: Dodge Ram 5.2L V8 & 5.9L V8 1994-2002
AirAid Throttle Body Spacer: Dodge Ram 5.2L V8 & 5.9L V8 1994-2002
K&N 77 Series Cold Air Intake: Dodge Dakota / Durango 4.7L 2000 - 2004
K&N 77 Series Cold Air Intake: Dodge Dakota / Durango 4.7L 2000 - 2004
Bilstein B6 4600 Front Shock: Dodge Ram 1500 4WD 1994 - 2001 (w/ OEM Ride Height)
Bilstein B6 4600 Front Shock: Dodge Ram 1500 4WD 1994 - 2001 (w/ OEM Ride Height)

Bilstein B6 4600 Front Shock: Dodge Ram 1500 4WD 1994 - 2001 (w/ OEM Ride Height)

Bilstein

Regular price $136.85 $92.00 33% off

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Baer Claw Drilled & Slotted Zinc-Plated Rotor and Ceramic Performance Pad Combo Kit (FRONT): Fits Most Hemi Models
usa

Baer Claw Drilled & Slotted Zinc-Plated Rotor and Ceramic Performance Pad Combo Kit (FRONT): Ram 1500 (06-17) / Durango (07-09)

Baer

Regular price $375.95 $300.55 20% off

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per 

Stopping Power
Noise Level
Performance Over Stock
Dust Levels
Spec D Factory Style Fender Flares (Smooth Black, 4pc): Dodge Ram (w/ 6.5ft bed) 2002 - 2009
Spec D Factory Style Fender Flares (Smooth Black, 4pc): Dodge Ram (w/ 6.5ft bed) 2002 - 2009

Spec D Factory Style Fender Flares (Smooth Black, 4pc): Dodge Ram (w/ 6.5ft bed) 2002 - 2009

Spec D

Regular price $116.00 $86.00 26% off

Unit price
per 

Spec D OEM Style Headlights w/ LED Bar (Chrome): Dodge Ram 1994 - 2002
Spec D OEM Style Headlights w/ LED Bar (Chrome): Dodge Ram 1994 - 2002

Spec D OEM Style Headlights w/ LED Bar (Chrome): Dodge Ram 1994 - 2002

Spec D

Regular price $259.00 $192.00 26% off

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per 

Spec D Riveted Style Fender Flares (Textured Black, 4pc): Dodge Ram 2002 - 2009
Spec D Riveted Style Fender Flares (Textured Black, 4pc): Dodge Ram 2002 - 2009

Spec D Riveted Style Fender Flares (Textured Black, 4pc): Dodge Ram 2002 - 2009

Spec D

Regular price $176.00 $130.00 26% off

Unit price
per 

Spec D LED Tail Lights (Smoke, Version 2): Dodge Ram 2002 - 2006
Spec D LED Tail Lights (Smoke, Version 2): Dodge Ram 2002 - 2006

Spec D LED Tail Lights (Smoke, Version 2): Dodge Ram 2002 - 2006

Spec D

Regular price $155.00 $115.00 26% off

Unit price
per 

Spec D LED Tail Lights (Red, G2): Dodge Ram 2002 - 2005
Spec D LED Tail Lights (Red, G2): Dodge Ram 2002 - 2005

Spec D LED Tail Lights (Red, G2): Dodge Ram 2002 - 2005

Spec D

Regular price $219.00 $162.00 26% off

Unit price
per 

Spec D Crystal Headlights (Smoke): Dodge Ram 1994 - 2002
Spec D Crystal Headlights (Smoke): Dodge Ram 1994 - 2002

Spec D Crystal Headlights (Smoke): Dodge Ram 1994 - 2002

Spec D

Regular price $122.00 $90.00 26% off

Unit price
per 

Spec D Power Towing Mirrors: Dodge Ram 2002 - 2009
Spec D Power Towing Mirrors: Dodge Ram 2002 - 2009

Spec D Power Towing Mirrors: Dodge Ram 2002 - 2009

Spec D

Regular price $198.00 $147.00 26% off

Unit price
per 

Performance Upgrades for Your 3.9L V6 Mopar Engine

The 3.9L V6 is a reliable and smooth-running engine found in various Chrysler and Dodge models, offering solid daily drivability with dependable power. While it may not have the high-performance pedigree of Mopar’s V8 Hemis, the 3.9L platform still benefits greatly from targeted upgrades that improve airflow, ignition, cooling, and exhaust flow.

How to Improve Airflow and Throttle Response on the 3.9L V6

Enhancing intake and throttle body components is one of the most effective ways to boost your 3.9L’s responsiveness and efficiency. Upgraded intake manifolds and throttle bodies increase the volume and quality of air entering the engine, which helps improve combustion and overall performance without sacrificing reliability.

  • Install high-flow air filters and intake manifolds for better breathing
  • Upgrade throttle bodies to improve throttle response and reduce lag
  • Ensure proper fitment to maintain smooth drivability and engine longevity

Maintaining Engine Health with Cooling and Ignition Upgrades

Keeping your 3.9L V6 running cool and firing efficiently is key to long-term reliability. Upgrading cooling system components such as radiators, thermostats, and fans helps manage engine temperatures during daily driving or mild performance use. Meanwhile, ignition system enhancements like high-quality coils and spark plugs ensure consistent spark delivery for smooth operation.

Exhaust and Maintenance Parts to Maximize Your 3.9L V6

Exhaust upgrades tailored for the 3.9L V6 improve flow and sound while supporting better engine efficiency. Combined with routine maintenance parts, these upgrades help you get the most out of your Mopar engine. Explore FastHemis’ selection of 3.9L-specific performance and maintenance components to keep your engine running strong and responsive.

SELECT YOUR VEHICLE