3.7L / 4.0L Engine Upgrades
MagnaFlow BRE Exhaust Kit: Jeep Commander / Grand Cherokee 05-10 5.7L/3.7L
Magnaflow
$318.00
- Unit price
- /per
K&N 57 Series Cold Air Intake: Jeep Commander / Grand Cherokee 05-10 3.7L V6
K&N Engineering
$367.99
- Unit price
- /per
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
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
Regular price
$109.00
$59.00
Sale
- Unit price
- /per
DeatschWerks 42lb Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2026 (5.7L Hemi, 6.1L SRT8, 6.4L 392)
Deatschwerks
$439.00
- Unit price
- /per
Pedal Commander Bluetooth Throttle Response Controller: 300 / Challenger / Charger / Magnum 2007 - 2023 (All Models)
Pedal Commander
Regular price
$349.99
$299.99
Sale
- Unit price
- /per
Deatschwerks 60lb/hr Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2024 (5.7L Hemi, 6.1L SRT8, 6.4L 392)
Deatschwerks
$699.00
- Unit price
- /per
Deatschwerks 50lb/hr Fuel Injectors: Chrysler 300C / Dodge Challenger / Charger / Magnum 2005 - 2024 (5.7L Hemi / 6.1L & 6.4L SRT8)
Deatschwerks
$649.00
- Unit price
- /per
Edge Digital Monitor Insight CTS3: Fits Most Domestic Gas and Diesel Trucks 1996-2024 w/ Windshield Mounting Bracket
Edge
Regular price
$575.95
$549.95
Sale
- Unit price
- /per
Bully Dog GT Platinum Tuner: Fits Most Chrysler/Dodge/Jeep/Ram (03-14)
Bully Dog
$399.00
- Unit price
- /per
King Chrysler Dodge Hemi 5.7L/6.1L V8 Performance Rod Bearing Set - Size STDX
King Engine Bearings
$207.65
- Unit price
- /per
DiabloSport Trinity 2 (T2 EX) Programmer / Monitor: Jeep 2005-2014
Diablo Sport
Regular price
$806.95
$749.95
Sale
- Unit price
- /per
MBRP Cat-Back 3" Single Side Exhaust System: Dodge Dakota 2005 - 2007 (3.7L / 4.7L)
MBRP
Regular price
$568.22
$459.99
Sale
- Unit price
- /per
Deatschwerks 95lb/hr Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2024 (5.7L Hemi, 6.1L SRT8, 6.4L 392)
Deatschwerks
$719.00
- Unit price
- /per
Deatschwerks 72lb/hr Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2024 (5.7L Hemi, 6.1L SRT8, 6.4L 392)
Deatschwerks
$719.00
- Unit price
- /per
Crown Auto Timing Chain Kit (3.7L): Jeep Grand Cherokee / Commander 2005-2010
Crown Auto
$500.50
- Unit price
- /per
Crown Auto Transmission Pan Kit w/ Filter & Gasket: Fits Jeep Wrangler JK / Grand Cherokee / Dodge Charger 2011-2018
Crown Auto
$93.17
- Unit price
- /per
Crown Auto Throttle Body: Jeep Wrangler / Grand Cherokee / Commander 2007-2010 3.7L / 3.8L
Crown Auto
$200.20
- Unit price
- /per
Yukon Bearing Install Kit Rear Chrysler 9.25in ZF: Ram 1500 2010-2018 3.6L/5.7L
Yukon Gear & Axle
$383.89
- Unit price
- /per
Yukon Bearing Install Kit 8in IFS Diff: Dodge Ram 1500 2002-2011 3.6L/5.7L Hemi
Yukon Gear & Axle
$399.89
- Unit price
- /per
BD Diesel 2 Low UnLoc (LOCKER): Fits Dodge Ram 1500 / 2500 / 3500 2009-2024
BD Diesel
$200.95
- Unit price
- /per
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
Mahle OE Moly Ring Set: Fits Chrysler Dodge Ram Jeep 2009-2017 5.7L Hemi / 3.6L V6
Mahle OE
$341.88
- Unit price
- /per
Mahle OE Moly Ring Set: Fits Chrysler Dodge Ram Jeep 2009-2017 5.7L Hemi / 3.6L V6
Mahle OE
$356.90
- Unit price
- /per
Yukon Gear & Axle Bearing Install Kit 9.25in Diff: Fits Dodge Ram 2003-2018 3.6L-8.3L
Yukon Gear & Axle
$442.89
- Unit price
- /per
MagnaFlow HM Grade Direct Fit Catalytic Converter (DRIVER): Dodge Ram 1500 04-05 5.7L Hemi
Magnaflow
$335.00
- Unit price
- /per
MagnaFlow OEM Grade Direct Fit Catalytic Converter (PASSENGER): Dodge Ram 1500 04-05 5.7L Hemi w/ Torca Clamp
Magnaflow
$487.00
- Unit price
- /per
Magnaflow Direct Fit Catalytic Converter OEM Grade (DRIVER SIDE): Dodge Ram 1500 04-05 5.7L Hemi
Magnaflow
$352.00
- Unit price
- /per
aFe Silver Bullet Throttle Body Spacer: Fits Most Dodge/Jeep/Ram 5.7L/3.7L/3.6L (07-12)
aFe
$139.00
- Unit price
- /per
American Brother Designs Custom Coolant Reservoir Cap Cover: Fits Dodge / Jeep / Ram (09-26)
American Brother Designs
$59.00
- Unit price
- /per
American Brother Designs Custom Washer Fluid Cap Cover: Jeep Wrangler (18-25) & Gladiator (20-25)
American Brother Designs
$59.00
- Unit price
- /per
American Brother Designs Custom Radiator Cap Cover: 300, Challenger, Charger & Magnum 2005 - 2014
American Brother Designs
$59.00
- Unit price
- /per
American Brother Designs Custom Power Steering Fluid Cap Cover: Fits Chrysler / Dodge (05-14)
American Brother Designs
$59.00
- Unit price
- /per
American Brother Designs Custom Coolant Reservoir Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025
American Brother Designs
$59.00
- Unit price
- /per
American Brother Designs Custom Washer Fluid Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025
American Brother Designs
$59.00
- Unit price
- /per
American Brother Designs Custom Radiator Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025
American Brother Designs
$59.00
- Unit price
- /per
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
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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.