3.7L / 4.0L Engine Upgrades
King Engine Bearings Connecting Rod Bearing Set: Fits Most Jeep/Ram 5.7L/3.7L/3.6L (05-12)
King Engine Bearings
$100.85
- Unit price
- /per
King Engine Bearings Connecting Rod Bearing Set: Fits Most Jeep/Ram 5.7L/3.7L/3.6L (05-12)
King Engine Bearings
$100.85
- Unit price
- /per
King Engine Bearings Main Bearing Set: Fits Most Jeep/Ram 5.7L/3.7L/3.6L (05-12)
King Engine Bearings
$62.65
- Unit price
- /per
Odyssey Battery HD Extreme AGM Battery: Fits Most Dodge/Jeep (99-10)
Odyssey Battery
Regular price
$505.20
$451.99
Sale
- Unit price
- /per
Odyssey Battery HD Perf AGM Battery: Fits Most Dodge/Jeep (99-10)
Odyssey Battery
Regular price
$442.73
$390.99
Sale
- Unit price
- /per
Westin Black Sensor Relocator (FRONT): Fits Most Dodge/Ram (09-24)
Westin
Regular price
$135.00
$107.99
Sale
- Unit price
- /per
Westin Polished Sensor Relocator (FRONT): Fits Most Dodge/Ram (09-24)
Westin
Regular price
$153.75
$122.99
Sale
- Unit price
- /per
Westin Black Nerf Step Bar Mount Kit: Jeep Commander/Grand Cherokee 05-11 6.1L/5.7L/3.7L/3.6L
Westin
$257.50
- Unit price
- /per
Westin Black Running Board Mount Kit: Jeep Commander/Grand Cherokee 05-10 6.1L/5.7L/3.7L
Westin
$242.50
- Unit price
- /per
Mishimoto Screw On Oil Funnel Full Kit: Fits Most Chrysler/Dodge/Jeep/Ram (10-13)
Mishimoto
Regular price
$117.00
$105.95
Sale
- Unit price
- /per
Mishimoto Screw-On Oil Funnel Kit: Fits Most Chrysler/Dodge/Jeep/Ram (07-13)
Mishimoto
Regular price
$30.00
$26.95
Sale
- Unit price
- /per
K&N Engineering Perf Gold Oil Filter: Fits Most Dodge/Jeep 3.9L/3.7L/2.4L (02-08)
K&N Engineering
$17.99
- Unit price
- /per
K&N Engineering Oil Filter: Fits Most Dodge/Jeep/Ram 5.7L/3.7L/3.6L (09-13)
K&N Engineering
$17.99
- Unit price
- /per
Injen PowerFlow Cold Air Intake System Polished: Jeep Grand Cherokee 05-10 5.7L/3.7L
Injen
$435.60
- Unit price
- /per
Injen PowerFlow Cold Air Intake Wrinkle Black: Jeep Grand Cherokee 05-10 5.7L/3.7L
Injen
$435.60
- Unit price
- /per
Hellwig Hardware Kit: Fits Most Dodge/Ram (94-25)
Hellwig
Regular price
$255.55
$178.90
Sale
- Unit price
- /per
MagnaFlow Street Series Cat-Back Exhaust Polished Tips (REAR): Jeep Grand Cherokee 07-10
Magnaflow
$705.00
- Unit price
- /per
Magnaflow Direct Fit Catalytic Converter Federal/EPA (F&R): Jeep Commander / Grand Cherokee 05-07 3.7L V6
Magnaflow
$631.00
- Unit price
- /per
Liqui Moly Multipurpose Grease: Fits Most Jeep 5.7L/5.2L/4.0L/3.7L/2.5L (91-07)
LIQUI MOLY
$131.88
- Unit price
- /per
Liqui Moly Special Tec LL Motor Oil 5W-30: Fits Most Chrysler / Dodge / Jeep Models (1L Case of 6)
LIQUI MOLY
$125.94
- Unit price
- /per
Liqui Moly Special Tec LL Motor Oil 5W-30: Fits Most Chrysler / Dodge / Jeep Models (5L Case of 4)
LIQUI MOLY
$379.96
- Unit price
- /per
PPE Fuel Rail Pressure Gauge: Dodge Ram / Challenger / Charger 2003-2017
PPE
$139.99
- Unit price
- /per
Magnaflow Universal 2.25in CARB Cat Converter: Dodge Durango / Ram 1500 04-06 5.7L, Jeep Commander 06 3.7L
Magnaflow
$1,139.00
- 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.