Shop 6.4L Hemi
American Brother Designs Coolant Reservoir Cap Cover: Chrysler, Dodge, Jeep & Ram 2005 - 2025
American Brother Designs
Regular price
$109.00
$59.00
46% off
- Unit price
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Cometic Rear Main Seal Set: Chrysler / Dodge / Jeep 5.7L Hemi / 6.1L SRT8 / 6.4L 392 / 6.2L SRT Hellcat
Cometic Gasket
Regular price
$46.62
$41.96
10% off
- Unit price
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American Racing Headers: Ram 5.7L Hemi / 6.4L 392 2500 2014 - 2025
American Racing Headers
Regular price from $2,245.72 Up to 13% off
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DiabloSport Pulsar Computer Programmer: Dodge Ram 6.4L 392 2019 - 2022 (2500 / 3500 Models)
Diablo Sport
Regular price
$863.95
$767.95
11% off
- Unit price
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Bilstein B6 Perf Shock Absorber Monotube (REAR): 11-23 Challenger / Charger / 300 RWD
Bilstein
Regular price
$222.00
$149.00
33% off
- Unit price
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BMR 35mm Front Sway Bar (Black): 300 / Challenger / Charger / Magnum 2005 - 2024
BMR Suspension
$209.95
- Unit price
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AFE Momentum GT Cold Air Intake: Jeep Grand Cherokee 6.4L SRT 2012 - 2023
aFe
from $451.00
- Unit price
- /per
2 filter types
American Racing Headers: Jeep Grand Cherokee 6.4L SRT & 6.2L Trackhawk 2012 - 2021
American Racing Headers
Regular price from $1,980.73 Up to 15% off
- Unit price
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Granatelli 95mm Throttle Body Black: Fits HEMI 2013-2024 5.7/6.1/6.4L
Granatelli Motor Sports
Regular price
$682.50
$648.38
5% off
- Unit price
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Amerihood SSK Functional Ram Air Hood: Dodge Ram 3500 2019 - 2022
Amerihood
Regular price
$900.00
$696.00
23% off
- Unit price
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American Brother Designs Strut Tower Covers: 300 / Challenger / Charger / Magnum 2005 - 2023
American Brother Designs
Regular price
$242.50
$189.00
22% off
- Unit price
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RAM Clutches Concept 10.5 Twin Disc Clutch Kit (Organic): Dodge Challenger (08-23)
RAM Clutches
Regular price
$1,379.00
$1,149.00
17% off
- Unit price
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Amerihood SSK Functional Ram Air Hood: Dodge Ram 2500 2010 - 2019
Amerihood
Regular price
$878.42
$694.36
21% off
- Unit price
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Amerihood Hellcat Functional Ram Air Hood: Dodge Charger 2011 - 2014
Amerihood
Regular price
$786.02
$615.16
22% off
- Unit price
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American Brother Designs DODGE LOGO Exterior Trunk Badge: Dodge Challenger 2015 - 2023
American Brother Designs
Regular price
$102.00
$89.00
13% off
- Unit price
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American Car Craft 5.7L Hemi Engine Shroud Dress Up Kit: Dodge Challenger R/T 2009 - 2023
American Car Craft
Regular price
$178.95
$166.95
7% off
- Unit price
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Gates Racing Micro-V Serpentine Belt: 300 / Challenger / Charger 5.7L Hemi 2012 - 2024
Gates
$36.84
- Unit price
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Driveshaft Shop 1-Piece 4" Aluminum Driveshaft: Dodge Charger 5.7L Hemi & 6.4L 392 w/ Automatic Transmission 2015 - 2023
Driveshaft Shop
$1,274.98
- Unit price
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Ripp Hi-Perf Coil Packs: Fits Dodge / Chrysler / Jeep V8 (02-26)
Ripp
from $489.46
- Unit price
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6 colors





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DeatschWerks 42lb Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2025 (5.7L Hemi, 6.1L SRT8, 6.4L 392)
Deatschwerks
$439.00
- Unit price
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BMR Solid Motor Mount Kit: 300 / Challenger / Charger 2011 - 2024 (3.6L V6, 5.7L Hemi, 6.4L 392)
BMR Suspension
$149.95
- Unit price
- /per
PPE Cast Aluminum Transmission Pan Deep (ZF 8-Speed): Fits Ram/Dodge/Jeep 2013-2025
PPE
from $329.99
- Unit price
- /per
American Brother Designs Hellcat Supercharger Badge: Dodge Challenger & Charger 2015 - 2023
American Brother Designs
Regular price
$91.00
$41.00
55% off
- Unit price
- /per
Eibach Rear Sway Bar End Link Kit Adjustable: Challenger / Charger 2011-2023
Eibach
Regular price
$210.00
$189.00
10% off
- Unit price
- /per
BMR Rear Shock Tower Brace Red (REAR): Fits Challenger / Charger / Magnum / 300 2006-2023
BMR Suspension
$259.95
- Unit price
- /per
Amerihood SSK Functional Ram Air Hood: Dodge Ram 2500 2019 - 2022
Amerihood
Regular price
$900.00
$696.00
23% off
- Unit price
- /per
Amerihood DEMON Functional Ram Air Hood: Dodge Durango 2011 - 2023
Amerihood
Regular price
$600.00
$534.00
11% off
- Unit price
- /per
American Brother Designs SCATPACK Acrylic Badge (2-Color): Dodge Challenger / Charger 2015 - 2023
American Brother Designs
Regular price
$126.00
$53.50
58% off
- Unit price
- /per
Sto N Sho Quick Release Front License Plate Bracket: Dodge Challenger 2015 - 2023 (w/OUT Adaptive Cruise)
StoNSho
Regular price
$109.99
$97.99
11% off
- Unit price
- /per
Amerihood SSK Functional Ram Air Hood: Dodge Ram 3500 2010 - 2019
Amerihood
Regular price
$878.42
$694.36
21% off
- Unit price
- /per
E3 Spark Plugs: Ram / Durango / Jeep Grand Cherokee 6.4L 392 2012 - 2025
E3
Regular price
$12.00
$6.49
46% off
- Unit price
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American Brother Designs SRT Under Hood Insulation Badge: Dodge Challenger 2015 - 2023
American Brother Designs
Regular price
$71.00
$55.00
23% off
- Unit price
- /per
DBA Slotted Front Brake Rotors: Jeep Grand Cherokee SRT 2012 - 2021
DBA
Regular price
$464.43
$392.98
15% off
- Unit price
- /per
K&N High-Flow Original Lifetime Engine Air Filter: Fits Jeep/Dodge 2011-2025 3.6L & 5.7/6.4L HEMI
K&N Engineering
$55.19
- Unit price
- /per
SPC Performance Adjustable Rear Camber Kit: Chrysler 300 2005-2024
SPC Performance
$69.69
- Unit price
- /per
American Brother Designs 392 Exterior Side Badge: Chrysler / Dodge / Jeep / Ram
American Brother Designs
Regular price
$180.00
$167.00
7% off
- Unit price
- /per
Amerihood SRT Functional Ram Air Hood: Chrysler 300 2011 - 2024
Amerihood
Regular price
$500.00
$458.00
8% off
- Unit price
- /per
Stainless Works Long Tube Headers & Mid Pipes: Jeep Grand Cherokee 6.4L SRT 2012 - 2021
Stainless Works
Regular price
$2,695.00
$2,560.25
5% off
- Unit price
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Performance Upgrades for Your 6.4L 392 Hemi
The 6.4L 392 Hemi is a naturally aspirated powerhouse known for its strong forged internals and high-flow cylinder heads. Delivering robust power and torque from the factory, it provides an excellent platform for enthusiasts aiming to enhance performance while maintaining reliability. At FastHemis, you’ll find parts designed specifically to unlock the full potential of this Mopar favorite.
Why upgrade performance parts on your 6.4L Hemi?
Upgrading your 6.4L Hemi’s components can significantly improve power delivery, throttle response, and overall engine efficiency. Whether you want to increase airflow with cold air intakes or extract more power through long tube headers and exhaust systems, these bolt-on upgrades complement the engine’s strong factory foundation. Enhancements also help tailor your build to specific driving styles and performance goals.
- Improved air and exhaust flow for better combustion
- Enhanced throttle response and engine sound
- Supports future forced induction or camshaft upgrades
- Maintains the engine’s legendary durability and reliability
Popular upgrade paths for the 6.4L 392 Hemi
The 6.4L Hemi responds well to a variety of performance modifications that suit naturally aspirated and boosted builds alike. Common upgrades include supercharger and procharger kits for substantial power gains, long tube headers to reduce exhaust backpressure, and cold air intakes to increase airflow. Tuners and performance calibration tools are also essential to optimize these modifications and ensure smooth operation.
Choosing the right 6.4L Hemi parts at FastHemis
FastHemis offers a comprehensive selection of performance parts tailored to the 6.4L 392 Hemi. Whether you’re starting with bolt-ons or planning a full build, our inventory supports every stage of your project. Browse our collection to find supercharger kits, exhaust upgrades, intake systems, and tuning tools designed to maximize your engine’s capability while preserving its durability.