5.9L / 6.7L Diesel Engine Upgrades
Vibrant O2 Sensor Restrictor Fitting (STRAIGHT) w/ Adjustable Jets (CEL Eliminator)
Vibrant
Regular price from $22.99 25% off
- Unit price
- /per
aFe Throttle Body Spacer: Fits Dodge / Chrysler / Jeep / Ram (05-26) 5.7L Hemi / SRT8 / 392
aFe
$139.00
- Unit price
- /per
DiabloSport Modified PCM + i3 Programmer Combo: 2009+ Charger/Challenger/300 5.7L Hemi
Diablo Sport
from Free
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
- /per
S&B Cold Air Intake: Ram 6.7L Cummins Diesel 2019 - 2024 (2500 / 3500)
S&B Filters
Regular price
$429.99
$379.00
12% off
- Unit price
- /per
2 filter types
PPE MicroPure XR Engine Oil Filter: Dodge Ram Cummins 1989-2024 5.9L/6.7L
PPE
$32.99
- Unit price
- /per
Deatschwerks 60lb/hr Fuel Injectors: Fits Most Dodge/Ram (03-23)
Deatschwerks
$699.00
- 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
14% off
- Unit price
- /per
DeatschWerks Matched 550cc USCAR EV14 Fuel Injectors: Fits Most Dodge/Ram (03-23)
Deatschwerks
$649.00
- Unit price
- /per
PRW Elite Series SFI-Rated FluidGel Damper: Fits Chrysler / Dodge / Jeep / Ram 5.7L-6.4L Hemi
PRW
$220.91
- Unit price
- /per
PRW Platinum Series SS Shaft-Mount Rocker Arms Kit: Fits Chrysler / Dodge / Jeep / Ram (02-26)
PRW
$742.48
- Unit price
- /per
Gibson Ceramic Coated Performance Header: Dodge Dakota/Durango/Ram 1500 96-03 5.7L/5.2L
Gibson
$1,704.34
- Unit price
- /per
American Brother Designs Coolant Reservoir Cap Cover: Fits Jeep / Dodge / Ram (09-26)
American Brother Designs
Regular price
$109.00
$59.00
46% off
- Unit price
- /per
Flowtech Shorty Headers (Black Painted): Dodge Ram / Dakota / Durango 5.2L & 5.9L V8 1996 - 2003
Flowtech
Regular price
$518.95
$478.95
8% off
- 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
5% off
- Unit price
- /per
S&B Cold Air Intake: Ram 6.7L Cummins Diesel 2013 - 2018 (2500 / 3500)
S&B Filters
Regular price
$429.99
$379.00
12% off
- Unit price
- /per
2 filter types
DiabloSport Predator 2 Tuner: Dodge Ram / Durango / Dakota 2005 - 2018 (V6 & V8 Models)
Diablo Sport
Regular price
$532.95
$312.95
41% off
- Unit price
- /per
PRW SFI-Rated Racing Dampers: Fits Most Chrysler / Dodge / Jeep / Ram 5.7L-6.4L Hemi Engines
PRW
$273.18
- Unit price
- /per
American Brother Designs Washer Fluid Cap Cover: Jeep Wrangler (18-25) & Gladiator (20-25)
American Brother Designs
Regular price
$109.00
$59.00
46% off
- Unit price
- /per
Volant Cold Air Intake: Dodge Ram 1500/Ram 2500 94-00 5.9L Diesel/5.2L/3.9L
Volant
$385.99
- Unit price
- /per
aFe Momentum HD Pro 10R Stage-2 Intake System: Dodge Ram 2500 / Ram 3500 03-07 5.9L Diesel
aFe
$420.00
- Unit price
- /per
JBA Shorty Headers (Raw Finish): Dodge Ram 1500/Ram 2500/Ram 3500 03-08 5.9L Diesel/5.7L/3.7L
JBA
Regular price
$968.75
$880.68
9% off
- Unit price
- /per
Superchips Wireless Amp'd 2.0 Pedal Controller: Fits Most Dodge / Ram / Chrysler Models (2005-2026)
Superchips
Regular price
$322.95
$299.95
7% off
- Unit price
- /per
Bully Dog GT Platinum Tuner: Fits Most Chrysler/Dodge/Jeep/Ram (03-14)
Bully Dog
$399.00
- Unit price
- /per
K&N 57 Series Cold Air Intake: Ram 2500 / 3500 13-18 6.7L Diesel
K&N Engineering
$212.99
- 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
Flowmaster FloxFX Exhaust System (Single Side Exit): Dodge Ram 3.9L, 5.2L & 5.9L 1994 - 2001 (1500 / 2500 / 3500)
Flowmaster
Regular price
$633.95
$584.95
8% off
- Unit price
- /per
Deatschwerks 72lb/hr Fuel Injectors: Fits Most Dodge/Ram (03-23)
Deatschwerks
$719.00
- Unit price
- /per
Deatschwerks 95lb/hr Fuel Injectors: Fits Most Dodge/Ram (03-23)
Deatschwerks
$719.00
- Unit price
- /per
Cometic MLX RHS Head Gasket (4.150" Bore, .062" Thick): Fits Chrysler / Dodge / Jeep / Ram (11-26)
Cometic Gasket
Regular price
$137.84
$124.07
10% off
- Unit price
- /per
MagnaFlow Performance Exhaust Muffler: Dodge Ram 2500 / Ram 3500 98-01 8.0L/5.9L Diesel
Magnaflow
$146.00
- Unit price
- /per
Superchips F5 Flashpaq Tuner: Fits Dodge / Ram / Chrysler (98-14)
Superchips
Regular price
$518.95
$499.95
4% off
- Unit price
- /per
AMP Research Replacement Controller Xtreme Type A: Fits Most Jeep/Ram (07-23)
AMP Research
$99.99
- Unit price
- /per
S&B Cold Air Intake: Dodge Ram 5.9L Cummins Diesel 2003 - 2007 (2500 / 3500)
S&B Filters
Regular price
$429.99
$379.00
12% off
- Unit price
- /per
2 filter types
S&B Cold Air Intake: Dodge Ram 6.7L Cummins Diesel 2010 - 2012 (2500 / 3500)
S&B Filters
Regular price
$429.99
$379.00
12% off
- Unit price
- /per
2 filter types
Banks Monster-Ram Intake System Black (F&R): Ram 2500 / 3500 13-18 6.7L Diesel
Banks Power
Regular price
$831.11
$748.00
10% off
- Unit price
- /per
You’re viewing 1-40 of 487 products
5.9L Magnum & 6.7L Cummins Diesel Engine Upgrades for Torque and Reliability
The 5.9L Magnum V8 and 6.7L Cummins inline-6 are iconic diesel engines celebrated for their torque, towing strength, and durability. Whether you own a classic Ram with the 5.9L or a modern heavy-duty Ram powered by the 6.7L Cummins, upgrading these engines with diesel-specific performance parts can significantly enhance power delivery and dependability.
How Diesel Engine Upgrades Improve Your 5.9L and 6.7L Performance
Diesel engines like the 5.9L Magnum and 6.7L Cummins thrive on torque and efficiency. Upgrades focused on intake airflow, exhaust flow, and fuel delivery optimize combustion and turbocharger response. These improvements translate to stronger towing capability, better throttle response, and sustained power under load.
- High-flow intake and exhaust systems reduce restrictions and improve turbo efficiency
- Turbocharger and intercooler upgrades enhance boost control and charge air cooling
- Fuel system enhancements ensure consistent fuel delivery for higher power demands
- Performance tuning calibrates engine parameters for optimized power and reliability
Choosing the Right Upgrades for Your Diesel Engine Goals
When selecting upgrades for your 5.9L or 6.7L diesel, consider your primary use—whether it’s daily driving, heavy towing, or performance builds. Intake and exhaust modifications improve airflow, while turbocharger enhancements increase boost and efficiency. Fuel system upgrades become critical as power levels rise, and tuning ties all components together for smooth operation.
Maximize Your Diesel Engine’s Potential with FastHemis Upgrades
From intake manifolds and turbochargers to fuel system components and tuning tools, FastHemis offers a comprehensive selection of parts tailored to the 5.9L Magnum and 6.7L Cummins platforms. Explore our collection to find reliable, performance-driven upgrades that maintain the rugged durability these engines are known for.