HEMI EXPERTS OF 20 YEARS

CALL US! (626) 337-3700

Your cart

Your cart is empty

5.9L / 6.7L Diesel Engine Upgrades

SELECT YOUR VEHICLE

661 Results

Flowtech Shorty Headers (Black Painted): Dodge Ram / Dakota / Durango 5.2L & 5.9L V8 1996 - 2003
Flowtech Shorty Headers (Black Painted): Dodge Ram / Dakota / Durango 5.2L & 5.9L V8 1996 - 2003
Joe Approved

Flowtech Shorty Headers (Black Painted): Dodge Ram / Dakota / Durango 5.2L & 5.9L V8 1996 - 2003

Flowtech

Regular price $538.95 $430.95 Sale

Unit price
per 

S&B Cold Air Intake: Dodge Ram 6.7L Cummins Diesel 2010 - 2012 (2500 / 3500)
S&B Cold Air Intake: Dodge Ram 6.7L Cummins Diesel 2010 - 2012 (2500 / 3500)
Joe Approved
usa

S&B Cold Air Intake: Dodge Ram 6.7L Cummins Diesel 2010 - 2012 (2500 / 3500)

S&B Filters

$399.00

Unit price
per 

2 filter types
  • COTTON WASHABLE
  • DRY WASHABLE
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 2005 - 2026

American Brother Designs
5.0 (1)

Regular price $109.00 $59.00 Sale

Unit price
per 

PPE Battery Heat Shield: Ram 1500 / 2500 / 3500 (16-25)
PPE Battery Heat Shield: Ram 1500 / 2500 / 3500 (16-25)
usa
DeatschWerks 42lb Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2025 (5.7L Hemi, 6.1L SRT8, 6.4L 392)
DeatschWerks 42lb Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2025 (5.7L Hemi, 6.1L SRT8, 6.4L 392)

DeatschWerks 42lb Fuel Injectors: Dodge 2003 - 2024

Deatschwerks

$439.00

Unit price
per 

S&B Cold Air Intake: Ram 6.7L Cummins Diesel 2019 - 2024 (2500 / 3500)
S&B Cold Air Intake: Ram 6.7L Cummins Diesel 2019 - 2024 (2500 / 3500)
usa

S&B Cold Air Intake: Ram 6.7L Cummins Diesel 2019 - 2024 (2500 / 3500)

S&B Filters

$399.00

Unit price
per 

2 filter types
  • COTTON WASHABLE
  • DRY WASHABLE
Bully Dog GT Platinum Tuner: Fits Dodge/Jeep/Ram 2003-2014 5.7/6.1L HEMI
Bully Dog GT Platinum Tuner: Fits Dodge/Jeep/Ram 2003-2014 5.7/6.1L HEMI
Superchips F5 Flashpaq Tuner: Fits Most Hemi Models

Superchips F5 Flashpaq Tuner: Fits Dodge / Ram / Chrysler (98-14)

Superchips

Regular price $562.95 $499.95 Sale

Unit price
per 

S&B Cold Air Intake: Ram 6.7L Cummins Diesel 2013 - 2018 (2500 / 3500)
S&B Cold Air Intake: Ram 6.7L Cummins Diesel 2013 - 2018 (2500 / 3500)
usa

S&B Cold Air Intake: Ram 6.7L Cummins Diesel 2013 - 2018 (2500 / 3500)

S&B Filters

$399.00

Unit price
per 

2 filter types
  • COTTON WASHABLE
  • DRY WASHABLE
Banks Ram-Air Cold Air Intake System Dry Filter (F&R): RAM 2500/3500 2013-2018 6.7L Cummins
Banks Ram-Air Cold Air Intake System Dry Filter (F&R): RAM 2500/3500 2013-2018 6.7L Cummins
usa

Banks Ram-Air Cold Air Intake System Dry Filter: Ram 2500 / 3500 13-18 6.7L Diesel

Banks Power

Regular price $498.89 $449.00 Sale

Unit price
per 

AMP Research Wire Harness: Fits Most Ram (13-22)
AMP Research Wire Harness: Ram 1500 (13-18) / 2500 (13-22) / 3500 (13-22)

AMP Research Wire Harness: Fits Most Ram (13-22)

AMP Research

$149.99

Unit price
per 

King Chrysler Dodge Hemi 5.7L/6.1L V8 Performance Rod Bearing Set - Size STDX
K&N 57 Series Cold Air Intake: RAM 2500 & 3500 6.7L Diesel 2013-2018
K&N 57 Series Cold Air Intake: RAM 2500 & 3500 6.7L Diesel 2013-2018
American Brother Designs Fuse Box Cover: Dodge Durango (14-25), Jeep Grand Cherokee (14-21), Ram (14-25)
American Brother Designs Fuse Box Cover: Dodge Durango (14-25), Jeep Grand Cherokee (14-21), Ram (14-25)
usa

American Brother Designs Fuse Box Cover: Dodge Durango / Jeep Grand Cherokee / Ram 1500 / 2500 / 3500 2013 - 2026

American Brother Designs
5.0 (1)

Regular price $205.00 $155.00 Sale

Unit price
per 

S&B Cold Air Intake: Dodge Ram 5.9L Cummins Diesel 2003 - 2007 (2500 / 3500)
S&B Cold Air Intake: Dodge Ram 5.9L Cummins Diesel 2003 - 2007 (2500 / 3500)
usa

S&B Cold Air Intake: Dodge Ram 5.9L Cummins Diesel 2003 - 2007 (2500 / 3500)

S&B Filters

$399.00

Unit price
per 

2 filter types
  • COTTON WASHABLE
  • DRY WASHABLE
Flowmaster Force II Exhaust System: Dodge Ram 3.9L, 5.2L & 5.9L 1998 - 2001 (1500 / 2500 / 3500)
Flowmaster Force II Exhaust System: Dodge Ram 3.9L, 5.2L & 5.9L 1998 - 2001 (1500 / 2500 / 3500)
usa
ACCEL SuperTuner Performance Tuner: Fits Most Dodge / Ram / Chrysler Models (1999-2013)
ACCEL SuperTuner Performance Tuner: Fits Most Dodge / Ram / Chrysler Models (1999-2013)

ACCEL SuperTuner Performance Tuner: Fits Most Dodge / Ram / Chrysler Models (1999-2013)

ACCEL

Regular price $514.95 $456.95 Sale

Unit price
per 

AEM DryFlow Air Filter: Dodge/RAM 2500/3500 2003-2012 5.9/6.7L Diesel
AEM DryFlow Air Filter: Dodge/RAM 2500/3500 2003-2012 5.9/6.7L Diesel

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.

SELECT YOUR VEHICLE