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

674 Results

Diamond Eye KIT 5in DPF Single AL: Dodge Ram 2500 / 3500 2007-12 Diesel

Diamond Eye KIT 5in DPF Single AL: Dodge Ram 2500 / 3500 2007-12 Diesel

Diamond Eye Performance

$749.97

Unit price
per 

BD Diesel Screamer Turbo HE300VG: Ram 2500 / 3500 2019-2024 6.7L Diesel
K&N Diesel Dryflow Engine Air Filter: Ram 2500/3500 2010-2012 6.7L

K&N Diesel Dryflow Engine Air Filter: Ram 2500/3500 2010-2012 6.7L

K&N Engineering

$144.99

Unit price
per 

Edelbrock Exhaust Gasket Set: Jeep Grand Cherokee (93-98) / Dodge Ram 1500 / 2500 / 3500 (94-03)
Edelbrock Exhaust Gasket Set: Jeep Grand Cherokee (93-98) / Dodge Ram 1500 / 2500 / 3500 (94-03)
Edelbrock Head Gasket Set: Jeep Grand Cherokee (93-98) / Dodge Ram 1500 / 2500 / 3500 (94-03)
Edelbrock Head Gasket Set: Jeep Grand Cherokee (93-98) / Dodge Ram 1500 / 2500 / 3500 (94-03)
PRW Fabricated Polished Aluminum Valve Covers w/ Mounting Hardware: Fits Most Hemi Models
usa

PRW Fabricated Polished Aluminum Valve Covers w/ Mounting Hardware: Fits most Hemi Models

PRW

Regular price $297.43 $247.86 17% off

Unit price
per 

PRW Fabricated Aluminum Valve Covers (PAIR): Fits Most Hemi Models
usa
PRW Platinum Series Stainless Steel Shaft-Mount Rocker Arms Kit: Fits Most Hemi Models
usa
PRW Fabricated Aluminum Valve Covers (PAIR): Fits Most Chrysler / Dodge / Jeep / Ram 5.7L-6.4L HEMI Engines - Silver
usa
Superchips Flashcal and Amp'd 2.0 Calibration Kit: Ram 1500 (19-22) / Ram 2500 2019
Superchips Flashcal and Amp'd 2.0 Calibration Kit: Ram 1500 (19-22) / Ram 2500 2019

Superchips Flashcal and Amp'd 2.0 Calibration Kit: Ram 1500 (19-22) / Ram 2500 2019

Superchips

Regular price $806.95 $749.95 7% off

Unit price
per 

PRW Steel Black Oxide Rocker Arm Adjuster Screws: Fits Chrysler / Dodge / Jeep / Ram (02-26)
usa
PRW High Performance Sportsman Harmonic Damper: 5.7L Hemi / 6.1L SRT8 / 6.2L Hellcat / 6.4L 392 Engines
usa

PRW Hi-Perf Sportsman Harmonic Damper: Fits Chrysler / Dodge / Jeep / Ram 5.7L-6.4L Hemi

PRW

Regular price $146.52 $122.10 17% off

Unit price
per 

JBA Shorty Headers (Raw Finish): Dodge Dakota (96-03) / Durango (98-03) / Ram (96-01) 5.2L & 5.9L V8
JBA Shorty Headers (Raw Finish): Dodge Dakota (96-03) / Durango (98-03) / Ram (96-01) 5.2L & 5.9L V8
American Brother Designs Custom Coolant Reservoir Cap Cover: Fits Dodge / Jeep / Ram (09-26)
American Brother Designs Custom Coolant Reservoir Cap Cover: Fits Dodge / Jeep / Ram (09-26)
cbp
usa
American Brother Designs Custom Radiator Cap Cover: Jeep Wrangler / Gladiator (2018-2026)
cbp
usa
American Brother Designs Radiator Cap Cover: Jeep Wrangler / Gladiator (2018-2026)
American Brother Designs Radiator Cap Cover: Jeep Wrangler / Gladiator (2018-2026)
usa

American Brother Designs Radiator Cap Cover: Jeep Wrangler (18-25) & Gladiator (20-25)

American Brother Designs

Regular price $109.00 $59.00 46% off

Unit price
per 

American Brother Designs Power Steering Fluid Cap Cover: Chrysler 300 (05-14) / Dodge Challenger / Charger / Magnum (05-14)
American Brother Designs Power Steering Fluid Cap Cover: Chrysler 300 (05-14) / Dodge Challenger / Charger / Magnum (05-14)
usa

American Brother Designs Power Steering Fluid Cap Cover: 300, Challenger, Charger & Magnum 2005 - 2014

American Brother Designs

Regular price $109.00 $59.00 46% off

Unit price
per 

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