HEMI EXPERTS OF 20 YEARS

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5.9L / 6.7L Diesel Engine Upgrades

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674 Results

Odyssey Battery HD Perf AGM Battery: Fits Dodge / Jeep / Ram (99-11)
Odyssey Battery HD Perf AGM Battery: Fits Dodge / Jeep / Ram (99-11)
usa

Odyssey Battery HD Perf AGM Battery: Fits Most Dodge/Jeep (99-10)

Odyssey Battery

Regular price $427.76 $377.99 12% off

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Go Rhino RC2 Mounting Brackets: Fits Most Dodge Ram Models (2002-2010)
Go Rhino RC2 Mounting Brackets: Fits Most Dodge Ram Models (2002-2010)
usa

Go Rhino RC2 Mounting Brackets: Fits Most Dodge 5.9L Diesel/5.7L/3.9L/3.7L (02-05)

Go Rhino

Regular price $81.89 $62.99 23% off

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Go Rhino HD Mounting Brackets for RB Running Boards: Fits Dodge / Ram (02-26)
Go Rhino HD Mounting Brackets for RB Running Boards: Fits Dodge / Ram (02-26)
usa

Go Rhino HD Mounting Brackets for RB Running Boards: Fits Most Dodge/Ram (09-25)

Go Rhino

Regular price $201.49 $154.99 23% off

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Go Rhino Dominator Extreme Mounting Brackets: Fits Ram 1500 / 2500 / 3500 (02-26)
Go Rhino Dominator Extreme Mounting Brackets: Fits Ram 1500 / 2500 / 3500 (02-26)
usa

Go Rhino Dominator Extreme Mounting Brackets: Fits Most Dodge/Ram (09-25)

Go Rhino

Regular price $201.49 $154.99 23% off

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Magnaflow BR Exhaust Kit: Fits Dodge Ram (94-10)
Magnaflow BR Exhaust Kit: Fits Dodge Ram (94-10)
usa

Magnaflow BR Exhaust Kit: Dodge Ram 04-06 8.3L SRT10

Magnaflow

$246.00

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Snow Performance Stage 2 Boost Cooler Water Injection Kit: Fits most 6.7L Cummins
Snow Performance Stage 2 Boost Cooler Water Injection Kit: Fits most 6.7L Cummins

Snow Performance Stage 2 Boost Cooler Water Injection Kit: Fits Most Dodge/Ram 6.7L Diesel/5.9L Diesel (07-17)

Snow Performance

Regular price $1,312.51 $937.51 29% off

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per 

Snow Performance Stage 2 Boost Cooler Water Injection Kit: Fits most 5.9L Cummins
Snow Performance Stage 2 Boost Cooler Water Injection Kit: Fits most 5.9L Cummins

Snow Performance Stage 2 Boost Cooler Water Injection Kit: Dodge Ram 2500 / Ram 3500 94-07 5.9L Diesel

Snow Performance

Regular price $1,312.51 $937.51 29% off

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per 

Snow Performance Stage 3 Boost Cooler Water Injection Kit: Fits most 6.7L Cummins
Snow Performance Stage 3 Boost Cooler Water Injection Kit: Fits most 6.7L Cummins

Snow Performance Stage 3 Boost Cooler Water Injection Kit: Fits Most Dodge/Ram 6.7L Diesel/5.9L Diesel (07-17)

Snow Performance

Regular price $1,750.02 $1,250.02 29% off

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Snow Performance Stage 3 Boost Cooler Water Injection Kit: Dodge Ram 2500 (94-09) / Ram 3500 (94-07)
Snow Performance Stage 3 Boost Cooler Water Injection Kit: Dodge Ram 2500 (94-09) / Ram 3500 (94-07)

Snow Performance Stage 3 Boost Cooler Water Injection Kit: Dodge Ram 2500 / Ram 3500 94-07 5.9L Diesel

Snow Performance

Regular price $1,750.02 $1,250.02 29% off

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per 

Snow Performance Stage 2 Boost Cooler Water Injection Kit: Dodge Ram 2500 (94-09) / Ram 3500 (94-07)
Snow Performance Stage 2 Boost Cooler Water Injection Kit: Dodge Ram 2500 (94-09) / Ram 3500 (94-07)

Snow Performance Stage 2 Boost Cooler Water Injection Kit: Dodge Ram 2500 / Ram 3500 94-09 5.9L Diesel

Snow Performance

Regular price $1,166.68 $833.34 29% off

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Snow Performance Stage 2 Boost Cooler Water Injection Kit: Fits Dodge Ram 2500 / 3500 (07-20)
Snow Performance Stage 2 Boost Cooler Water Injection Kit: Fits Dodge Ram 2500 / 3500 (07-20)

Snow Performance Stage 2 Boost Cooler Water Injection Kit: Fits Most Dodge/Ram 6.7L Diesel/5.9L Diesel (07-17)

Snow Performance

Regular price $1,166.68 $833.34 29% off

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per 

Snow Performance Stage 3 Boost Cooler Water Injection Kit: Dodge Ram 2500 (94-09) / Ram 3500 (94-07)
Snow Performance Stage 3 Boost Cooler Water Injection Kit: Dodge Ram 2500 (94-09) / Ram 3500 (94-07)

Snow Performance Stage 3 Boost Cooler Water Injection Kit: Dodge Ram 2500 / Ram 3500 94-07 5.9L Diesel

Snow Performance

Regular price $1,458.35 $1,041.68 29% off

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Snow Performance Stage 3 Boost Cooler Water Injection Kit: Fits Dodge Ram 2500 / 3500 (07-20)
Snow Performance Stage 3 Boost Cooler Water Injection Kit: Fits Dodge Ram 2500 / 3500 (07-20)

Snow Performance Stage 3 Boost Cooler Water Injection Kit: Fits Most Dodge/Ram 6.7L Diesel/5.9L Diesel (07-17)

Snow Performance

Regular price $1,458.35 $1,041.68 29% off

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Westin Black Running Board Mount Kit: Fits Ram 1500 / 1500 Classic / 2500 / 3500 (03-24)
Westin Black Running Board Mount Kit: Fits Ram 1500 / 1500 Classic / 2500 / 3500 (03-24)
Wehrli 3.5in Intercooler Pipes Kit: Ram 2500 / Ram 3500 2013-2018 w/ WCFab Red
Wehrli 3.5in Intercooler Pipes Kit: Ram 2500 / Ram 3500 2013-2018 w/ WCFab Red
usa

Wehrli 3.5in Intercooler Pipes Kit: Ram 2500 / 3500 13-18 6.7L Diesel w/ WCFab Red

Wehrli

Regular price $619.00 $600.43 3% off

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SPC Performance Hex Tie Rod Adjuster: Ram 3500 (13-23) / 2500 (14-23)
SPC Performance Hex Tie Rod Adjuster: Ram 3500 (13-23) / 2500 (14-23)
usa

SPC Performance Hex Tie Rod Adjuster: Ram 2500 / 3500 13-23

SPC Performance

$72.42

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per 

SPC Performance Hex Tie Rod Adjuster: Ram 3500 (13-24) / Ram 2500 (14-24)
SPC Performance Hex Tie Rod Adjuster: Ram 3500 (13-24) / Ram 2500 (14-24)
usa

SPC Performance Hex Tie Rod Adjuster: Ram 2500 / 3500 13-25

SPC Performance

$72.42

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per 

Smarty ComMod: Fits Most Dodge Ram Models

Smarty ComMod: Fits Most Dodge Ram Models

Smarty

$209.00

Unit price
per 

Smarty Tuner: Fits Most Dodge Ram Models
Smarty Tuner: Fits Most Dodge Ram Models

Smarty Tuner: Fits Most Dodge Ram Models

Smarty

$495.00

Unit price
per 

Smarty S-67 Tuner: Fits Most Dodge Ram Models

Smarty S-67 Tuner: Fits Most Dodge Ram Models

Smarty

$685.00

Unit price
per 

Mishimoto Intercooler: Dodge Ram 3500 (2009-2010) / Ram 2500 / Ram 3500 (2011-2012)
Mishimoto Intercooler: Dodge Ram 3500 (2009-2010) / Ram 2500 / Ram 3500 (2011-2012)

Mishimoto Intercooler Silver: Dodge Ram 2500 / 3500 2010-2012 6.7L Diesel

Mishimoto

Regular price $1,540.00 $1,399.95 9% off

Unit price
per 

Mishimoto Intercooler Kit: Dodge Ram 3500 (2009-2010) / Ram 2500 (2010-2012) / Ram 3500 (2011-2012)
Mishimoto Intercooler Kit: Dodge Ram 3500 (2009-2010) / Ram 2500 (2010-2012) / Ram 3500 (2011-2012)

Mishimoto Intercooler Kit Silver: Dodge Ram 2500 / 3500 2010-2012 6.7L Diesel

Mishimoto

Regular price $1,976.00 $1,795.95 9% off

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Mishimoto Black Intercooler Kit: Dodge Ram 3500 (2009-2010) / Ram 2500 / Ram 3500 (2011-2012)
Mishimoto Black Intercooler Kit: Dodge Ram 3500 (2009-2010) / Ram 2500 / Ram 3500 (2011-2012)

Mishimoto Intercooler Kit Black: Dodge Ram 2500 / 3500 2010-2012 6.7L Diesel

Mishimoto

Regular price $1,976.00 $1,795.95 9% off

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Mishimoto Exhaust Manifold Stud Kit: Dodge Ram 2500 (94-10) / Ram 3500 (94-18)
Mishimoto Exhaust Manifold Stud Kit: Dodge Ram 2500 (94-10) / Ram 3500 (94-18)

Mishimoto Exhaust Manifold Stud Kit: Dodge Ram 1994-2018 5.9L/6.7L Cummins Diesel

Mishimoto

Regular price $130.00 $117.95 9% off

Unit price
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K&N Engineering Fuel Filter: Dodge Ram 2500 / Ram 3500 2000-2009
K&N Engineering Fuel Filter: Dodge Ram 2500 / Ram 3500 2000-2009

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.

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