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5.9L / 6.7L Diesel Engine Upgrades

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674 Results

Mishimoto Low-Temperature Thermostat: Dodge Ram 2500 / Ram 3500 1994 - 1998
Mishimoto Low-Temperature Thermostat: Dodge Ram 2500 / Ram 3500 1994 - 1998

Mishimoto Low-Temp Thermostat 174°F: Dodge Ram 2500 / 3500 1994-1998 5.9L Cummins

Mishimoto

Regular price $92.00 $83.95 9% off

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Mishimoto Factory-Fit Boot Kit: Dodge Ram 2500 / Ram 3500 1994 - 2002
Mishimoto Factory-Fit Boot Kit: Dodge Ram 2500 / Ram 3500 1994 - 2002

Mishimoto Factory-Fit Silicone Boot Kit DuraCore: Dodge Ram 2500 / 3500 1994-2002 5.9L

Mishimoto

Regular price $351.00 $318.95 9% off

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K&N 57 Series Cold Air Intake: Dodge Ram 5.9L Diesel 1994-2002
K&N 57 Series Cold Air Intake: Dodge Ram 5.9L Diesel 1994-2002
K&N Drop-In Air Filter: Dodge Ram 5.9L Diesel 1994-2002
K&N Drop-In Air Filter: Dodge Ram 5.9L Diesel 1994-2002
Kooks SS Mopar Flange (BANK): Fits Chrysler / Dodge / Jeep / Ram (05-23)
Kooks SS Mopar Flange (BANK): Fits Chrysler / Dodge / Jeep / Ram (05-23)
usa

Kooks SS Mopar Flange (BANK): Fits Most Chrysler/Dodge/Jeep/Ram (05-16)

Kooks Headers

Regular price $64.08 $57.67 10% off

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K&N 63 Series Cold Air Intake: Ram 2500 & 3500 6.7L Diesel 2013-2018
K&N 63 Series Cold Air Intake: Ram 2500 & 3500 6.7L Diesel 2013-2018

K&N 63 Series Cold Air Intake: Ram 2500 / 3500 13-18 6.7L Diesel

K&N Engineering

$419.99

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Mishimoto Aluminum Degas Tank: Ram 6.7L Cummins (13-18) w/ Micro-Wrinkle Black
Mishimoto Aluminum Degas Tank: Ram 6.7L Cummins (13-18) w/ Micro-Wrinkle Black

Mishimoto Aluminum Degas Tank Black: Ram 2500 / 3500 2013-2018 6.7L Diesel

Mishimoto

Regular price $593.00 $538.95 9% off

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Mishimoto Intercooler Pipe & Boot Kit (F&R): RAM 2500/3500 2013-2018 6.7L Cummins
Mishimoto Intercooler Pipe & Boot Kit (F&R): RAM 2500/3500 2013-2018 6.7L Cummins

Mishimoto Intercooler Pipe & Boot Kit: Ram 2500 / 3500 13-18 6.7L Diesel

Mishimoto

Regular price $537.00 $487.95 9% off

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per 

K&N Engineering Fuel Filter: Ram 2500 / Ram 3500 2013-2018
K&N Engineering Fuel Filter: Ram 2500 / Ram 3500 2013-2018

K&N Engineering Fuel Filter: Ram 2500 / 3500 13-18 6.7L Diesel

K&N Engineering

$62.99

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per 

Mishimoto Silver Intercooler Kit: Ram 2500 / Ram 3500 2013-2018
Mishimoto Silver Intercooler Kit: Ram 2500 / Ram 3500 2013-2018

Mishimoto Silver Intercooler Kit: Ram 2500 / 3500 2013-2018 6.7L Diesel

Mishimoto

Regular price $2,310.00 $2,099.95 9% off

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per 

Mishimoto Black Intercooler Kit: Ram 2500 / Ram 3500 2013-2018
Mishimoto Black Intercooler Kit: Ram 2500 / Ram 3500 2013-2018

Mishimoto Black Intercooler Kit: Ram 2500 / 3500 2013-2018 6.7L Diesel

Mishimoto

Regular price $2,310.00 $2,099.95 9% off

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per 

Mishimoto Silver Intercooler: Ram 2500 / Ram 3500 2013-2018
Mishimoto Silver Intercooler: Ram 2500 / Ram 3500 2013-2018

Mishimoto Silver Intercooler: Ram 2500 / 3500 2013-2018 6.7L Diesel

Mishimoto

Regular price $2,081.00 $1,891.95 9% off

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per 

Mishimoto Black Intercooler: Ram 2500 / Ram 3500 2013-2018
Mishimoto Black Intercooler: Ram 2500 / Ram 3500 2013-2018

Mishimoto Black Intercooler: Ram 2500 / 3500 2013-2018 6.7L Diesel

Mishimoto

Regular price $2,081.00 $1,891.95 9% off

Unit price
per 

Mishimoto Factory-Fit Boot Kit: Multiple Fitments
Mishimoto Factory-Fit Boot Kit: Multiple Fitments

Mishimoto Factory Boot Kit Black: Ram 2500 / 3500 2013-2018 6.7L Diesel

Mishimoto

Regular price $370.00 $335.95 9% off

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K&N Engineering Fuel Filter: Ram 2500 / Ram 3500 2011-2024
K&N Engineering Fuel Filter: Ram 2500 / Ram 3500 2011-2024

K&N Engineering Fuel Filter: Ram 2500 / 3500 11-24 6.7L Diesel

K&N Engineering

$52.99

Unit price
per 

Flowmaster American Thunder Exhaust System: Dodge Ram 3.9L, 5.2L & 5.9L 1994 - 2001 (1500 / 2500 / 3500)
Flowmaster American Thunder Exhaust System: Dodge Ram 3.9L, 5.2L & 5.9L 1994 - 2001 (1500 / 2500 / 3500)
usa
DiabloSport 9050 - Trinity T2 MX Vehicle Monitor
DiabloSport 9050 - Trinity T2 MX Vehicle Monitor

DiabloSport 9050 - Trinity T2 MX Vehicle Monitor

Diablo Sport

Regular price $771.95 $726.95 6% off

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per 

Westin Black Sensor Relocator (FRONT): Fits Dodge / Ram / Durango (09-24)
Westin Black Sensor Relocator (FRONT): Fits Dodge / Ram / Durango (09-24)

Westin Black Sensor Relocator (FRONT): Fits Most Dodge/Ram (09-24)

Westin

Regular price $135.00 $107.99 20% off

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per 

MBRP Aluminum Single Side Exit Filter Back Exhaust: Dodge Ram 2500 / Ram 3500 2007-2012
MBRP Aluminum Single Side Exit Filter Back Exhaust: Dodge Ram 2500 / Ram 3500 2007-2012

MBRP Aluminum Single Side Exit Filter Back Exhaust: Ram 2500 / 3500 11-12 6.7L Diesel/5.7L

MBRP

Regular price $531.16 $429.99 19% off

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per 

Go Rhino OE Xtreme Cab Length Side Step Brackets: Fits Dodge / Ram (02-26)
Go Rhino OE Xtreme Cab Length Side Step Brackets: Fits Dodge / Ram (02-26)
usa

Go Rhino OE Xtreme Cab Length Side Step Brackets: Fits Most Dodge/Ram (09-25)

Go Rhino

Regular price $201.49 $154.99 23% off

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Go Rhino OE Xtreme Cab Length Side Step Brackets: Fits Most Dodge Ram Models (2002-2010)
Go Rhino OE Xtreme Cab Length Side Step Brackets: Fits Most Dodge Ram Models (2002-2010)
usa

Go Rhino OE Xtreme Cab Length Side Step Brackets: Fits Most Dodge (02-09)

Go Rhino

Regular price $201.49 $154.99 23% off

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Banks Power Boost Tube Upgrade Kit 3.5in Raw (F&R): 13-18 RAM 2500/3500 6.7L Cummins
Banks Power Boost Tube Upgrade Kit 3.5in Raw (F&R): 13-18 RAM 2500/3500 6.7L Cummins
usa

Banks Power Boost Tube Upgrade Kit 3.5in Raw (F&R): Ram 2500 / 3500 13-18 6.7L Diesel

Banks Power

Regular price $487.78 $439.00 10% off

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Deatschwerks 1250cc Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2025 (5.7L Hemi, 6.1L SRT8, 6.4L 392)

Deatschwerks 1250cc Fuel Injectors: Fits Most Dodge/Ram (03-17)

Deatschwerks

$1,049.00

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per 

Deatschwerks 1200cc Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2025 (5.7L Hemi, 6.1L SRT8, 6.4L 392)
Deatschwerks 1200cc Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2025 (5.7L Hemi, 6.1L SRT8, 6.4L 392)

Deatschwerks 1200cc Fuel Injectors: Fits Most Dodge/Ram (03-23)

Deatschwerks

$1,049.00

Unit price
per 

Magnaflow Universal Catalytic Converter 2.5in In/Out - Stainless Steel
Magnaflow Universal Catalytic Converter 2.5in In/Out - Stainless Steel
usa
Odyssey Battery HD Extreme AGM Battery: Fits Jeep / Dodge / Ram (99-11)
Odyssey Battery HD Extreme AGM Battery: Fits Jeep / Dodge / Ram (99-11)
usa

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

Odyssey Battery

Regular price $488.12 $436.99 10% off

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Liqui Moly Pro-Line Engine Flush: Fits Most Models
Liqui Moly Pro-Line Engine Flush: Fits Most Models

Liqui Moly Pro-Line Engine Flush: Fits Most Models

LIQUI MOLY

$185.70

Unit price
per 

Liqui Moly Top Tec 6600 Motor Oil: Fits Most Models
Liqui Moly Top Tec 6600 Motor Oil: Fits Most Models

Liqui Moly Top Tec 6600 Motor Oil: Fits Most Models

LIQUI MOLY

$270.95

Unit price
per 

Superchips Amp'd 2.0 Wireless Pedal Controller: Ram 1500 (14-21) / 2500 (05-24) / 3500 (05-20)

Superchips Amp'd 2.0 Wireless Pedal Controller: Ram 1500 (14-21) / 2500 (05-24) / 3500 (05-20)

Superchips

Regular price $322.95 $299.95 7% off

Unit price
per 

Banks Power Boost Tube Upgrade Kit 3.5in Red (F&R): 13-18 RAM 2500/3500 6.7L Cummins
Banks Power Boost Tube Upgrade Kit 3.5in Red (F&R): 13-18 RAM 2500/3500 6.7L Cummins
usa

Banks Power Boost Tube Upgrade Kit 3.5in Red (F&R): Ram 2500 / 3500 13-18 6.7L Diesel

Banks Power

Regular price $510.00 $459.00 10% 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.

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