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5.9L / 6.7L Diesel Engine Upgrades

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674 Results

Flowmaster Super 40 Series Chambered Muffler: Fits most Dodge Ram / Challenger / Charger
Flowmaster Super 40 Series Chambered Muffler: Fits most Dodge Ram / Challenger / Charger
usa

Flowmaster Super 40 Series Chambered Muffler: Fits most Dodge Ram / Challenger / Charger

Flowmaster

Regular price $168.95 $149.95 11% off

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Magnaflow Direct-Fit Catalytic Converter 2002 Dodge Ram 1500 5.9L
Magnaflow Direct-Fit Catalytic Converter 2002 Dodge Ram 1500 5.9L
usa
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

$89.70

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per 

Deatschwerks 1500cc Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2025 (5.7L Hemi, 6.1L SRT8, 6.4L 392)
Deatschwerks 1500cc Fuel Injectors: Chrysler / Dodge / Jeep / Ram 2003 - 2025 (5.7L Hemi, 6.1L SRT8, 6.4L 392)

Deatschwerks 1500cc Fuel Injectors: Fits Most Dodge/Ram (03-23)

Deatschwerks

$1,589.00

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per 

Liqui Moly Molygen New Generation Motor Oil: Fits Most Models
Liqui Moly Molygen New Generation Motor Oil: Fits Most Models
Liqui Moly Super Diesel Additive: Fits Most
Liqui Moly Super Diesel Additive: Fits Most

Liqui Moly Super Diesel Additive: Fits Most

LIQUI MOLY

$215.40

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per 

Kleinn RSRAM71 Remote Start: Fits RAM 1500/2500/3500/4500/5500 2013-2017
Kleinn RSRAM71 Remote Start: Fits RAM 1500/2500/3500/4500/5500 2013-2017
usa

Kleinn RSRAM71 Remote Start: Fits Most Chrysler/Dodge/Jeep/Ram (11-17)

Kleinn Air Horns

Regular price $272.99 $239.99 12% off

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Banks Power Monster-Ram Intake System 3-3/8in Inlet (F&R): RAM 2500/3500 2019-2026 6.7L Cummins Red
Banks Power Monster-Ram Intake System 3-3/8in Inlet (F&R): RAM 2500/3500 2019-2026 6.7L Cummins Red
usa

Banks Power Monster-Ram Intake System 3-3/8in Inlet (F&R): Ram 2500 / 3500 19-24 6.7L Diesel

Banks Power

Regular price $831.11 $748.00 10% off

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Banks Power Monster-Ram Intake System 3-3/8in Inlet (F&R): RAM 2500/3500 2019-2026 6.7L Cummins Black
Banks Power Monster-Ram Intake System 3-3/8in Inlet (F&R): RAM 2500/3500 2019-2026 6.7L Cummins Black
usa

Banks Power Monster-Ram Intake System 3-3/8in Inlet (F&R): Ram 2500 / 3500 19-24 6.7L Diesel

Banks Power

Regular price $831.11 $748.00 10% off

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per 

Banks Power Monster-Ram Intake System (F&R): RAM 2500/3500 2019-2026 6.7L Cummins Raw
Banks Power Monster-Ram Intake System (F&R): RAM 2500/3500 2019-2026 6.7L Cummins Raw
usa

Banks Power Monster-Ram Intake System (F&R): Ram 2500 / 3500 19-24 6.7L Diesel

Banks Power

Regular price $797.78 $718.00 10% off

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Mishimoto Factory-Fit Boot Kit: Ram 2500 / 3500 2019-2023
Mishimoto Factory-Fit Boot Kit: Ram 2500 / 3500 2019-2023

Mishimoto Factory-Fit Boot Kit DuraCore: Ram 2500 / 3500 2019-2024 6.7L Diesel

Mishimoto

Regular price $326.00 $295.95 9% off

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per 

Mishimoto Intercooler Kit: Ram 2500 / Ram 3500 2019-2024 w/ BK Cooler and WBK Pipes
Mishimoto Intercooler Kit: Ram 2500 / Ram 3500 2019-2024 w/ BK Cooler and WBK Pipes

Mishimoto Intercooler Kit WBK Pipes: Ram 2500 / 3500 2019-2024 6.7L Diesel

Mishimoto

Regular price $2,397.00 $2,178.95 9% off

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per 

Mishimoto Intercooler Kit SL Cooler and P Pipes: Ram 2500 / Ram 3500 2019-2024
Mishimoto Intercooler Kit SL Cooler and P Pipes: Ram 2500 / Ram 3500 2019-2024

Mishimoto Intercooler Kit SL Cooler P Pipes: Ram 2500 / 3500 2019-2024 6.7L Diesel

Mishimoto

Regular price $2,397.00 $2,178.95 9% off

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per 

Mishimoto Intercooler Kit: Ram 2500 / Ram 3500 2019-2024
Mishimoto Intercooler Kit: Ram 2500 / Ram 3500 2019-2024

Mishimoto Intercooler Kit 63% Larger Core: Ram 2500 / 3500 2019-2024 6.7L Diesel

Mishimoto

Regular price $2,397.00 $2,178.95 9% off

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per 

Mishimoto Intercooler Kit w/ WBK Pipes: Ram 2500 / Ram 3500 2019-2024
Mishimoto Intercooler Kit w/ WBK Pipes: Ram 2500 / Ram 3500 2019-2024

Mishimoto Intercooler Kit WBK Pipes: Ram 2500 / 3500 2019-2024 6.7L Diesel

Mishimoto

Regular price $2,397.00 $2,178.95 9% off

Unit price
per 

Liqui Moly Top Tec ATF 1200: Fits Most Chrysler / Dodge / Jeep / Ram Models
Liqui Moly Top Tec ATF 1200: Fits Most Chrysler / Dodge / Jeep / Ram Models
Mishimoto Silicone Coolant Hose Kit: Ram Cummins 6.7L 2019+ w/ Red
Mishimoto Silicone Coolant Hose Kit: Ram Cummins 6.7L 2019+ w/ Red

Mishimoto Silicone Coolant Hose Kit: Ram 2500 / 3500 19-24 6.7L Diesel w/ Red

Mishimoto

Regular price $352.00 $319.95 9% off

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per 

Mishimoto Silicone Coolant Hose Kit: Ram Cummins 6.7L 2019+ Black
Mishimoto Silicone Coolant Hose Kit: Ram Cummins 6.7L 2019+ Black

Mishimoto Silicone Coolant Hose Kit: Ram 2500 / 3500 19-24 6.7L Diesel

Mishimoto

Regular price $352.00 $319.95 9% off

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per 

K&N 63 Series Cold Air Intake w/ Closed Box: Ram 2500 & 3500 6.7L Diesel 2019-2024
K&N 63 Series Cold Air Intake w/ Closed Box: Ram 2500 & 3500 6.7L Diesel 2019-2024
K&N 63 Series Cold Air Intake: Ram 2500 & 3500 6.7L Diesel 2019-2024
K&N 63 Series Cold Air Intake: Ram 2500 & 3500 6.7L Diesel 2019-2024

K&N 63 Series Cold Air Intake: Ram 2500 / 3500 19-24 6.7L Diesel

K&N Engineering

$419.99

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Mishimoto Titanium Turbo Blanket: Dodge Ram 2500 / Ram 3500 1996 - 2002
Mishimoto Titanium Turbo Blanket: Dodge Ram 2500 / Ram 3500 1996 - 2002

Mishimoto Titanium Turbo Blanket (HOT SIDE): Dodge Ram 2500 / 3500 1996-2002 5.9L Diesel

Mishimoto

Regular price $191.00 $173.95 9% off

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per 

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

Mishimoto High-Temp Thermostat 190°F: Dodge Ram 2500 / 3500 1994-1998 5.9L Cummins

Mishimoto

Regular price $92.00 $83.95 9% off

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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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