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RAM, (2003-2004), 5.9L Cummins, Cooling System

Shop Cooling System by Category

Mishimoto MMRA-LC-EG-YW Pre-Mixed Liquid Chill Coolant (Yellow)

Mishimoto MMRA-LC-EG-PR Pre-Mixed Liquid Chill Coolant (Purple)

Mishimoto MMRA-LC-FULLF Liquid Chill Synthetic Coolant

Mishimoto Pre-Mixed Liquid Chill Synthetic Coolant

Coolant 10

Coolant Tanks 0

Fleece Performance Engineering FPE-CLNTBYPS-CUMMINS-SER-KIT Coolant Bypass Service Kit (1994-2024 5.9/6.7L Cummins)

XDP XD1007 Engine Coolant Temperature (ECT) Sensor (1998.5-2021 Cummins)

XDP XD688 Thermostat Housing Bolt Kit (Black-Phosphate) (1998.5-2018 Cummins)

XDP XD685 Water Pump Bolt Kit (Black-Phosphate) (1999-2018 Cummins)

XDP XD672 XTRA Cool Water Pump (1989-2012 Cummins)

Parts 27

Pumps 0

XDP XD296 Xtra Cool Direct-Fit Replacement Radiator (2003-2009 Cummins)

Mishimoto MMB-RAM-002 Radiator, Trans Cooler, & Intercooler Heavy-Duty Bundle (2003-2007 5.9L Cummins)

Mishimoto MMB-RAM-001 Radiator & Transmission Cooler Essentials Bundle (2003-2009 5.9/6.7L Cummins)

Mishimoto MMRAD-RAM-03 Aluminum Performance Radiator (2003-2009 5.9/6.7L Cummins)

Mishimoto R2711-MT Replacement Radiator (2003-2009 Cummins)

Radiator 6

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RAM, (2003-2004), 5.9L Cummins, Cooling System

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BD Diesel (1)

CSF (2)

Fleece Performance Engineering (9)

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Mishimoto Performance Parts (14)

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BD Diesel (1) CSF (2) Fleece Performance Engineering (9) Hot Shot's Secret (3) Lucas Oil (1) Mahle (3) Mishimoto Performance Parts (14) S&B (1) Wehrli Custom Fabrication (2) XDP MFG (5)

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41 products

Lucas Oil

Lucas Oil 10640 Super Coolant

Sale price$12.99

Hot Shot's Secret

Hot Shot's Secret 150K Mile Extended Life Green Coolant (1 Gal)

Sale price$16.99

Hot Shot's Secret

Hot Shot's Secret 150,000 Mile Heavy Duty Extended Life Yellow (1 Gal)

Sale price$16.99

Hot Shot's Secret

Hot Shot's Secret 750,000 Mile Heavy Duty Ultra Long Life Red (1 Gal)

Sale price$19.99

Fleece FPE - CUMM - CYL - M22 - PG M22 Thermostat Plug for Cummins Cylinder heads (2003 - 2018 Cummins) - Southern Diesel Supply

Fleece Performance Engineering

Fleece Performance Engineering FPE-CUMM-CYL-M22-PG M22 Thermostat Plug for Cylinder heads (2003-2018 5.9/6.7L Cummins)

Sale price$16.99

Fleece FPE - CUMM - LHCL - 0312 Lower Heater Return Hose (2003 - 2012 Cummins) - Southern Diesel Supply

Fleece Performance Engineering

Fleece Performance Engineering FPE-CUMM-LHCL-0312 Lower Heater Return Hose (2003-2012 5.9/6.7L Cummins)

Sale price$41.99

Fleece FPE - CUMM - HCL - KIT - 0312 Heater Feed and Return Hose Kit (2003 - 2012 Cummins) - Southern Diesel Supply

Fleece Performance Engineering

Fleece Performance Engineering FPE-CUMM-HCL-KIT-0312 Heater Feed and Return Hose Kit (2003-2012 5.9/6.7L Cummins)

Sale price$104.99

Fleece FPE - CLNT - HS - BRKT Coolant Bypass Hose Brackets (2003 - 2018 Cummins) - Southern Diesel Supply

Fleece Performance Engineering

Fleece Performance Engineering FPE-CLNT-HS-BRKT Coolant Bypass Hose Brackets (2003-2018 5.9/6.7L Cummins)

Sale price$73.99

Fleece FPE - CLNTBYPS - HS - CRVP 34.5 Inch Common Rail/VP44 Cummins Coolant Bypass Hose (1998.5 - 2018 Cummins) - Southern Diesel Supply

Fleece Performance Engineering

Fleece Performance Engineering FPE-CLNTBYPS-HS-CRVP 34.5 Inch Common Rail/VP44 Coolant Bypass Hose (1998.5-2018 5.9/6.7L Cummins)

Sale price$79.99

Fleece Performance Engineering

Fleece Performance Engineering FPE-34658-BLK-SPK Upper Fan Idler for use with Electric Water Pumps (2003-2018 5.9/6.7L Cummins)

Sale price$119.99

Fleece FPE - CLNTBYPS - CR - ORING - KIT Replacement O - ring Kit for Cummins Coolant Bypass Kits (1994 - 2018 Cummins) - Southern Diesel Supply

Fleece Performance Engineering

Fleece Performance Engineering FPE-CLNTBYPS-CR-ORING-KIT Replacement O-ring Kit Coolant Bypass Kits (1994-2018 5.9/6.7L Cummins)

Sale price$9.99

Fleece FPE - CUMM - HCL - 0324 Heater Core Replacement Hose and Fitting (2003 - 2024 Cummins) - Southern Diesel Supply

Fleece Performance Engineering

Fleece Performance Engineering FPE-CUMM-HCL-0324 Heater Core Replacement Hose and Fitting (2003-2024 5.9/6.7L Cummins)

Sale price$73.99

CSF 10583 AC Condenser (2003 - 2007 Cummins) - For Charge Air Cooler w/ Plastic Tanks - Southern Diesel Supply

CSF

CSF 10583 AC Condenser (2003-2007 5.9L Cummins) - For Charge Air Cooler w/ Plastic Tanks

Sale price$104.99

CSF 3710 OEM Style Replacement Radiator (2003 - 2009 Cummins) - Southern Diesel Supply

CSF

CSF 3710 OEM Style Replacement Radiator (2003-2009 5.9/6.7L Cummins)

Sale price$200.99

BD Diesel

BD Diesel 1040023 Killer Frost Plug Plate (2003-2018 Cummins)

Sale price$70.99

WCFab WCF100678 Cummins Upper Coolant Pipe - Southern Diesel Supply

Wehrli Custom Fabrication

WCFab WCF100678 Cummins Upper Coolant Pipe

Sale price$156.99

WCFab WCF100157 Cummins Thermostat Housing - Southern Diesel Supply

Wehrli Custom Fabrication

WCFab WCF100157 Cummins Thermostat Housing

Sale price$179.99

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At Southern Diesel Supply, we are passionate about power, performance, and precision. Specializing in premium accessories for RAM, Chevrolet, GMC, and Ford, we provide truck owners with the best upgrades to enhance durability, style, and functionality.