2003-2004 Ram 2500/3500 5.9L Cummins Engine & Performance

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2003-2004 5.9L Dodge Ram 2500/3500

2003-2004 Ram 2500/3500 5.9L Cummins Crate Engines

Crate Engines

2003-2004 Ram 2500/3500 5.9L Cummins Gaskets, Gasket Kits & Bearings

Gaskets, Gasket Kits & Bearings

2003-2004 Ram 2500/3500 5.9L Cummins Head Studs & Main Studs

Head Studs & Main Studs

2003-2004 Ram 2500/3500 5.9L Cummins Heads & Valve Train

Heads & Valve Train

2003-2004 Ram 2500/3500 5.9L Cummins Oil Pans

Oil Pans

2003-2004 Ram 2500/3500 5.9L Cummins Radiators & Cooling Upgrades

Radiators & Cooling Upgrades

2003-2004 Ram 2500/3500 5.9L Cummins Rebuild Kits & Internal Parts

Rebuild Kits & Internal Parts

2003-2004 Ram 2500/3500 5.9L Cummins Rods, Pistons, Cams & More

Rods/Pistons/Cams & More

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Fleece FPE-CLNTBYPS-CR-ORING-KIT Replacement O-ring Kit for Cummins Coolant Bypass Kits | 1994-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-CLNTBYPS-CR-ORING-KIT Replacement O-ring Kit for Cummins Coolant Bypass Kits | 1994-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-CLNTBYPS-CR-ORING-KIT Replacement O-ring Kit for Cummins Coolant Bypass Kits | 1994-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Fleece Performance Products

Fleece FPE-CLNTBYPS-CR-ORING-KIT Replacement O-ring Kit for Cummins Coolant Bypass Kits | 1994-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

$9.45
PPE 119020086 Coolant Drain Tube | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 119020086 Coolant Drain Tube | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 119020086 Coolant Drain Tube | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

$26.99
Mahle HS54557 1.28mm Thicker Head Gasket Kit | 2003-2007 RAM 2500/3500 5.9L Cummins
Mahle HS54557 1.28mm Thicker Head Gasket Kit | 2003-2007 RAM 2500/3500 5.9L Cummins

Mahle

Mahle HS54557 1.28mm Thicker Head Gasket Kit | 2003-2007 RAM 2500/3500 5.9L Cummins

$265.31
$573.67
ARP 247-5403 Main Stud Kit | 2004-2007 Dodge RAM 2500/3500 5.9L Cummins
ARP 247-5403 Main Stud Kit | 2004-2007 Dodge RAM 2500/3500 5.9L Cummins

ARP

ARP 247-5403 Main Stud Kit | 2004-2007 Dodge RAM 2500/3500 5.9L Cummins

$252.64
$481.87
Fluidampr 920301 Internal Balance Steel Black Zinc Finish O.D. 9-1/4 In. Performance Damper | 2003-2009 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fluidampr 920301 Internal Balance Steel Black Zinc Finish O.D. 9-1/4 In. Performance Damper | 2003-2009 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Fluidampr

Fluidampr 920301 Internal Balance Steel Black Zinc Finish O.D. 9-1/4 In. Performance Damper | 2003-2009 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

$643.31
Smarty S-06POD Tuner | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MADS
Smarty S-06POD Tuner | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MADS

Smarty

Smarty S-06POD Tuner | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MADS

$685
BD Diesel 1300030 Accelerator Pedal Position Noise Isolator | 1994-2004 RAM 2500/3500 5.9L Cummins
BD Diesel 1300030 Accelerator Pedal Position Noise Isolator | 1994-2004 RAM 2500/3500 5.9L Cummins

BD Diesel

BD Diesel 1300030 Accelerator Pedal Position Noise Isolator | 1994-2004 RAM 2500/3500 5.9L Cummins

$37.95
Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 RAM 2500/3500 5.9L Cummins
Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 RAM 2500/3500 5.9L Cummins
Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 RAM 2500/3500 5.9L Cummins
Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 RAM 2500/3500 5.9L Cummins
Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 RAM 2500/3500 5.9L Cummins

Fleece Performance Products

Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 RAM 2500/3500 5.9L Cummins

$359
aFe 46-52061 BladeRunner Street Series Radiator | 2003-2009 RAM 2500/3500 5.9L Cummins
aFe 46-52061 BladeRunner Street Series Radiator | 2003-2009 RAM 2500/3500 5.9L Cummins
aFe 46-52061 BladeRunner Street Series Radiator | 2003-2009 RAM 2500/3500 5.9L Cummins
aFe 46-52061 BladeRunner Street Series Radiator | 2003-2009 RAM 2500/3500 5.9L Cummins
aFe 46-52061 BladeRunner Street Series Radiator | 2003-2009 RAM 2500/3500 5.9L Cummins

AFE Power

aFe 46-52061 BladeRunner Street Series Radiator | 2003-2009 RAM 2500/3500 5.9L Cummins

$657
PPE 119020092 2 inch OEM Coolant Hose Drain 1/4 inch Bung | Universal
PPE 119020092 2 inch OEM Coolant Hose Drain 1/4 inch Bung | Universal

PPE

PPE 119020092 2 inch OEM Coolant Hose Drain 1/4 inch Bung | Universal

$26.99
Fleece FPE-CLNTBYPS-CUMMINS-MAN-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MT
Fleece FPE-CLNTBYPS-CUMMINS-MAN-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MT
Fleece FPE-CLNTBYPS-CUMMINS-MAN-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MT
Fleece FPE-CLNTBYPS-CUMMINS-MAN-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MT
Fleece FPE-CLNTBYPS-CUMMINS-MAN-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MT

Fleece Performance Products

Fleece FPE-CLNTBYPS-CUMMINS-MAN-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MT

$359
Fleece FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MT
Fleece FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MT

Fleece Performance Products

Fleece FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins MT

$359

2003-2004 5.9L Dodge Ram 2500/3500

Power Lift Shop All

If you're looking to turn your 5.9L Cummins into a beast that can handle anything thrown its way, check out our Engine & Performance upgrades!  When it comes to every aspect of performance, from cooling upgrades to free flow pipes and intakes, we've got your truck covered. From tuners & modules, oil pans, valve covers, and even high-performance crate engines, Alligator Performance is sure to have what you need in order to upgrade your Ram 5.9L Cummins. Whether you're looking to add more power, reliability or durability, we have you covered at Alligator Performance. Pair your new engine upgrades with our selection of top tier Turbo Upgrades! Ram Cummins Fitments: 2003, 2004 Ram 5.9L Cummins. Submodel Fitments: Tradesman, Laramie, Laramie Longhorn, Big Horn, Limited, Lone Star, Power Wagon. Some exceptions apply, please see individual product pages for specific fitments.

Tuners & Modules
Cooling Upgrades
Head Studs & Main Studs
Oil Pans, Valve Covers & Accessories
Crate Engines & Engine Rebuild Kits

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