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

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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$27,799.99
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Mahle HS54556 1.20MM Head Gasket Set | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Mahle HS54556 1.20MM Head Gasket Set | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Mahle

Mahle HS54556 1.20MM Head Gasket Set | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: MCIHS54556
$235.02
Hamilton Cams 07-S-003 Hamilton Cams Valve Springs | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-S-003 Hamilton Cams Valve Springs | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-S-003 Hamilton Cams Valve Springs | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Hamilton Cams

Hamilton Cams 07-S-003 Hamilton Cams Valve Springs | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: HAM07-S-003
$349
Fluidampr 300008 Full Power Kit | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fluidampr 300008 Full Power Kit | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Fluidampr

Fluidampr 300008 Full Power Kit | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: FLU300008
$230.62
Edge 98617 EAS Competition Kit | Universal
Edge 98617 EAS Competition Kit | Universal
Edge 98617 EAS Competition Kit | Universal

Edge Products

Edge 98617 EAS Competition Kit | Universal

SKU: EDG98617
$562.95
Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins

Fleece Performance Products

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

SKU: FLCFPE-CLNTBYPS-CUMMINS-0305
$359
Mahle VS50419 Rocker Box Gasket | 2003-2018 Dodge RAM 2500/3500 Cummins
Mahle VS50419 Rocker Box Gasket | 2003-2018 Dodge RAM 2500/3500 Cummins

Mahle

Mahle VS50419 Rocker Box Gasket | 2003-2018 Dodge RAM 2500/3500 Cummins

SKU: MCIVS50419
$15.97
Fleece FPE-OC-CR-F Cummins Billet Oil Cap Cover Black | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-OC-CR-F Cummins Billet Oil Cap Cover Black | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-OC-CR-F Cummins Billet Oil Cap Cover Black | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Fleece Performance Products

Fleece FPE-OC-CR-F Cummins Billet Oil Cap Cover Black | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: FLCFPE-OC-CR-F
$34.99
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

SKU: FLCFPE-CLNTBYPS-CUMMINS-MAN
$359
Fleece FPE-CLNT-HS-BRKT Coolant Bypass Hose Brackets | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-CLNT-HS-BRKT Coolant Bypass Hose Brackets | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-CLNT-HS-BRKT Coolant Bypass Hose Brackets | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-CLNT-HS-BRKT Coolant Bypass Hose Brackets | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-CLNT-HS-BRKT Coolant Bypass Hose Brackets | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Fleece Performance Products

Fleece FPE-CLNT-HS-BRKT Coolant Bypass Hose Brackets | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: FLCFPE-CLNT-HS-BRKT
$69.99
Hamilton Cams 07-C-178/208 Cams Stage 1 Towing Camshaft | 1989-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Hamilton Cams 07-C-178/208 Cams Stage 1 Towing Camshaft | 1989-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Hamilton Cams 07-C-178/208 Cams Stage 1 Towing Camshaft | 1989-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Hamilton Cams

Hamilton Cams 07-C-178/208 Cams Stage 1 Towing Camshaft | 1989-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: HAM07-C-178/208
$649
Hamilton Cams 07-CC-24V178 Towing Camshaft Combo | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-CC-24V178 Towing Camshaft Combo | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-CC-24V178 Towing Camshaft Combo | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Hamilton Cams

Hamilton Cams 07-CC-24V178 Towing Camshaft Combo | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: HAM07-CC-24V178
$1,349
Edge 98608 EAS Temperature Sensor | Universal
Edge 98608 EAS Temperature Sensor | Universal
Edge 98608 EAS Temperature Sensor | Universal

Edge Products

Edge 98608 EAS Temperature Sensor | Universal

SKU: EDG98608
$77.65
Edge 85400-300 Evolution CTS3 | 2003-2012 Dodge RAM 5.9L/6.7L Cummins
Edge 85400-300 Evolution CTS3 | 2003-2012 Dodge RAM 5.9L/6.7L Cummins

Edge Products

Edge 85400-300 Evolution CTS3 | 2003-2012 Dodge RAM 5.9L/6.7L Cummins

SKU: EDG85400-300
$749.95
Wehrli 100678 Upper Coolant Pipe | 2003-2009 Dodge Ram 2500/3500 5.9L Cummins
Wehrli 100678 Upper Coolant Pipe | 2003-2009 Dodge Ram 2500/3500 5.9L Cummins
Wehrli 100678 Upper Coolant Pipe | 2003-2009 Dodge Ram 2500/3500 5.9L Cummins
Wehrli 100678 Upper Coolant Pipe | 2003-2009 Dodge Ram 2500/3500 5.9L Cummins
Wehrli 100678 Upper Coolant Pipe | 2003-2009 Dodge Ram 2500/3500 5.9L Cummins

Wehrli Custom Fab

Wehrli 100678 Upper Coolant Pipe | 2003-2009 Dodge Ram 2500/3500 5.9L Cummins

SKU: WCF100678-GB
From $155.20
Fleece FPE-61-10005 Freedom Series Cylinder Head Street | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-61-10005 Freedom Series Cylinder Head Street | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-61-10005 Freedom Series Cylinder Head Street | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-61-10005 Freedom Series Cylinder Head Street | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Fleece Performance Products

Fleece FPE-61-10005 Freedom Series Cylinder Head Street | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: FLCFPE-61-10005
$2,199
$2,299
Mahle CB-1873AP Standard Size Rod Bearing | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Mahle CB-1873AP Standard Size Rod Bearing | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Mahle

Mahle CB-1873AP Standard Size Rod Bearing | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: MCICB-1873AP
$14.27
Gator Fasteners HSK5967C-CS Competition 625 Series Head Stud Kit | 1998.5-2024 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Gator Fasteners HSK5967C-CS Competition 625 Series Head Stud Kit | 1998.5-2024 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Gator Fasteners HSK5967C-CS Competition 625 Series Head Stud Kit | 1998.5-2024 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Gator Fasteners HSK5967C-CS Competition 625 Series Head Stud Kit | 1998.5-2024 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Gator Fasteners HSK5967C-CS Competition 625 Series Head Stud Kit | 1998.5-2024 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Gator Fasteners

Gator Fasteners HSK5967C-CS Competition 625 Series Head Stud Kit | 1998.5-2024 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: GTFHSK5967C-CS
$1,289.99
Fluidampr 300002 Drill Pin Kit | 1992-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fluidampr 300002 Drill Pin Kit | 1992-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fluidampr 300002 Drill Pin Kit | 1992-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Fluidampr

Fluidampr 300002 Drill Pin Kit | 1992-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: FLU300002
$68.49
Edge 85300 Evolution CS2 | GM/Ford/Dodge Applications
Edge 85300 Evolution CS2 | GM/Ford/Dodge Applications
Edge 85300 Evolution CS2 | GM/Ford/Dodge Applications
Edge 85300 Evolution CS2 | GM/Ford/Dodge Applications
Edge 85300 Evolution CS2 | GM/Ford/Dodge Applications

Edge Products

Edge 85300 Evolution CS2 | GM/Ford/Dodge Applications

SKU: EDG85300
$511.95
Mahle CS54556 Lower Engine Gakset Set | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Mahle CS54556 Lower Engine Gakset Set | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Mahle

Mahle CS54556 Lower Engine Gakset Set | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: MCICS54556
$186.37
Industrial 24FC10 Smooth Billet Idler Pulley | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Industrial 24FC10 Smooth Billet Idler Pulley | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Industrial 24FC10 Smooth Billet Idler Pulley | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Industrial 24FC10 Smooth Billet Idler Pulley | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Industrial Injection

Industrial 24FC10 Smooth Billet Idler Pulley | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: IIS24FC10
$98.89
Hamilton Cams 07-B-001 Forged 24v bridges | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-B-001 Forged 24v bridges | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-B-001 Forged 24v bridges | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-B-001 Forged 24v bridges | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Hamilton Cams

Hamilton Cams 07-B-001 Forged 24v bridges | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: HAM07-B-001
$149
Hamilton Cams 07-P-004 24 Valve Extreme Duty Pushrods 12mm | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-P-004 24 Valve Extreme Duty Pushrods 12mm | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Hamilton Cams

Hamilton Cams 07-P-004 24 Valve Extreme Duty Pushrods 12mm | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: HAM07-P-004
$199
HP Tuners M04-000-00 Computer Programmers | Universal
HP Tuners M04-000-00 Computer Programmers | Universal
HP Tuners M04-000-00 Computer Programmers | Universal
HP Tuners M04-000-00 Computer Programmers | Universal
HP Tuners M04-000-00 Computer Programmers | Universal
HP Tuners M04-000-00 Computer Programmers | Universal

HP Tuners

HP Tuners M04-000-00 Computer Programmers | Universal

SKU: HPTM04-000-00
$399.99

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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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