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

BD Diesel

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

SKU: BDD1300030
$37.95
$40
SAVE $2.05
PPE 214052001 Hardended Stainless Steel Oil Drain Plug | 2003-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
IN STOCK
PPE 214052001 Hardended Stainless Steel Oil Drain Plug | 2003-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
PPE 214052001 Hardended Stainless Steel Oil Drain Plug | 2003-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

PPE

PPE 214052001 Hardended Stainless Steel Oil Drain Plug | 2003-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: PPE214052001
$22.49
Hamilton Cams 07-S-003 Hamilton Cams Valve Springs | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
IN STOCK
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
aFe 46-52061 BladeRunner Street Series Radiator | 2003-2009 Dodge RAM 2500/3500 5.9L Cummins
IN STOCK
aFe 46-52061 BladeRunner Street Series Radiator | 2003-2009 Dodge RAM 2500/3500 5.9L Cummins
aFe 46-52061 BladeRunner Street Series Radiator | 2003-2009 Dodge RAM 2500/3500 5.9L Cummins
aFe 46-52061 BladeRunner Street Series Radiator | 2003-2009 Dodge RAM 2500/3500 5.9L Cummins
aFe 46-52061 BladeRunner Street Series Radiator | 2003-2009 Dodge RAM 2500/3500 5.9L Cummins

AFE Power

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

SKU: AFE46-52061
$704
$880
SAVE $176
PPE 119020092 2" inch OEM Coolant Hose Drain 1/4 inch Bung | Universal
IN STOCK
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

SKU: PPE119020092
$26.99
$29.99
SAVE $3
Mahle VS50419 Rocker Box Gasket | 2003-2018 Dodge RAM 2500/3500 Cummins
IN STOCK
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-CLNT-HS-BRKT Coolant Bypass Hose Brackets | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
IN STOCK
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
Edge 98617 EAS Competition Kit | Universal
IN STOCK
Edge 98617 EAS Competition Kit | Universal
Edge 98617 EAS Competition Kit | Universal

Edge Products

Edge 98617 EAS Competition Kit | Universal

SKU: EDG98617
$584.95
$658.95
SAVE $74
Fleece FPE-CLNTBYPS-CUMMINS-0305 Coolant Bypass Kit | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins
IN STOCK
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
$379
$397.95
SAVE $18.95
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-P-004 24 Valve Extreme Duty Pushrods 12mm | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
IN STOCK
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
IN STOCK
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
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
Fleece FPE-BRAB-C1 Performance Billet Rocker Arm Bridges (Set of 12) | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
IN STOCK
Fleece FPE-BRAB-C1 Performance Billet Rocker Arm Bridges (Set of 12) | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-BRAB-C1 Performance Billet Rocker Arm Bridges (Set of 12) | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-BRAB-C1 Performance Billet Rocker Arm Bridges (Set of 12) | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-BRAB-C1 Performance Billet Rocker Arm Bridges (Set of 12) | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Fleece Performance Products

Fleece FPE-BRAB-C1 Performance Billet Rocker Arm Bridges (Set of 12) | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: FLCFPE-BRAB-C1
$467.43
Edge 98608 EAS Temperature Sensor | Universal
IN STOCK
Edge 98608 EAS Temperature Sensor | Universal
Edge 98608 EAS Temperature Sensor | Universal

Edge Products

Edge 98608 EAS Temperature Sensor | Universal

SKU: EDG98608
$80.75
$90.95
SAVE $10.20
Edge 85400-300 Evolution CTS3 | 2003-2012 Dodge RAM 5.9L/6.7L Cummins
IN STOCK
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
$799.95
$899.95
SAVE $100
Fleece FPE-OC-CR-F Cummins Billet Oil Cap Cover Black | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
IN STOCK
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
IN STOCK
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
$379
Fleece FPE-CUMM-HCL-KIT-0312 Heater Feed and Return Hose Kit | 2003-2012 RAM 2500/3500 6.7L Cummins
IN STOCK
Fleece FPE-CUMM-HCL-KIT-0312 Heater Feed and Return Hose Kit | 2003-2012 RAM 2500/3500 6.7L Cummins
Fleece FPE-CUMM-HCL-KIT-0312 Heater Feed and Return Hose Kit | 2003-2012 RAM 2500/3500 6.7L Cummins

Fleece Performance Products

Fleece FPE-CUMM-HCL-KIT-0312 Heater Feed and Return Hose Kit | 2003-2012 RAM 2500/3500 6.7L Cummins

SKU: FLCFPE-CUMM-HCL-KIT-0312
$99.99
$104.99
SAVE $5
Mishimoto MMRAD-RAM-03 Aluminum Radiator | 2003-2009 Dodge RAM 2500/3500 Cummins
IN STOCK
Mishimoto MMRAD-RAM-03 Aluminum Radiator | 2003-2009 Dodge RAM 2500/3500 Cummins
Mishimoto MMRAD-RAM-03 Aluminum Radiator | 2003-2009 Dodge RAM 2500/3500 Cummins
Mishimoto MMRAD-RAM-03 Aluminum Radiator | 2003-2009 Dodge RAM 2500/3500 Cummins
Mishimoto MMRAD-RAM-03 Aluminum Radiator | 2003-2009 Dodge RAM 2500/3500 Cummins

Mishimoto

Mishimoto MMRAD-RAM-03 Aluminum Radiator | 2003-2009 Dodge RAM 2500/3500 Cummins

SKU: MIMMMRAD-RAM-03
$959.95
$1,056
SAVE $96.05
Hamilton Cams 07-C-178/208 Cams Stage 1 Towing Camshaft | 1989-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
IN STOCK
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-C-188/220 188/220 Cam | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
IN STOCK
Hamilton Cams 07-C-188/220 188/220 Cam | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-C-188/220 188/220 Cam | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Hamilton Cams

Hamilton Cams 07-C-188/220 188/220 Cam | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: HAM07-C-188/220
$649
Hamilton Cams 07-CC-24V178 Towing Camshaft Combo | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
IN STOCK
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
Fleece FPE-34657-BLK-SPK Upper Fan Pulley Idler - Black Finish Contract Cut | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
IN STOCK
Fleece FPE-34657-BLK-SPK Upper Fan Pulley Idler - Black Finish Contract Cut | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-34657-BLK-SPK Upper Fan Pulley Idler - Black Finish Contract Cut | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-34657-BLK-SPK Upper Fan Pulley Idler - Black Finish Contract Cut | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Fleece Performance Products

Fleece FPE-34657-BLK-SPK Upper Fan Pulley Idler - Black Finish Contract Cut | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: FLCFPE-34657-BLK-SPK
$113.99

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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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