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

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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$20,702.67
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Fleece FPE-CLNTBYPS-CUMMINS-0305-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins AT
Fleece FPE-CLNTBYPS-CUMMINS-0305-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins AT
Fleece FPE-CLNTBYPS-CUMMINS-0305-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins AT
Fleece FPE-CLNTBYPS-CUMMINS-0305-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins AT
Fleece FPE-CLNTBYPS-CUMMINS-0305-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins AT

Fleece Performance Products

Fleece FPE-CLNTBYPS-CUMMINS-0305-SS Coolant Bypass Kit with Stainless Steel Braided Line | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins AT

SKU: FLCFPE-CLNTBYPS-CUMMINS-0305-SS
$359
Fleece FPE-34657-BLK Upper Fan Pulley Idler Black | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-34657-BLK Upper Fan Pulley Idler Black | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-34657-BLK Upper Fan Pulley Idler Black | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-34657-BLK Upper Fan Pulley Idler Black | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Fleece Performance Products

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

SKU: FLCFPE-34657-BLK
$91.19
Fleece FPE-34658-BLK-SPK Upper Fan Idler for use with Electric Water Pumps Black Finish Contract Cut | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-34658-BLK-SPK Upper Fan Idler for use with Electric Water Pumps Black Finish Contract Cut | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-34658-BLK-SPK Upper Fan Idler for use with Electric Water Pumps Black Finish Contract Cut | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-34658-BLK-SPK Upper Fan Idler for use with Electric Water Pumps Black Finish Contract Cut | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Fleece Performance Products

Fleece FPE-34658-BLK-SPK Upper Fan Idler for use with Electric Water Pumps Black Finish Contract Cut | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: FLCFPE-34658-BLK-SPK
$113.99
ATS 103-910-2272 Fire Ring Parts Kit | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
ATS 103-910-2272 Fire Ring Parts Kit | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

ATS Diesel Performance

ATS 103-910-2272 Fire Ring Parts Kit | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: ATS103-910-2272
$436.42
$484.92
Edge 38406 Pillar Pod for CTS3 and Trinity 2 | 2003-2008 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Edge 38406 Pillar Pod for CTS3 and Trinity 2 | 2003-2008 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Edge Products

Edge 38406 Pillar Pod for CTS3 and Trinity 2 | 2003-2008 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: EDG38406
$149.95
Edge 31502-3 Juice with Attitude CTS3 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins
Edge 31502-3 Juice with Attitude CTS3 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

Edge Products

Edge 31502-3 Juice with Attitude CTS3 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

SKU: EDG31502-3
$1,299.95
Industrial PDM-59STKBB Stock Plus Builder Box | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Industrial PDM-59STKBB Stock Plus Builder Box | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Industrial Injection

Industrial PDM-59STKBB Stock Plus Builder Box | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: IISPDM-59STKBB
$6,312.22
$6,644.45
Industrial PDM-59RHC Stage 2 Race Performance Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Industrial PDM-59RHC Stage 2 Race Performance Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Industrial PDM-59RHC Stage 2 Race Performance Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Industrial Injection

Industrial PDM-59RHC Stage 2 Race Performance Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: IISPDM-59RHC
$5,706.19
$6,006.52
Industrial PDM-59RBB Race Performance Builder Box | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Industrial PDM-59RBB Race Performance Builder Box | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Industrial Injection

Industrial PDM-59RBB Race Performance Builder Box | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: IISPDM-59RBB
$14,283.20
$15,034.95
Industrial PDM-59CRRH Stage 1 Race Performance Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Industrial PDM-59CRRH Stage 1 Race Performance Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Industrial PDM-59CRRH Stage 1 Race Performance Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Industrial Injection

Industrial PDM-59CRRH Stage 1 Race Performance Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: IISPDM-59CRRH
$6,052.36
$6,370.91
Industrial PDM-59CRSTH Street Performance Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Industrial PDM-59CRSTH Street Performance Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Industrial Injection

Industrial PDM-59CRSTH Street Performance Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: IISPDM-59CRSTH
$4,373.39
$4,603.57
Industrial PDM-06020 12mm Gorilla Girdle with ARP Main Studs | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Industrial PDM-06020 12mm Gorilla Girdle with ARP Main Studs | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Industrial PDM-06020 12mm Gorilla Girdle with ARP Main Studs | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Industrial Injection

Industrial PDM-06020 12mm Gorilla Girdle with ARP Main Studs | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: IISPDM-06020
$1,255.03
$1,321.09
PPE 213001077 6mm 5-Ply Dual Fueler Coolant Hose Short | 1994-2019 Dodge RAM 2500/3500 5.9L/6.7L Cummins
PPE 213001077 6mm 5-Ply Dual Fueler Coolant Hose Short | 1994-2019 Dodge RAM 2500/3500 5.9L/6.7L Cummins
PPE 213001077 6mm 5-Ply Dual Fueler Coolant Hose Short | 1994-2019 Dodge RAM 2500/3500 5.9L/6.7L Cummins

PPE

PPE 213001077 6mm 5-Ply Dual Fueler Coolant Hose Short | 1994-2019 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: PPE213001077
$17.09
$17.99
Fleece FPE-OC-CR-F-ORG Cummins Billet Oil Cap Cover Orange | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-OC-CR-F-ORG Cummins Billet Oil Cap Cover Orange | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-OC-CR-F-ORG Cummins Billet Oil Cap Cover Orange | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Fleece Performance Products

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

SKU: FLCFPE-OC-CR-F-ORG
$34.99
Fleece FPE-OC-CR-F-BLU Billet Oil Cap Cover - Blue | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-OC-CR-F-BLU Billet Oil Cap Cover - Blue | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-OC-CR-F-BLU Billet Oil Cap Cover - Blue | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Fleece Performance Products

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

SKU: FLCFPE-OC-CR-F-BLU
$34.99
DiabloSport 7303 Predator 2 Tuner | 2004-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
DiabloSport 7303 Predator 2 Tuner | 2004-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

DiabloSport

DiabloSport 7303 Predator 2 Tuner | 2004-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: DSP7303
$425.65
$472.95
BD Diesel 1040023 Killer Frost Plug Plate | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
BD Diesel 1040023 Killer Frost Plug Plate | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
BD Diesel 1040023 Killer Frost Plug Plate | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

BD Diesel

BD Diesel 1040023 Killer Frost Plug Plate | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: BDD1040023
$62.95
$69.95
Edge 31402 Juice w/Attitude CS2 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins
Edge 31402 Juice w/Attitude CS2 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

Edge Products

Edge 31402 Juice w/Attitude CS2 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

SKU: EDG31402
$1,049.95
Edge 30203 EZ Module | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins
Edge 30203 EZ Module | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

Edge Products

Edge 30203 EZ Module | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

SKU: EDG30203
$549.95
Mahle 54556 Victor Reinz 1.10mm Thick Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Mahle 54556 Victor Reinz 1.10mm Thick Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Victor Reinz

Mahle 54556 Victor Reinz 1.10mm Thick Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: MCI54556
$448.50

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2003-2004 5.9L Dodge Ram 2500/3500

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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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