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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Edge 85401-301 Evolution CTS3 | 2003-2012 Dodge RAM 2500/3500 5.9L/6.7L Cummins
IN STOCK
Edge 85401-301 Evolution CTS3 | 2003-2012 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Edge 85401-301 Evolution CTS3 | 2003-2012 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Edge 85401-301 Evolution CTS3 | 2003-2012 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Edge 85401-301 Evolution CTS3 | 2003-2012 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Edge Products

Edge 85401-301 Evolution CTS3 | 2003-2012 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: EDG85401-301
$849.95
$956.95
Industrial PDM-08207 Freeze Plug Back Plate Plug W/ O Ring | 2003-2018 Dodge RAM 2500/3500 5.9/6.7 Cummins
Industrial PDM-08207 Freeze Plug Back Plate Plug W/ O Ring | 2003-2018 Dodge RAM 2500/3500 5.9/6.7 Cummins
Industrial PDM-08207 Freeze Plug Back Plate Plug W/ O Ring | 2003-2018 Dodge RAM 2500/3500 5.9/6.7 Cummins
Industrial PDM-08207 Freeze Plug Back Plate Plug W/ O Ring | 2003-2018 Dodge RAM 2500/3500 5.9/6.7 Cummins
Industrial PDM-08207 Freeze Plug Back Plate Plug W/ O Ring | 2003-2018 Dodge RAM 2500/3500 5.9/6.7 Cummins
Industrial PDM-08207 Freeze Plug Back Plate Plug W/ O Ring | 2003-2018 Dodge RAM 2500/3500 5.9/6.7 Cummins

Industrial Injection

Industrial PDM-08207 Freeze Plug Back Plate Plug W/ O Ring | 2003-2018 Dodge RAM 2500/3500 5.9/6.7 Cummins

SKU: IISPDM-08207
$67.85
$69.95
Hamilton Cams 07-R-003 24V High Performance OEM-Style Rocker Arms | 1998.5–2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-R-003 24V High Performance OEM-Style Rocker Arms | 1998.5–2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-R-003 24V High Performance OEM-Style Rocker Arms | 1998.5–2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-R-003 24V High Performance OEM-Style Rocker Arms | 1998.5–2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Hamilton Cams

Hamilton Cams 07-R-003 24V High Performance OEM-Style Rocker Arms | 1998.5–2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: HAM07-R-003
$889
$899
Fleece FPE-CUMM-LHCL-0312 Lower Heater Return Hose | 2003-2012 Dodge Ram 2500/3500 5.9L/6.7L Cummins
IN STOCK
Fleece FPE-CUMM-LHCL-0312 Lower Heater Return Hose | 2003-2012 Dodge Ram 2500/3500 5.9L/6.7L Cummins
Fleece FPE-CUMM-LHCL-0312 Lower Heater Return Hose | 2003-2012 Dodge Ram 2500/3500 5.9L/6.7L Cummins

Fleece Performance Products

Fleece FPE-CUMM-LHCL-0312 Lower Heater Return Hose | 2003-2012 Dodge Ram 2500/3500 5.9L/6.7L Cummins

SKU: FLCFPE-CUMM-LHCL-0312
$39.99
$41.99
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
JEEPCABLES RAMG3-0205-2/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 2/0 GA) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel
IN STOCK
JEEPCABLES RAMG3-0205-2/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 2/0 GA) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel
JEEPCABLES RAMG3-0205-2/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 2/0 GA) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel
JEEPCABLES RAMG3-0205-2/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 2/0 GA) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel
JEEPCABLES RAMG3-0205-2/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 2/0 GA) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel

JEEPCABLES

JEEPCABLES RAMG3-0205-2/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 2/0 GA) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel

SKU: JEERAMG3-0205-20G-5.9-6.7DIESE
$375.50
AFE 44-LF002 Pro-Guard D2 Replacement Oil Filter | 1989-2024 Dodge RAM 2500/3500 5.9L/6.7L Cummins
IN STOCK
AFE 44-LF002 Pro-Guard D2 Replacement Oil Filter | 1989-2024 Dodge RAM 2500/3500 5.9L/6.7L Cummins

aFe Power

AFE 44-LF002 Pro-Guard D2 Replacement Oil Filter | 1989-2024 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: AFE44-LF002
$18
Industrial Injection IIS237603 Pressure Relief Valve Block Off | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Industrial Injection IIS237603 Pressure Relief Valve Block Off | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Industrial Injection

Industrial Injection IIS237603 Pressure Relief Valve Block Off | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: IIS237603
$39.72
$53
PPE 518001000 Weld-On Billet Radiator Neck | Universal
IN STOCK
PPE 518001000 Weld-On Billet Radiator Neck | Universal
PPE 518001000 Weld-On Billet Radiator Neck | Universal

PPE

PPE 518001000 Weld-On Billet Radiator Neck | Universal

SKU: PPE518001000
$22.49
Mahle MS2328P P-Series Main Bearing Replacement Set | 1989-2017 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
IN STOCK
Mahle MS2328P P-Series Main Bearing Replacement Set | 1989-2017 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Mahle

Mahle MS2328P P-Series Main Bearing Replacement Set | 1989-2017 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: MCIMS2328P
$89.01
Industrial PDM-06023 14mm Gorilla Girdle with ARP Main Studs Package | 2003-2022 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Industrial PDM-06023 14mm Gorilla Girdle with ARP Main Studs Package | 2003-2022 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Industrial PDM-06023 14mm Gorilla Girdle with ARP Main Studs Package | 2003-2022 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Industrial Injection

Industrial PDM-06023 14mm Gorilla Girdle with ARP Main Studs Package | 2003-2022 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: IISPDM-06023
$1,321.09
Edge 98005 CTS2 Pod Adapter | Universal
IN STOCK
Edge 98005 CTS2 Pod Adapter | Universal
Edge 98005 CTS2 Pod Adapter | Universal

Edge Products

Edge 98005 CTS2 Pod Adapter | Universal

SKU: EDG98005
$30.78
$34.63
Edge 98616 EAS Control Kit | Universal
IN STOCK
Edge 98616 EAS Control Kit | Universal
Edge 98616 EAS Control Kit | Universal

Edge Products

Edge 98616 EAS Control Kit | Universal

SKU: EDG98616
$292.95
$506.95
Edge 98602 EAS Starter Cable for CS2/CTS2/CTS3 | Universal
IN STOCK
Edge 98602 EAS Starter Cable for CS2/CTS2/CTS3 | Universal
Edge 98602 EAS Starter Cable for CS2/CTS2/CTS3 | Universal

Edge Products

Edge 98602 EAS Starter Cable for CS2/CTS2/CTS3 | Universal

SKU: EDG98602
$77.89
$87.95
Carrillo DH7103 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo DH7103 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo DH7103 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo DH7103 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Carrillo

Carrillo DH7103 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: CRLDH7103SET
$2,463.30
$2,605.50
Edge 98607 0-100 PSIG EAS Pressure Sensor | Universal
IN STOCK
Edge 98607 0-100 PSIG EAS Pressure Sensor | Universal

Edge Products

Edge 98607 0-100 PSIG EAS Pressure Sensor | Universal

SKU: EDG98607
$220.95
$248.95
Wehrli 100394 Billet Oil Fill Cap Clear Anodized | 1998.5-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Wehrli 100394 Billet Oil Fill Cap Clear Anodized | 1998.5-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Wehrli 100394 Billet Oil Fill Cap Clear Anodized | 1998.5-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Wehrli 100394 Billet Oil Fill Cap Clear Anodized | 1998.5-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Wehrli Custom Fab

Wehrli 100394 Billet Oil Fill Cap Clear Anodized | 1998.5-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: WCF100394
$58.20
Fleece FPE-CUMM-CYLHD-KIT Cylinder Head Dowels | 1989-2023 Dodge RAM 2500/3500 5.9L/6.7L Cummins
IN STOCK
Fleece FPE-CUMM-CYLHD-KIT Cylinder Head Dowels | 1989-2023 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-CUMM-CYLHD-KIT Cylinder Head Dowels | 1989-2023 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-CUMM-CYLHD-KIT Cylinder Head Dowels | 1989-2023 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Fleece Performance Products

Fleece FPE-CUMM-CYLHD-KIT Cylinder Head Dowels | 1989-2023 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: FLCFPE-CUMM-CYLHD-KIT
$20.99
Fleece FPE-CLNTBYPS-HS-HC-0305 Replacement EPDM Cooland Bypass Hose | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins
IN STOCK
Fleece FPE-CLNTBYPS-HS-HC-0305 Replacement EPDM Cooland Bypass Hose | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins

Fleece Performance Products

Fleece FPE-CLNTBYPS-HS-HC-0305 Replacement EPDM Cooland Bypass Hose | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins

SKU: FLCFPE-CLNTBYPS-HS-HC-0305
$25.99
Fleece FPE-CUMM-HG-5.9-FR Fire Ring Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
IN STOCK
Fleece FPE-CUMM-HG-5.9-FR Fire Ring Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-CUMM-HG-5.9-FR Fire Ring Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-CUMM-HG-5.9-FR Fire Ring Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-CUMM-HG-5.9-FR Fire Ring Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Fleece Performance Products

Fleece FPE-CUMM-HG-5.9-FR Fire Ring Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: FLCFPE-CUMM-HG-5.9-FR
$339
Fleece FPE-CUMM-FGHD-KIT Front Gear Housing Dowels | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
IN STOCK
Fleece FPE-CUMM-FGHD-KIT Front Gear Housing Dowels | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-CUMM-FGHD-KIT Front Gear Housing Dowels | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Fleece Performance Products

Fleece FPE-CUMM-FGHD-KIT Front Gear Housing Dowels | 2003-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: FLCFPE-CUMM-FGHD-KIT
$18.99
Mahle .020 Over Piston | 2005-2007 Dodge RAM 2500/3500 5.9L Cummins
Mahle .020 Over Piston | 2005-2007 Dodge RAM 2500/3500 5.9L Cummins
Mahle .020 Over Piston | 2005-2007 Dodge RAM 2500/3500 5.9L Cummins
Mahle .020 Over Piston | 2005-2007 Dodge RAM 2500/3500 5.9L Cummins

Mahle

Mahle .020 Over Piston | 2005-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: MCI2243673020
$120
$240.64
Mahle S42170 Piston Ring Set | 2004.5-2007 Dodge RAM 2500/3500 5.9L Cummins
IN STOCK
Mahle S42170 Piston Ring Set | 2004.5-2007 Dodge RAM 2500/3500 5.9L Cummins

Mahle

Mahle S42170 Piston Ring Set | 2004.5-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: MCIS42170
$39.36
Fleece FPE-34657-AL Billet Aluminum Upper Fan Pulley Idler | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-34657-AL Billet Aluminum Upper Fan Pulley Idler | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-34657-AL Billet Aluminum Upper Fan Pulley Idler | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Fleece Performance Products

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

SKU: FLCFPE-34657-AL
$85.49

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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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