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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Wehrli 100241-RAW Billet Individual Runner Intake Manifold | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L 2500/3500 Cummins
Wehrli 100241-RAW Billet Individual Runner Intake Manifold | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L 2500/3500 Cummins
Wehrli 100241-RAW Billet Individual Runner Intake Manifold | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L 2500/3500 Cummins
Wehrli 100241-RAW Billet Individual Runner Intake Manifold | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L 2500/3500 Cummins
Wehrli 100241-RAW Billet Individual Runner Intake Manifold | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L 2500/3500 Cummins

Wehrli Custom Fab

Wehrli 100241-RAW Billet Individual Runner Intake Manifold | 2003-2018 Dodge RAM 2500/3500 5.9L/6.7L 2500/3500 Cummins

SKU: WCF100241-RAW
$2,575
Industrial 24EE04 Stage 3 Chromoly Pushrod Set | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Industrial 24EE04 Stage 3 Chromoly Pushrod Set | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Industrial 24EE04 Stage 3 Chromoly Pushrod Set | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Industrial Injection

Industrial 24EE04 Stage 3 Chromoly Pushrod Set | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: IIS24EE04
$470.40
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 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-C-188/220S 188/220 Steel Street/Strip Cam Shaft | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-C-188/220S 188/220 Steel Street/Strip Cam Shaft | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-C-188/220S 188/220 Steel Street/Strip Cam Shaft | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Hamilton Cams

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

SKU: HAM07-C-188/220S
$699
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 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
Fleece FPE-34797 105LB Valve Spring and Retainer Set | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-34797 105LB Valve Spring and Retainer Set | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-34797 105LB Valve Spring and Retainer Set | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Fleece Performance Products

Fleece FPE-34797 105LB Valve Spring and Retainer Set | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: FLCFPE-34797
$499.99
Edge 98611 EAS Expandable Probe | Universal
Edge 98611 EAS Expandable Probe | Universal
Edge 98611 EAS Expandable Probe | Universal
Edge 98611 EAS Expandable Probe | Universal

Edge Products

Edge 98611 EAS Expandable Probe | Universal

SKU: EDG98611
$181.95
Fleece FPE-CLNTBYPS-HS-CRVP-BLK Coolant Bypass Hose - Black Nylon Braided | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-CLNTBYPS-HS-CRVP-BLK Coolant Bypass Hose - Black Nylon Braided | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-CLNTBYPS-HS-CRVP-BLK Coolant Bypass Hose - Black Nylon Braided | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Fleece FPE-CLNTBYPS-HS-CRVP-BLK Coolant Bypass Hose - Black Nylon Braided | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Fleece Performance Products

Fleece FPE-CLNTBYPS-HS-CRVP-BLK Coolant Bypass Hose - Black Nylon Braided | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: FLCFPE-CLNTBYPS-HS-CRVP-BLK
$75.76
Industrial 24EE01 Stage 1 Billet Pushrod | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Industrial 24EE01 Stage 1 Billet Pushrod | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Industrial 24EE01 Stage 1 Billet Pushrod | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Industrial Injection

Industrial 24EE01 Stage 1 Billet Pushrod | 1998.5-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: IIS24EE01
$29.05
Mahle CB-1873H H-Series Rod Bearing | 2003-2017 Dodge RAM 2500/3500 Cummins
Mahle CB-1873H H-Series Rod Bearing | 2003-2017 Dodge RAM 2500/3500 Cummins

Mahle

Mahle CB-1873H H-Series Rod Bearing | 2003-2017 Dodge RAM 2500/3500 Cummins

SKU: MCICB-1873H
$22.68
EFI Live LIC-FS2-VIN Tuning FlashScan V2 VIN License | Universal
EFI Live LIC-FS2-VIN Tuning FlashScan V2 VIN License | Universal
EFI Live LIC-FS2-VIN Tuning FlashScan V2 VIN License | Universal

EFI Live

EFI Live LIC-FS2-VIN Tuning FlashScan V2 VIN License | Universal

SKU: EFILIC-FS2-VIN
$125
$129.99
Fleece FPE-61-10005-HD Freedom Series Cylinder Head (Street HD) | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-61-10005-HD Freedom Series Cylinder Head (Street HD) | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-61-10005-HD Freedom Series Cylinder Head (Street HD) | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-61-10005-HD Freedom Series Cylinder Head (Street HD) | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Fleece Performance Products

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

SKU: FLCFPE-61-10005-HD
$2,599
$2,699
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 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
Fleece FPE-34660-AL Fan Drive Pulley Bare Aluminum Finish | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-34660-AL Fan Drive Pulley Bare Aluminum Finish | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-34660-AL Fan Drive Pulley Bare Aluminum Finish | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-34660-AL Fan Drive Pulley Bare Aluminum Finish | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Fleece Performance Products

Fleece FPE-34660-AL Fan Drive Pulley Bare Aluminum Finish | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: FLCFPE-34660-AL
$85.49
Fleece FPE-34660-BLK Fan Drive Pulley Black Finish | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-34660-BLK Fan Drive Pulley Black Finish | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-34660-BLK Fan Drive Pulley Black Finish | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Fleece Performance Products

Fleece FPE-34660-BLK Fan Drive Pulley Black Finish | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: FLCFPE-34660-BLK
$91.19
DuramaxTuner DT1202040101000 Smarty UDC Tuning incl MM3 Hardware | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
DuramaxTuner DT1202040101000 Smarty UDC Tuning incl MM3 Hardware | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
DuramaxTuner DT1202040101000 Smarty UDC Tuning incl MM3 Hardware | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Duramax Tuner

DuramaxTuner DT1202040101000 Smarty UDC Tuning incl MM3 Hardware | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: DMTDT1202040101000
$1,230
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 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
$819.95
Mahle 54557A 1.28MM Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Mahle 54557A 1.28MM Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Mahle

Mahle 54557A 1.28MM Head Gasket | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: MCI54557A
$133.20
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
BD Diesel DJPCNC100071 Billet Valve Cover Dodge RAM Cummins | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins
BD Diesel DJPCNC100071 Billet Valve Cover Dodge RAM Cummins | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins
BD Diesel DJPCNC100071 Billet Valve Cover Dodge RAM Cummins | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins
BD Diesel DJPCNC100071 Billet Valve Cover Dodge RAM Cummins | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins

BD Diesel

BD Diesel DJPCNC100071 Billet Valve Cover Dodge RAM Cummins | 2003-2005 Dodge RAM 2500/3500 5.9L Cummins

SKU: BDDDJPCNC100071
$608.99
AFE 44-LF002 Pro-Guard D2 Replacement Oil Filter | 1989-2024 Dodge RAM 2500/3500 5.9L/6.7L Cummins
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
$17.85
Industrial 24EE03 Stage 1 Billet Pushrod Set | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Industrial 24EE03 Stage 1 Billet Pushrod Set | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Industrial 24EE03 Stage 1 Billet Pushrod Set | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Industrial Injection

Industrial 24EE03 Stage 1 Billet Pushrod Set | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: IIS24EE03
$354
Mahle MS-2328P P-Series Main Bearing Replacement Set | 1989-2017 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Mahle MS-2328P P-Series Main Bearing Replacement Set | 1989-2017 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Mahle

Mahle MS-2328P P-Series Main Bearing Replacement Set | 1989-2017 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: MCIMS-2328P
$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

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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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