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

Availability
Manufacturer
Make
Model
Year
Price
$0
$20,702.67
Rating
Loading products...
Filter
184 products
Sort by:
Best selling
Availability
Manufacturer
Make
Model
Year
Price
$0
$20,702.67
Rating
Fleece FPE-34797 105LB Valve Spring and Retainer Set | 1998.5-2018 Dodge RAM Cummins
Fleece FPE-34797 105LB Valve Spring and Retainer Set | 1998.5-2018 Dodge RAM Cummins

Fleece Performance Products

Fleece FPE-34797 105LB Valve Spring and Retainer Set | 1998.5-2018 Dodge RAM Cummins

SKU: FLCFPE-34797
$499.99
Edge 98203 License Plate Mount Backup Camera For Edge CTS3 & Diablosport Trinity 2 | Universal
Edge 98203 License Plate Mount Backup Camera For Edge CTS3 & Diablosport Trinity 2 | Universal
Edge 98203 License Plate Mount Backup Camera For Edge CTS3 & Diablosport Trinity 2 | Universal
Edge 98203 License Plate Mount Backup Camera For Edge CTS3 & Diablosport Trinity 2 | Universal

Edge Products

Edge 98203 License Plate Mount Backup Camera For Edge CTS3 & Diablosport Trinity 2 | Universal

SKU: EDG98203
$277.95
$300
Industrial 24EE01 Stage 1 Billet Pushrod | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Industrial 24EE01 Stage 1 Billet Pushrod | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Industrial Injection

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

SKU: IIS24EE01
$25.50
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 $151.32
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
$36.81
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
$21.01
$44.86
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-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 5.9L/6.7L 2500/3500 Cummins
Edge 85401-301 Evolution CTS3 | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Edge 85401-301 Evolution CTS3 | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Edge 85401-301 Evolution CTS3 | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Edge 85401-301 Evolution CTS3 | 2003-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Edge Products

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

SKU: EDG85401-301
$799.95
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
$121.43
$274.25
AFE 44-LF002 Pro-Guard D2 Replacement Oil Filter | 1989-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
AFE 44-LF002 Pro-Guard D2 Replacement Oil Filter | 1989-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

aFe Power

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

SKU: AFE44-LF002
$17.85
Mishimoto MMHOSE-RAM-03DBL Blue Silicone Coolant Hose Kit | 2003-2010 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Mishimoto MMHOSE-RAM-03DBL Blue Silicone Coolant Hose Kit | 2003-2010 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Mishimoto

Mishimoto MMHOSE-RAM-03DBL Blue Silicone Coolant Hose Kit | 2003-2010 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: MIMMMHOSE-RAM-03DBL
$357.95
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
$319.59
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
$78.63
$162.58
Mishimoto MMOC-F HD Transmission Cooler with Fan | Universal
Mishimoto MMOC-F HD Transmission Cooler with Fan | Universal
Mishimoto MMOC-F HD Transmission Cooler with Fan | Universal
Mishimoto MMOC-F HD Transmission Cooler with Fan | Universal
Mishimoto MMOC-F HD Transmission Cooler with Fan | Universal

Mishimoto

Mishimoto MMOC-F HD Transmission Cooler with Fan | Universal

SKU: MIMMMOC-F
$199.95
$209.95
Industrial PDM-06023 14mm Gorilla Girdle with ARP Main Studs Package | 2003-2022 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Industrial PDM-06023 14mm Gorilla Girdle with ARP Main Studs Package | 2003-2022 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Industrial Injection

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

SKU: IISPDM-06023
$1,016.82
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-CCBT Crankshaft Barring Tool Dampers & Fluidamprs | 1994-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-CCBT Crankshaft Barring Tool Dampers & Fluidamprs | 1994-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-CCBT Crankshaft Barring Tool Dampers & Fluidamprs | 1994-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-CCBT Crankshaft Barring Tool Dampers & Fluidamprs | 1994-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Fleece FPE-CCBT Crankshaft Barring Tool Dampers & Fluidamprs | 1994-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Fleece Performance Products

Fleece FPE-CCBT Crankshaft Barring Tool Dampers & Fluidamprs | 1994-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: FLCFPE-CCBT
$74.99
Edge 98005 CTS2 Pod Adapter | Universal
Edge 98005 CTS2 Pod Adapter | Universal
Edge 98005 CTS2 Pod Adapter | Universal

Edge Products

Edge 98005 CTS2 Pod Adapter | Universal

SKU: EDG98005
$28.88
$38.33
Edge 98616 EAS Control Kit | Universal
Edge 98616 EAS Control Kit | Universal
Edge 98616 EAS Control Kit | Universal

Edge Products

Edge 98616 EAS Control Kit | Universal

SKU: EDG98616
$413.95
$429.99
Edge 98604 EAS Turbo Timer | Universal
Edge 98604 EAS Turbo Timer | Universal
Edge 98604 EAS Turbo Timer | Universal

Edge Products

Edge 98604 EAS Turbo Timer | Universal

SKU: EDG98604
$285.95
$299
Edge 98602 EAS Starter Cable for CS2/CTS2/CTS3 | Universal
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
$73.05
$79.05

FREE SHIPPING ON ALL
ORDERS OVER $70

PRICE MATCH GUARANTEE

BUILD NOW, PAY LATER
FINANCING OPTIONS

30-DAY RETURN SATISFACTION GUARANTEE

DIESEL TRUCK EXPERTS STANDING BY

2003-2004 5.9L Dodge Ram 2500/3500

Power Lift Shop All

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

Can We Help You Find Something?

Give us a call: +1-208-719-7400

Chat With Us
THE GARAGE

The Garage

Welcome to The Garage – your one-stop shop for all your car care and maintenance needs. From premium oils and filters to top-notch car care products, we have everything you need to keep your vehicle running smoothly and looking its best. Whether you're a DIY enthusiast or a professional mechanic, our carefully curated selection of high-quality products will help you take care of your ride like never before.

Shop The Garage