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

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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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Industrial PDM-160-1484S-24 95LB Valve Springs | 2003-2007 RAM 2500/3500 5.9L 24V Cummins
Industrial PDM-160-1484S-24 95LB Valve Springs | 2003-2007 RAM 2500/3500 5.9L 24V Cummins

Industrial Injection

Industrial PDM-160-1484S-24 95LB Valve Springs | 2003-2007 RAM 2500/3500 5.9L 24V Cummins

$374.39
Industrial 24EE04 Stage 3 Chromoly Pushrod Set | 1998.5-2018 RAM 5.9L/6.7L 2500/3500 Cummins
Industrial 24EE04 Stage 3 Chromoly Pushrod Set | 1998.5-2018 RAM 5.9L/6.7L 2500/3500 Cummins

Industrial Injection

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

$427.84
Industrial 24EE02 Stage 3 Chromoly Pushrod | 1998.5-2018 RAM 5.9L/6.7L 2500/3500 Cummins
Industrial 24EE02 Stage 3 Chromoly Pushrod | 1998.5-2018 RAM 5.9L/6.7L 2500/3500 Cummins

Industrial Injection

Industrial 24EE02 Stage 3 Chromoly Pushrod | 1998.5-2018 RAM 5.9L/6.7L 2500/3500 Cummins

$35
Carli CS-DCMM Chromoly Motor Mounts | 2003-2007 RAM 2500/3500 5.9L Cummins
Carli CS-DCMM Chromoly Motor Mounts | 2003-2007 RAM 2500/3500 5.9L Cummins

Carli Suspension

Carli CS-DCMM Chromoly Motor Mounts | 2003-2007 RAM 2500/3500 5.9L Cummins

$550
Carrillo DH7107PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 RAM 6.4L HEMI
Carrillo DH7107PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 RAM 6.4L HEMI
Carrillo DH7107PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 RAM 6.4L HEMI
Carrillo DH7107PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 RAM 6.4L HEMI

Carrillo

Carrillo DH7107PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 RAM 6.4L HEMI

$5,084.10
Carrillo DH7106PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 RAM 6.4L HEMI
Carrillo DH7106PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 RAM 6.4L HEMI
Carrillo DH7106PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 RAM 6.4L HEMI

Carrillo

Carrillo DH7106PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 RAM 6.4L HEMI

$5,084.10
Wehrli 100395 Billet Oil Fill Cap Black Anodized | 1998.5-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Wehrli 100395 Billet Oil Fill Cap Black Anodized | 1998.5-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Wehrli 100395 Billet Oil Fill Cap Black Anodized | 1998.5-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Wehrli 100395 Billet Oil Fill Cap Black Anodized | 1998.5-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Wehrli Custom Fab

Wehrli 100395 Billet Oil Fill Cap Black Anodized | 1998.5-2024 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

$57.23
Cometic PRO3002B Bottom End Gasket Kit | 1998-2008 Dodge RAM 2500/3500 5.9L Cummins
Cometic PRO3002B Bottom End Gasket Kit | 1998-2008 Dodge RAM 2500/3500 5.9L Cummins

Cometic

Cometic PRO3002B Bottom End Gasket Kit | 1998-2008 Dodge RAM 2500/3500 5.9L Cummins

$206.46
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

$22.49
Fleece FPE-61-10006 Freedom Series Cylinder Head Performance | 1994-2007 RAM 2500/3500 5.9L Cummins
Fleece FPE-61-10006 Freedom Series Cylinder Head Performance | 1994-2007 RAM 2500/3500 5.9L Cummins

Fleece Performance Products

Fleece FPE-61-10006 Freedom Series Cylinder Head Performance | 1994-2007 RAM 2500/3500 5.9L Cummins

$3,750
Mahle MS-2328P P-Series Main Bearing Replacement Set | 1989-2017 RAM 5.9L/6.7L 2500/3500 Cummins
Mahle MS-2328P P-Series Main Bearing Replacement Set | 1989-2017 RAM 5.9L/6.7L 2500/3500 Cummins

Mahle

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

$78.63
$162.58
Hamilton Cams 07-C-188/220 188/220 Cam | 1989-2018 RAM 5.9L/6.7L 2500/3500 Cummins
Hamilton Cams 07-C-188/220 188/220 Cam | 1989-2018 RAM 5.9L/6.7L 2500/3500 Cummins

Hamilton Cams

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

$649

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

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