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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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 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
JEEPCABLES RAMG3-0205-1/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 1/0) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel
JEEPCABLES RAMG3-0205-1/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 1/0) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel
JEEPCABLES RAMG3-0205-1/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 1/0) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel
JEEPCABLES RAMG3-0205-1/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 1/0) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel
JEEPCABLES RAMG3-0205-1/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 1/0) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel

JEEPCABLES

JEEPCABLES RAMG3-0205-1/0G-5.9-6.7DIESEL 3rd Gen Battery Cable Kit (Size 1/0) | 2002-2005 Dodge RAM 2500/3500 Cummins Diesel

SKU: JEERAMG3-0205-10G-5.9-6.7DIESE
$310.50
DFC Diesel TH590304STAUSOALBHD Tow/Haul HD Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel TH590304STAUSOALBHD Tow/Haul HD Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel TH590304STAUSOALBHD Tow/Haul HD Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel TH590304STAUSOALBHD Tow/Haul HD Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel TH590304STAUSOALBHD Tow/Haul HD Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel TH590304STAUSOALBHD Tow/Haul HD Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins

DFC Diesel

DFC Diesel TH590304STAUSOALBHD Tow/Haul HD Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins

SKU: DDUTH590304STAUSOALBHD
$20,702.67
DFC Diesel TH590304STAUSOALB Tow/Haul Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel TH590304STAUSOALB Tow/Haul Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel TH590304STAUSOALB Tow/Haul Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel TH590304STAUSOALB Tow/Haul Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel TH590304STAUSOALB Tow/Haul Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel TH590304STAUSOALB Tow/Haul Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins

DFC Diesel

DFC Diesel TH590304STAUSOALB Tow/Haul Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins

SKU: DDUTH590304STAUSOALB
$15,394.77
DFC Diesel SS590304STAUSOALB Street Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel SS590304STAUSOALB Street Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel SS590304STAUSOALB Street Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel SS590304STAUSOALB Street Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel SS590304STAUSOALB Street Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins
DFC Diesel SS590304STAUSOALB Street Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins

DFC Diesel

DFC Diesel SS590304STAUSOALB Street Series Speed of Air Long Block Crate Engine (STD/Auto) | 2003-2004 Dodge RAM 5.9L Cummins

SKU: DDUSS590304STAUSOALB
$11,171.44
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
$548.09
$608.99
BD Diesel DJPCH100027 Stage 1 Performance Cylinder Head w/ Fire Ring | 2003-2007 Dodge RAM 2500-3500 5.9L Cummins
BD Diesel DJPCH100027 Stage 1 Performance Cylinder Head w/ Fire Ring | 2003-2007 Dodge RAM 2500-3500 5.9L Cummins
BD Diesel DJPCH100027 Stage 1 Performance Cylinder Head w/ Fire Ring | 2003-2007 Dodge RAM 2500-3500 5.9L Cummins

BD Diesel

BD Diesel DJPCH100027 Stage 1 Performance Cylinder Head w/ Fire Ring | 2003-2007 Dodge RAM 2500-3500 5.9L Cummins

SKU: BDDDJPCH100027
$3,118.49
$3,464.99
BD Diesel DJPCH100026 Stage 1 Performance Cylinder Head - with out Fire Ring | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
BD Diesel DJPCH100026 Stage 1 Performance Cylinder Head - with out Fire Ring | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
BD Diesel DJPCH100026 Stage 1 Performance Cylinder Head - with out Fire Ring | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

BD Diesel

BD Diesel DJPCH100026 Stage 1 Performance Cylinder Head - with out Fire Ring | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: BDDDJPCH100026
$2,834.99
$3,149.99
BD Diesel DJPCH100008 Reman Cylinder Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
BD Diesel DJPCH100008 Reman Cylinder Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
BD Diesel DJPCH100008 Reman Cylinder Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

BD Diesel

BD Diesel DJPCH100008 Reman Cylinder Head | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: BDDDJPCH100008
$1,984.49
$2,204.99
Banks 66412 AutoMind 2 Hand-Held Flash Programmer | 2004-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Banks 66412 AutoMind 2 Hand-Held Flash Programmer | 2004-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Banks 66412 AutoMind 2 Hand-Held Flash Programmer | 2004-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Banks 66412 AutoMind 2 Hand-Held Flash Programmer | 2004-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Banks Power

Banks 66412 AutoMind 2 Hand-Held Flash Programmer | 2004-2012 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

SKU: BAN66412
$439
AFE 46-50064-B BladeRunner Silicone Radiator Hose Kit | 2003-2009 Dodge RAM 5.9L / 6.7L Cummins
AFE 46-50064-B BladeRunner Silicone Radiator Hose Kit | 2003-2009 Dodge RAM 5.9L / 6.7L Cummins
AFE 46-50064-B BladeRunner Silicone Radiator Hose Kit | 2003-2009 Dodge RAM 5.9L / 6.7L Cummins

AFE Power

AFE 46-50064-B BladeRunner Silicone Radiator Hose Kit | 2003-2009 Dodge RAM 5.9L / 6.7L Cummins

SKU: AFE46-50064-B
$167.26
$185.85
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
$37.73
$39.72
Mishimoto MMOC-RAM-03 Replacement Oil Cooler | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Mishimoto MMOC-RAM-03 Replacement Oil Cooler | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Mishimoto MMOC-RAM-03 Replacement Oil Cooler | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Mishimoto

Mishimoto MMOC-RAM-03 Replacement Oil Cooler | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: MIMMMOC-RAM-03
$291.95
Sinister SD-COOLFIL-5.9-03-W Coolant Filtration System | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Sinister SD-COOLFIL-5.9-03-W Coolant Filtration System | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Sinister Diesel

Sinister SD-COOLFIL-5.9-03-W Coolant Filtration System | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: SINSD-COOLFIL-5.9-03-W
$219.99
S&B 66-2247 Stock Replacement Oiled Filter | 2002-2007 Dodge RAM 1500/2500
S&B 66-2247 Stock Replacement Oiled Filter | 2002-2007 Dodge RAM 1500/2500

S&B Filters

S&B 66-2247 Stock Replacement Oiled Filter | 2002-2007 Dodge RAM 1500/2500

SKU: SAB66-2247
$39.32
Mishimoto MMHOSE-RAM-03DRD Silicone Coolant Hose Kit | 2003-2010 Dodge RAM Cummins
Mishimoto MMHOSE-RAM-03DRD Silicone Coolant Hose Kit | 2003-2010 Dodge RAM Cummins

Mishimoto

Mishimoto MMHOSE-RAM-03DRD Silicone Coolant Hose Kit | 2003-2010 Dodge RAM Cummins

SKU: MIMMMHOSE-RAM-03DRD
$357.95
Mishimoto MMHOSE-RAM-03DBK Black Silicone Coolant Hose Kit | 2003-2010 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Mishimoto MMHOSE-RAM-03DBK Black Silicone Coolant Hose Kit | 2003-2010 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Mishimoto

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

SKU: MIMMMHOSE-RAM-03DBK
$357.95
Industrial PDM-3672.040 Stock Pistons Kit .040 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins
Industrial PDM-3672.040 Stock Pistons Kit .040 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

Industrial Injection

Industrial PDM-3672.040 Stock Pistons Kit .040 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

SKU: IISPDM-3672.040
$1,296.50
$1,364.74
Industrial PDM-3672.020 Stock Pistons Kit .020 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins
Industrial PDM-3672.020 Stock Pistons Kit .020 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

Industrial Injection

Industrial PDM-3672.020 Stock Pistons Kit .020 | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

SKU: IISPDM-3672.020
$1,296.50
$1,364.74
Industrial PDM-3672 Stock Pistons Kit STD | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins
Industrial PDM-3672 Stock Pistons Kit STD | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

Industrial Injection

Industrial PDM-3672 Stock Pistons Kit STD | 2003-2004 Dodge RAM 2500/3500 5.9L Cummins

SKU: IISPDM-3672
$1,296.50
$1,364.74
Industrial PDM-160-1484S-24 95LB Valve Springs | 2003-2007 Dodge RAM 2500/3500 5.9L 24V Cummins
Industrial PDM-160-1484S-24 95LB Valve Springs | 2003-2007 Dodge RAM 2500/3500 5.9L 24V Cummins

Industrial Injection

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

SKU: IISPDM-160-1484S-24
$381.45
$401.53
Industrial 24EE02 Stage 3 Chromoly Pushrod | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins
Industrial 24EE02 Stage 3 Chromoly Pushrod | 1998.5-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Industrial Injection

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

SKU: IIS24EE02
$36.81
$38.75
Carli CS-DCMM Chromoly Motor Mounts | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins
Carli CS-DCMM Chromoly Motor Mounts | 2003-2007 Dodge RAM 2500/3500 5.9L Cummins

Carli Suspension

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

SKU: CISCS-DCMM
$550
Carrillo DH7107PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 Dodge RAM 6.4L HEMI
Carrillo DH7107PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 Dodge RAM 6.4L HEMI
Carrillo DH7107PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 Dodge RAM 6.4L HEMI
Carrillo DH7107PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 Dodge RAM 6.4L HEMI

Carrillo

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

SKU: CRLDH7107PRKH-64-HDSET
$5,084.10

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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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