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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Mishimoto MMHOSE-RAM-03DBK Black Silicone Coolant Hose Kit | 2003-2010 Dodge RAM 2500/3500 5.9L/6.7L Cummins
IN STOCK
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
$199.95
$220
SAVE $20.05
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
$1,364.74
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
$1,364.74
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
$1,364.74
Industrial PDM-160-1484S-24 95LB Valve Springs | 2003-2007 Dodge RAM 2500/3500 5.9L 24V Cummins
IN STOCK
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
$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
$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
Carrillo DH7106PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 Dodge RAM 6.4L HEMI
Carrillo DH7106PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 Dodge RAM 6.4L HEMI
Carrillo DH7106PRKH-64 Hybrid Piston & Connecting Rod Kit | 1989-2007 Dodge RAM 6.4L HEMI

Carrillo

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

SKU: CRLDH7106PRKH-64-HDSET
$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

SKU: WCF100395
$58.20
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

SKU: COMPRO3002B
$206.46
$222
SAVE $15.54
Fleece FPE-61-10006 Freedom Series Cylinder Head Performance | 1994-2007 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-61-10006 Freedom Series Cylinder Head Performance | 1994-2007 Dodge RAM 2500/3500 5.9L Cummins
Fleece FPE-61-10006 Freedom Series Cylinder Head Performance | 1994-2007 Dodge RAM 2500/3500 5.9L Cummins

Fleece Performance Products

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

SKU: FLCFPE-61-10006
$3,750
Hamilton Cams 07-C-178/208S Towing Steel Cam | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
IN STOCK
Hamilton Cams 07-C-178/208S Towing Steel Cam | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Hamilton Cams 07-C-178/208S Towing Steel Cam | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Hamilton Cams

Hamilton Cams 07-C-178/208S Towing Steel Cam | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: HAM07-C-178/208S
$699
Gator Fasteners RBK59 Heavy Duty Rod Bolt Kit | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins
Gator Fasteners RBK59 Heavy Duty Rod Bolt Kit | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins
Gator Fasteners RBK59 Heavy Duty Rod Bolt Kit | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins
Gator Fasteners RBK59 Heavy Duty Rod Bolt Kit | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins

Gator Fasteners

Gator Fasteners RBK59 Heavy Duty Rod Bolt Kit | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: GTFRBK59
$124.99
Gator Fasteners MSK5924 Heavy Duty Main Stud Kit | 1998.5-2007 Dodge RAM 2500/3500 5.9L Cummins
IN STOCK
Gator Fasteners MSK5924 Heavy Duty Main Stud Kit | 1998.5-2007 Dodge RAM 2500/3500 5.9L Cummins
Gator Fasteners MSK5924 Heavy Duty Main Stud Kit | 1998.5-2007 Dodge RAM 2500/3500 5.9L Cummins
Gator Fasteners MSK5924 Heavy Duty Main Stud Kit | 1998.5-2007 Dodge RAM 2500/3500 5.9L Cummins
Gator Fasteners MSK5924 Heavy Duty Main Stud Kit | 1998.5-2007 Dodge RAM 2500/3500 5.9L Cummins

Gator Fasteners

Gator Fasteners MSK5924 Heavy Duty Main Stud Kit | 1998.5-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: GTFMSK5924
$259.99
Carrillo DH7104 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo DH7104 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo DH7104 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Carrillo

Carrillo DH7104 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: CRLDH7104SET
$2,463.30
$2,605.50
SAVE $142.20
Carrillo DH7102 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo DH7102 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo DH7102 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo DH7102 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Carrillo

Carrillo DH7102 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: CRLDH7102SET
$2,463.30
$2,605.50
SAVE $142.20
Carrillo DH7100 High-Performance Single Piston | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo DH7100 High-Performance Single Piston | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Carrillo

Carrillo DH7100 High-Performance Single Piston | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: CRLDH7100
$309.75
Carrillo DH7101 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo DH7101 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo DH7101 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Carrillo

Carrillo DH7101 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: CRLDH7101SET
$2,463.30
Carrillo D7104 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo D7104 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Carrillo

Carrillo D7104 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: CRLD7104SET
$2,463.30
$2,605.50
SAVE $142.20
Carrillo D7103 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo D7103 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo D7103 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Carrillo

Carrillo D7103 High-Performance Piston Set | 1989-2007 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: CRLD7103SET
$2,463.30
$2,605.50
SAVE $142.20
Carrillo CR_A59DC_0HS_7559B7H Connecting Rods | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo CR_A59DC_0HS_7559B7H Connecting Rods | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo CR_A59DC_0HS_7559B7H Connecting Rods | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins
Carrillo CR_A59DC_0HS_7559B7H Connecting Rods | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Carrillo

Carrillo CR_A59DC_0HS_7559B7H Connecting Rods | 1989-2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

SKU: CRLCR_A59DC_0HS_7559B7H
$2,885.57
Cometic C5597-070 ISB CR MLX Cylinder Head Gasket .070 inch Bore 4.100 inch | 2003-2008 Dodge RAM 2500/3500 5.9L Cummins
Cometic C5597-070 ISB CR MLX Cylinder Head Gasket .070 inch Bore 4.100 inch | 2003-2008 Dodge RAM 2500/3500 5.9L Cummins

Cometic

Cometic C5597-070 ISB CR MLX Cylinder Head Gasket .070 inch Bore 4.100 inch | 2003-2008 Dodge RAM 2500/3500 5.9L Cummins

SKU: COMC5597-070
$230.43
$256.03
SAVE $25.60
ARP 900-0400 4.040 Tapered Ring Compressor | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins
ARP 900-0400 4.040 Tapered Ring Compressor | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins
ARP 900-0400 4.040 Tapered Ring Compressor | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins

ARP

ARP 900-0400 4.040 Tapered Ring Compressor | 1989-2007 Dodge RAM 2500/3500 5.9L Cummins

SKU: ARP900-0400
$97.13

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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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