Enhance the performance of your 1998.5-2002 Dodge Ram 2500/3500 5.9L Cummins with upgrades designed to boost power, improve airflow, and maximize fuel efficiency. Achieve optimal combustion with upgraded cold air intakes, fine-tune your engine with advanced tuners, and ensure steady fuel delivery with high-performance injectors. These enhancements ensure your Cummins-powered Ram is ready for any challenge, whether you're towing heavy loads or hitting the backroads.
Increase airflow for improved combustion and engine performance.
Get more control over your engine's power with cutting-edge tuning solutions.
Improve fuel efficiency and power with precision fuel delivery systems.
Upgrade the suspension of your 1998.5-2002 Dodge Ram 2500/3500 5.9L Cummins to enhance off-road capabilities, towing stability, and on-road comfort. Choose from leveling kits for a balanced ride, lift kits for added ground clearance, and shocks designed to handle rough terrains. These suspension upgrades provide better control, stability, and comfort, allowing you to drive confidently wherever the road takes you.
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The 1998.5-2002 Ram 5.9L Cummins are legendary trucks, that being said, these trucks can be enhanced with the right performance parts and accessories from Alligator Performance. We have a huge variety performance upgrades and parts that give your awesome 24V 5.9L Cummins more power and reliability to have it ripping around the street, sled pulling, or on the trail in practically no time at all. Our 24V 5.9L Cummins Engine Upgrades will seriously turn up the power on your truck. Our selection of 24V 5.9L Cummins Fuel Upgrades will help support your power levels, while our 24V 5.9L Cummins transmission upgrades will keep your transmission operating at its best when you throw on huge power. Check out our 24V 5.9L Cummins Turbo Upgrades to add impressive levels of horsepower and torque to your Ram 2500/3500. Ram Cummins Fitments: 1998, 1999, 2000, 2001, 2002 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.
The 5.9L Cummins Turbo Diesel in the 1998.5-2002 models produces 235-245 horsepower and 460-505 lb-ft of torque, depending on the specific model year and configuration.
At stock height, the largest tire size that generally fits is 33 inches on 16- or 17-inch wheels. Fitting 35-inch tires will typically require a leveling kit or trimming, especially on 4WD models.
The 5.9L Cummins 24-valve engine in this generation is highly reliable, often considered one of the most durable diesel engines produced. The 47RE automatic transmission, however, is less robust under heavy towing. The NV5600 6-speed manual is preferred for towing durability.
Drivers typically report 14-20 MPG from the 5.9L Cummins, with highway driving yielding the best results. Towing or heavy loads will reduce MPG to the lower end of the range.
The Ram 3500 can tow up to 13,900 pounds, depending on the configuration, while the Ram 2500 maxes out around 12,000 pounds when properly equipped.
The 5.9L Cummins 24-valve is highly responsive to performance upgrades. Gains of 100+ horsepower can be achieved with diesel tuners, cold air intakes, and exhaust systems. More aggressive power increases can be achieved with turbo upgrades and injectors.
There are many lift kits available, ranging from 2.5-inch leveling kits to 6-inch suspension lifts. Brands like Carli, BDS, and Rough Country offer solutions for better off-road performance and enhanced ground clearance. Now that these trucks have some age on them, we strongly recommend all rubber bushings, mounts, and steering components be checked and replaced before adding a lift, to ensure the best ride quality and safety.
The 5.9L Cummins engine is highly reliable, but some early long blocks still suffer from the so-called Killer Dowel Pin (KDP) issue. The 47RE automatic transmission is known to struggle with durability under heavy towing conditions and even stock torque figures. The VP44 fuel injection pump has some known weak points and can fail if the fuel system is not properly maintained.
With lift kits, off-road tires, and locking differentials, these trucks are very capable off-road. While the stock suspension is decent for light off-roading, aftermarket upgrades are common for more rugged terrain.
The Ram 3500 has a maximum payload capacity of 3,910 pounds, while the Ram 2500 can carry up to 2,750 pounds, depending on the configuration and equipment.
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