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The 1998.5–2002 5.9L Cummins introduced the VP44 injection pump, a major step forward in fueling technology that gave Dodge Ram 2500 and 3500 trucks smoother performance and improved efficiency. This 24-valve powerhouse is known for its reliability, tuning potential, and impressive towing capability, making it a favorite among diesel enthusiasts. Whether you’re replacing your VP44 pump, upgrading injectors, or adding performance parts, Thoroughbred Diesel has everything you need to keep your 5.9L Cummins running at its best.
Our selection of 1998.5–2002 Cummins 5.9L parts includes everything from factory replacements to performance upgrades. VP44 injection pumps and injectors are among the most in-demand products for this platform, and we carry trusted options from brands like Industrial Injection and BD Diesel. Many owners also choose performance tuners from Edge and Quadzilla, cold air intake systems from AFE and Banks, and exhaust upgrades to unlock more horsepower and torque. For added reliability, South Bend and Valair clutch kits are popular for manual transmission trucks, while FASS fuel systems, filter kits, and cooling system parts keep your Cummins running strong for the long haul.
Whether you daily drive a Ram 2500, tow with a Ram 3500, or are restoring a classic 24-valve Cummins, Thoroughbred Diesel has the parts and expertise to support your build. Shop by category, explore trusted brands, or check out our featured products below to find the best upgrades for your 1998.5–2002 Cummins-powered Ram truck.
Explore expert videos covering maintenance, VP44 injection pump replacements, and performance upgrades for your 1998.5–2002 Dodge Ram 5.9L Cummins. The Thoroughbred Diesel team shares insights to help you extend engine life and maximize power from your 24-valve Cummins.