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How big is the gas tank on a 2000 Dodge Ram 3500 diesel?

The typical factory fuel tank capacity for a 2000 Dodge Ram 3500 diesel is 34 gallons (about 129 liters).


In practice, capacity can vary by cab and bed configuration, and some trucks were equipped with dual-tank setups or aftermarket extensions that change total capacity. For a precise figure on a specific truck, check the build sheet, VIN, or the fuel-tank label on the vehicle.


Overview of tank capacity on the 2000 Ram 3500 diesel


The 2000 Ram 3500 diesel used the Cummins 5.9-liter inline-six and most commonly shipped with a 34-gallon fuel tank. While 34 gallons is the standard figure for many configurations, exact capacity can differ based on factory options and body style.


Factors that influence the exact capacity


The following items outline common factory configurations and what they imply for capacity:



  • Standard factory capacity: 34 gallons for typical single-tank configurations

  • Dual-tank or extended-range options: some configurations could use two tanks, increasing total capacity beyond 34 gallons

  • Aftermarket or custom installations: additional tanks can be added by owners or shops, further increasing capacity beyond factory figures


To confirm the exact capacity for your specific truck, consult the owner's manual, the build sheet, or the fuel-tank label near the filler neck.


Summary


For a 2000 Dodge Ram 3500 diesel, the standard factory fuel tank capacity is 34 gallons. Variations exist due to cab/bed configuration and optional dual-tank or aftermarket setups. Always verify the exact capacity on your particular vehicle using official documentation or direct inspection.

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Kevin Bennett

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Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.