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The fuel tank sizes are true for the 4-cylinder and 6 cylinder (respectively). But my 4.7 has a 24 gallon tank and I'm pretty sure all the V8s had 24 gallon tanks.
To add to this when I was doing my fuel pump, the part# is stamped on the bottom of the gas tank. You can look it up anywhere and it tells you the capacity.
i see that the 3.7l isnt included, do you happen to know the quantities on it? the 2004 model dakota didnt have the 3.9l v6, they came with the newer 3.7l
2.5L : 9.8 qts. (2.45 Gallons) 3.9L : 14.0 qts. (3.5 Gallons) 4.7L : 17.0 qts. (4.25 Gallons) 5.9L : 14.3 qts. (3.575 Gallons) (5.2L Is most likely close to 14.3 qts)
I just recently replaced my water pump in the 4.7. I replaced hoses and such. This shows about 4 gallons.
Mine seems full at just over 2 gallons. Is just over 2 gallons possibly correct if there is variances in radiator sizes?
That 4 and change gallons is for the ENTIRE cooling system. That includes all the hoses, the heater core, and the engine itself. Make sure you bleed all the air out of the system, and it'll be fine.