
The fuel tank capacity of a vehicle is an important consideration for drivers, as it determines how frequently they need to stop at the pump. Owners and enthusiasts of the 1997 F350 Ford truck have discussed the vehicle's fuel tank capacity in online forums, with some modifications available to increase the capacity.
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What You'll Learn
- The 1997 F350 long bed 4X4 has a 22-gallon front tank and 18.2-gallon rear tank
- Owners report difficulties filling the tank beyond 14 gallons
- Aftermarket options are available for larger fuel tanks
- The factory fuel tank can be replaced with a high-capacity tank
- Fuel tank hardware ensures the tank is securely installed

The 1997 F350 long bed 4X4 has a 22-gallon front tank and 18.2-gallon rear tank
The 1997 F350 long bed 4X4 has a 22-gallon front tank and an 18.2-gallon rear tank, according to the owner's manual. This means that the vehicle has a combined fuel capacity of 40.2 gallons.
It is important to note that some owners have reported discrepancies between the listed fuel tank capacities and their actual experience. For example, one owner of a 1997 F350 long bed 4X4 reported that they could never fill either tank beyond 14 gallons, despite the listed capacity being higher. This could be due to a variety of factors, including the design of the fuel tank, the fuel gauge accuracy, or other variables.
To resolve any potential issues with fuel tank capacity, some owners have chosen to modify their trucks to accommodate larger fuel tanks. This can involve purchasing a larger fuel tank that replaces the factory-installed one or adding an additional fuel tank to the bed of the truck. These options can provide increased fuel capacity, reducing the frequency of refuelling stops.
It is worth noting that modifying a vehicle's fuel tank capacity should be done with careful consideration and professional guidance. Ensuring that the fuel system is properly installed and maintained is crucial for safety and optimal performance.
In summary, the 1997 F350 long bed 4X4 has a substantial fuel capacity of 40.2 gallons, thanks to its 22-gallon front tank and 18.2-gallon rear tank. While some owners have reported discrepancies in fuel tank capacity, modifications can be made to upgrade to larger tanks. However, it is important to prioritise safety and consult experts when making any significant changes to your vehicle's fuel system.
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Owners report difficulties filling the tank beyond 14 gallons
Owners of the 1997 F350 crew cab have reported difficulties filling the tank beyond 14 gallons. This issue appears to affect both the front and rear tanks, with some owners reporting that they can only fill their tanks to around 14 gallons before the needle reads empty. This discrepancy between the listed tank capacity and the actual fuel intake has been a cause for concern for some drivers.
One owner of the 1997 F350 crew cab with a long bed reported that their truck's manual listed the front tank capacity as 19 gallons and the rear tank capacity as 18.2 gallons. However, they noted that they could never fill either tank beyond approximately 14 gallons. This experience seems to be shared by other owners of the same vehicle model, indicating that the issue may lie in the fuel gauge or another component of the fuel system.
Similarly, another owner of the 1997 F350 crew cab mentioned that their rear tank could hold about 14 to 15.5 gallons of fuel, but they started experiencing issues with the truck losing power when the fuel gauge read a quarter of a tank. They resolved the issue by switching to the front tank, but the problem persisted, suggesting that there could be a fault in the fuel pickup system or another mechanical issue causing the truck to lose power prematurely.
Owners of the 1997 F350 with the dual-tank option have also reported similar experiences. One owner mentioned that they switch tanks when the empty line hits, and they typically fill up around 14 gallons into each tank, even though the listed capacities are higher. This trend seems consistent across different variations of the 1997 F350, indicating that there could be a manufacturing discrepancy or a design issue affecting the fuel tank capacity and fuel gauge accuracy.
It is important to note that while these reports highlight a common difficulty in filling the tanks beyond 14 gallons, the root cause of the issue may vary between individual vehicles. Some potential factors could include fuel gauge sensitivity, fuel pickup system defects, or variations in tank manufacturing. In any case, owners experiencing issues with their fuel tanks are advised to consult with mechanics or automotive experts to diagnose and resolve the specific problems with their vehicles.
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Aftermarket options are available for larger fuel tanks
Owners of the 1997 F350 have a few aftermarket options for larger fuel tanks. The stock fuel tank capacity of the 1997 F350 is 19 gallons for the front tank and 18.2 gallons for the rear tank, totalling 37.2 gallons. However, some owners have reported that they can never get more than 14 gallons into either tank.
Aftermarket options for larger fuel tanks include:
- A 38-gallon Bronco tank, which requires modifying the factory pickup/sending unit to be longer and creating new slots for the tabs to hold it in place. This modification can increase the total fuel capacity to 60 gallons.
- Replacement Fuel Tanks from XDP, which offer high-capacity tanks that fit in the OEM location and are designed to replace the midship tank or be added to the bed of the truck. These tanks are available from Titan, S&B, or Transferflow.
- In-Bed & Auxiliary Tanks that are installed into the bed of the truck, providing a way to refuel without going to the pump directly.
When considering aftermarket fuel tanks, it is important to ensure that the tank is securely installed with the proper brackets and accessories, and that any modifications made to the factory components are done carefully and correctly to avoid issues such as air bubbles or siphon problems.
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The factory fuel tank can be replaced with a high-capacity tank
The 1997 F350 has a large fuel tank capacity, with a 19-gallon front tank and an 18.2-gallon rear tank, according to the owner's manual. However, some users have reported difficulties in filling the tanks beyond 14 gallons.
If you're seeking to enhance your fuel capacity even further, you can replace the factory fuel tank with a high-capacity option. XDP offers replacement fuel tanks that fit the OEM location, providing an upgraded, larger-capacity tank. They offer quality construction to withstand challenging driving and weather conditions, reducing the frequency of refuelling stops.
For those seeking an even more substantial upgrade, a 38-gallon rear tank conversion kit is available for the 1994-1997 F350, boosting the total fuel capacity to over 55 gallons when combined with the stock front fuel tank. This conversion kit simplifies the fuel system and ensures every drop of fuel is used, thanks to its sump design.
When considering a larger fuel tank, it's important to keep in mind potential modifications that may be required during installation, such as extending the return line and modifying the pickup/sending unit. Additionally, the frame rail's width must be measured to ensure compatibility with the new tank.
Upgrading to a high-capacity fuel tank not only extends your vehicle's range but also reduces the hassle of frequent refuelling stops, making it a valuable modification for the 1997 F350.
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Fuel tank hardware ensures the tank is securely installed
The fuel tank capacity of a 1997 F350 varies depending on the model variant. The 1997 F350 crew cab 4x4 is available with either a 19-gallon front tank and an 18.2-gallon rear tank or a 16.5-gallon front tank and an 18.2-gallon rear tank. However, some users have reported that the actual fuel capacity may be lower, with one user stating that they can only fill their tanks to around 14 gallons before the needle indicates empty.
To ensure your fuel tank is securely installed, you will need fuel tank hardware. This hardware includes the proper brackets, hoses, fittings, and installation parts necessary for a safe and secure installation. For example, the fuel tank hardware for a 1994-1997 Ford F250/F350 with a 7.3 Powerstroke Diesel Engine includes the necessary brackets for secure installation, and some tanks come with hardware to extend the fuel sender unit.
When purchasing fuel tank hardware, it is important to consider the quality and compatibility of the parts. For instance, all threaded fittings should be aluminum to prevent dissimilar metal corrosion. Additionally, some fuel tank manufacturers offer free shipping on hardware kits when purchased alongside a custom fuel tank.
It is also worth noting that there are options to upgrade your fuel tank to a larger capacity. This can be beneficial for automotive enthusiasts who want to make fewer stops at the pump or for those who need to replace their factory fuel tank. Larger-capacity fuel tanks are designed to fit in the OEM location or can be installed in the bed of your truck, providing a convenient way to refuel without having to go to a gas station.
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Frequently asked questions
The fuel tank capacity of a 1997 F350 varies depending on the model. The 1997 F350 long bed 4X4 has a 22-gallon front tank and an 18.2-gallon rear tank. The 1997 F350 crew cab 4x4 has a 19-gallon front tank and an 18.2-gallon rear tank.
The fuel tank capacity of a 1997 F350 long bed 4X4 is 22 gallons for the front tank and 18.2 gallons for the rear tank.
The fuel tank capacity of a 1997 F350 crew cab 4x4 is 19 gallons for the front tank and 18.2 gallons for the rear tank.
Yes, larger fuel tanks are available for the 1997 F350. Aftermarket options include larger-capacity replacement tanks that fit in the OEM location, as well as in-bed and auxiliary tanks that can be installed in the truck bed.


















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