Adding a Larger Fuel Tank to a 2015-Plus Tundra
If you do a lot of driving or towing, you know how much of a pain it is making frequent stops to fuel up. This is especially true if you have a Toyota Tundra, like our test subject for this article. Our ’15 Toyota Tundra 4WD Crewmax TRD Pro came stock with a 26-gallon gas tank. Yep, you read that right, 26 gallons for a full-size truck.
To give you a reference point, we drove this truck from North Carolina to Texas towing a rather large enclosed car trailer that was loaded. We stopped for gas about ever hour and a half. What was usually a 16-hour trip each way became especially aggravating with all of the extra stops. Granted the truck has a 7-inch lift and 37-inch tires, which got us a whopping 7.5 mpg, so that didn’t help either. But even the stock Tundras don’t get much better gas mileage while towing.
After this trip, we knew we had to contact Transfer Flow and order one of its 46-gallon direct-replacement tanks (P/N 0800114225, $1,299 MSRP) before we took any more road trips. This fuel tank is installed in place of the factory tank, only hangs about an inch lower than stock, and doesn’t require any modifications. It uses all of the factory mounting points and fuel pump while retaining the stock gauge readings. Once it arrived, we scheduled the help of a couple of friends and set a date to install it.
Because the truck is lifted, we didn’t even need to jack it up to access the tank. We used a couple of floor jacks with some blocks of wood and hand tools in a home garage. Even though we BS’d quite a bit, just like every group of friends when they get together to turn wrenches, it still only took about three and half hours to swap tanks and get the truck running. If you can use a ratchet and a screwdriver and have a few extra sets of hands, you can easily manage this upgrade yourself.
Transfer Flow builds its replacement tanks to be very user friendly. Since the new tank has been installed we’ve made another long-distance trip hauling a car trailer. This time we managed to go as long as four hours between fuel stops, which was well worth the time and money it took to install the new tank. Check out the next few pages to see how simple it was to install the tank. ST