When you're on the road hauling heavy loads, fuel capacity isn't optional—it’s essential. That’s why upgrading your semi truck fuel tank can make a real difference. Whether you’re looking to replace a damaged tank or increase your diesel range, we’ve got the options to keep your rig rolling farther with fewer fill-ups.

Why Upgrade Your Semi Truck Fuel Tank?

Swapping out your old tank for an aftermarket diesel fuel tank isn’t just about looks. It’s about efficiency, durability, and fit. Here's what you get:

More miles between stops

– Upgrade to a bigger tank size and haul longer without pulling off the road to refuel.

Better fuel management

– Choose from tank sizes that match your engine needs, load weight, and route demands.

Direct-fit compatibility

– Designed to line up with your existing frame rails and mounting points.

High-quality aluminum construction

– Lighter than steel and built to resist corrosion, road debris, and years of wear.

DOT-compliant, industry-tested options

– You know they’re safe, reliable, and ready for your fleet or solo operation.

Tank Sizes and Configurations That Work for You

Get your tank size measurements BEFORE you buy your replacement tank. That’s why we carry a wide range of aluminum fuel tanks built for different makes, models, and use cases: - Single or dual-tank setups - Tanks ranging from 50 gallons to 150+ gallons - Options for driver or passenger-side mounting - Multiple diameters and lengths to fit your truck’s frame Not sure how much fuel your tank should hold? It will depend on your average fuel consumption, the weight of your load, and how many miles you drive between fill-ups. Our team can help you find the best tank upgrade.

Things to Consider When Buying a Diesel Fuel Tank

Before you buy, keep these key points in mind:

Fitment:

Check your current tank specs—diameter, length, location, and strap style.

Capacity vs. weight:

Bigger tanks mean more diesel, but also more fuel weight. Balance your fuel needs with what your truck can handle.

Tank material:

Aluminum is lighter and more rust-resistant than steel. It also holds up well against road salt, dust, and water.

Installation and mounting:

Know if you need to move brackets, extend fuel lines, or add new straps or rubber isolators.

Built for All Kinds of Class 8 Semi Trucks

We carry replacement fuel tanks for most heavy-duty brands—Volvo, Freightliner, International, Kenworth, Peterbilt, and more. Whether you’re running one tank or two fuel tanks, we’ve got options that meet OEM specs and are ready to install. Looking for more protection? Get a semi truck fuel cap. Getting a larger fuel tank? You’ll need a larger fuel tank bracket to keep it secure.

Stay Fueled. Stay on Course.

Every minute spent fueling up is time off the road. With the right aftermarket semi truck fuel tank, you’ll get the range, durability, and peace of mind that truckers rely on. Browse our selection of high-capacity diesel fuel tanks for sale and find the perfect fit for your rig.