Our readers keep the lights on and my morning glass full of iced black tea. As an Amazon Associate, I earn from qualifying purchases.11 Best 100 Gallon Diesel Tank | Skip the Gas Station

Check Price on Amazon

The Titan 7010201 is a vehicle-specific midship replacement tank engineered for 2001–2010 Chevy/GMC 2500 and 3500 trucks with Duramax engines. Its military-grade cross-linked polymer construction eliminates welds and seams — the two failure points where conventional steel tanks eventually leak. Owners report an install time around three hours in a driveway, and the tank’s 52-gallon capacity doubles the factory range, cutting fuel stops in half when towing heavy trailers.

Real-world feedback shows the tank fits perfectly under a 6.5-foot bed with a gooseneck hitch, and the gauge integration works with the stock sending unit after a brief adaptation period. The polymer material holds up exceptionally well against road salt and debris, and one reviewer noted the tank is virtually indestructible after viewing the manufacturer’s drop-test video. The only recurring critique involves the aluminum mounting bracket — it does not flex, making bolt alignment finicky on certain frame configurations.

This is not a portable bed tank but an OE-style upgrade that replaces the factory tank outright. If your priority is maximizing total fuel capacity without sacrificing bed space, the Titan 7010201 is the gold standard. Pair it with a lift pump for added reliability, and you’ll have a towing rig capable of crossing entire states without a single fuel stop.

Check Price on Amazon

The AM-TANK 116-gallon diesel tank combines high-capacity polyethylene construction with a genuinely powerful 12V transfer pump rated at 12 GPM — the fastest flow in this lineup. The pump runs on a 300-watt, 22-amp motor with a 50% duty cycle and an IP55 weather resistance rating, meaning it can handle dust and water jets during roadside or job-site use. The 13-foot hose and A60 auto-nozzle make one-handed refueling clean and spill-free.

Practical design touches set this tank apart: integrated forklift pockets allow safe movement when fully loaded, while recessed ratchet-strap channels and lockable draw latches secure it during transport. The three-effect air vent in the filler cap manages pressure, vacuum, and prevents over-turning spills. Buyers in high-cost diesel states like California report the tank pays for itself within months by enabling bulk-purchase savings at wholesale fuel stations.

The main trade-off is that the tank is tall — roughly 31 inches at the highest point — so it probably won’t fit under a standard tonneau cover. Several owners also wish the pump had a separate pre-filter and water separator included. But for a dedicated portable transfer tank that can refuel a 240-gallon coach or a fleet of tractors with minimal waiting, the AM-TANK delivers unmatched throughput per dollar.

Check Price on Amazon

VEVOR’s entry into the bulk-fuel category delivers 116 gallons of diesel (or gasoline) capacity at a price that undercuts most competitors by a wide margin. The tank uses linear low-density polyethylene (LLDPE) — the same family of material found in industrial chemical containers — paired with a duplex filter system that catches large sediment on the intake side and fine particulates at the pump. The 10 GPM 12V pump is adequate for this capacity, and the automatic shut-off nozzle prevents the overfill mess that plagues cheaper setups.

Owner experiences confirm the tank is lightweight enough for one person to load when empty, thanks to grooved side panels that serve as handholds. The copper lock on the filler cap adds basic theft deterrence, and the mechanical fuel gauge — while not perfectly accurate per several reviews — gives a usable readout of remaining volume. Standout feedback includes a buyer who swapped the factory O-ring for a stiffer fuel-grade replacement to eliminate a minor weep at the pump connection.

Be prepared for some post-purchase tightening: multiple reviews mention loose fasteners and plastic shavings from the molding process that should be flushed before first use. The fuel gauge also reads optimistically, so tracking mileage-based consumption is wise. If you’re willing to spend thirty minutes on prep, this tank offers the best capacity-per-dollar ratio in the segment.

Check Price on Amazon

The JohnDow JDI-AFT58 is a 58-gallon auxiliary diesel tank built around a rugged linear polyethylene shell that weighs just 58 pounds empty — the lightest per-gallon ratio in this review. That low starting weight, combined with integrated forklift pockets and recessed ratchet-strap channels, makes it the most portable option for moving between a truck bed and a shop floor without a dedicated hoist. The included 12V pump delivers 10 GPM with a protective lockable cover, and the auto shut-off nozzle gets consistent praise for eliminating diesel spills during hurried fill-ups.

The tank’s compact footprint (37 by 24 by 26 inches) fits easily in a short-bed pickup, and owners report the dimensions leave enough room for toolboxes or a fifth-wheel hitch. JohnDow’s customer service is frequently highlighted — one reviewer noted excellent phone support when troubleshooting a minor fitment issue. The pump’s performance holds up well over extended use, though multiple buyers recommend adding an external water separator filter to protect injectors from condensation buildup inside the tank.

The biggest functional limitation is that the tank lacks a built-in filter, leaving you to add one aftermarket if you value engine protection. Several long-term owners also note that diesel foaming can occur during fast pumping, so a filter install is a smart upgrade. For a lightweight, user-serviceable transfer tank that won’t hog your truck bed, the JohnDow is a near-perfect middle-ground choice.

Check Price on Amazon

The RDS 72771 is a 60-gallon aluminum transfer tank purpose-designed to slide under a truck-bed tonneau cover while maximizing usable fuel storage. Its 55-by-20-by-12.75-inch profile fits below the bed rails of most full-size pickups, and the machined aluminum exterior will never rust — a critical advantage for owners in high-humidity or road-salt regions. The locking automotive-style fill cap provides basic theft protection, and the universal-fit mounting tabs make installation straightforward with the correct install kit.

Buyers consistently report the tank’s actual usable capacity is closer to 50–57 gallons due to the recessed fill port and internal baffle geometry, so factor that into your range calculations. On a 2011 F-250 the tank installed cleanly, and owners pairing it with an electric pump rather than relying on gravity feed saw much faster transfer times. The aluminum construction holds up well against UV exposure and temperature swings, with no corrosion reported even after years of outdoor use.

Installation requires drilling through the bed or cutting into factory bed liners on some trucks, and the included fuel-fill hose’s shut-off valve can slow gravity-based refueling to a trickle. Most owners add an aftermarket electric pump within the first few months. If a low-profile, corrosion-proof tank that preserves your tonneau’s weather seal is the priority, the RDS 72771 is the proven solution.

Check Price on Amazon

The Dee Zee DZ91753 is a 110-gallon rectangular transfer tank fabricated from 0.125-inch brite-tread aluminum — the same alloy used in heavy-duty truck bodies. The radius-curved corners eliminate weld pressure points where cracks typically start, and the non-rusting construction means you can leave it exposed to the elements year after year without degradation. One owner reported zero leaks after seven years of continuous outdoor service in Florida humidity, which speaks to the build quality.

The tank ships with a cap and vent coupler but no pump, so you’ll supply your own 12V transfer pump — a benefit for buyers who want to match their preferred flow rate or pump brand. At 95–100 pounds empty, it’s light enough for a single person to maneuver into a truck bed, and the inclusion of mounting tabs simplifies securing the tank. Customers emphasize this tank is for pump transfer only — the unit carries a label warning against gravity feeding into a vehicle’s fuel tank, so it’s not a legal auxiliary system for on-road use in some jurisdictions.

The sharp aluminum burrs inside the filler neck and cap threads require gloves during installation — a minor quality-control oversight. The tank also expands noticeably in warm weather, so leave headroom if filling to maximum capacity. For a long-term, corrosion-proof bed tank that pays for itself through wholesale diesel savings, the Dee Zee DZ91753 is a decade-plus investment.

Check Price on Amazon

The RDS 71790 is a 91-gallon alloy steel liquid transfer tank with a slim 57-by-20-by-19-inch footprint designed for long-bed trucks where maximizing bed space matters less than adding range. Its steel construction is heavier than aluminum — about 74 pounds empty — but offers superior resistance to dents and impacts during rough job-site use. The design allows gasoline auxiliary fueling if siphoned from the top using an electric pump, making it one of the more fuel-type-flexible options available.

Customers towing fifth-wheel campers love the tank for crossing long stretches without stopping, and the self-shut-off float valve gets frequent praise — one owner simply leaves the valve open and keeps fuel in the tank for automatic refills. Installation requires simple hand tools and a drill, and the universal mounting brackets fit a wide range of truck beds. The tank’s height is low enough to maintain rear visibility in many pickup configurations.

Quality control is the weak spot: multiple buyers received units with scratches, dents, or cosmetic welding marks inappropriate for the premium price tier. The alloy steel exterior will also rust if the paint is chipped, so immediate touch-up painting is recommended. If you need a high-capacity, impact-resistant tank and can accept some initial cosmetic flaws, the RDS 71790 delivers reliable performance once installed.

Check Price on Amazon

The Titan 5410050 is a 50-gallon fuel system replacement tank designed for direct installation on late-model diesel trucks, particularly Ford F-Series Super Duty models. The OE-style fitment means it bolts in place of your factory tank with no modifications to the bed or frame, preserving full bed space for tools or cargo. All necessary mounting hardware and the fuel pump module are included, and owners consistently report a four-hour driveway installation time.

The tank is molded from cross-linked polyethylene, which is seamless, weld-free, and completely resistant to corrosion — a major upgrade from the steel tanks factory-installed on many pre-2015 trucks. The financial return is strong: one buyer calculated a – per gallon savings by buying diesel at wholesale stations instead of highway truck stops, with the tank paying for itself in roughly two years. The included pump module is serviceable, though several owners find it underpowered and upgrade to a high-flow aftermarket pump.

Installation instructions include a paper template for cutting the bed floor, but the template alignment can be slightly off — careful measurement against the bed rail rather than the front wall avoids unusable drill holes. The vent adapter also lacks barbs in some kits, creating a potential hose-slip safety risk that owners fix with an aftermarket vent. For a seamless, bed-space-preserving capacity upgrade, the Titan 5410050 is a well-engineered solution despite a few kit-level annoyances.

Check Price on Amazon

The Dee Zee DZ92556NSB is a 42-gallon steel transfer tank built around heavy-duty 14-gauge steel with radius-curved ends that eliminate weld pressure points — a design borrowed from Dee Zee’s premium aluminum line. Five internal stability baffles control fuel slosh during transport, and the tank includes a drain plug and mounting tabs for truck-bed installation. At 70 pounds empty, it’s heavier than polyethylene alternatives but substantially cheaper per gallon of storage.

Owners report the tank fits well under the bed lip of 2006–2013 Chevrolet Silverado models, using about 10 inches of bed length while leaving the majority of the bed usable. The single baffle at the fill neck can cause fuel to slosh back and cause leaks if the tank isn’t perfectly level — several buyers added a neck extension and modified the cap to resolve this. Gravity-fed refueling requires two separate lines, but the system works reliably once correctly plumbed.

The tank arrives with mounting tabs that are occasionally bent in shipping (easily straightened) and a drain fitting that doesn’t sit perfectly flush at the bottom, leaving a small residual fuel pocket. The steel shell is painted but not powder-coated, so scratches from loading will need touch-up paint to prevent rust. For a sub-mid-price steel tank that provides solid capacity for light farm or personal use, the Dee Zee DZ92556NSB delivers dependable value.

Check Price on Amazon

The BreAro 58-gallon transfer tank offers a compact HDPE body with an integrated 12V pump rated at 10.6 GPM and a 13.1-foot rubber hose, all bundled at a very accessible price point. The 360-degree swivel connector prevents hose kinking, and the auto shut-off nozzle eliminates messy overflows during daily equipment refueling. The built-in filter ensures clean fuel delivery straight to tractors, generators, and skid steers.

Customer feedback reveals the tank’s advertised 58-gallon rating is optimistic — the actual usable capacity is around 52 gallons, a shortfall that matters if you’re planning around a specific volume for a full work week. The HDPE shell is durable against typical farm abuse and weather, and the lightweight construction (under 50 pounds empty) makes it easy to slide around a shop floor. The included pump battery cable is long enough to reach a truck battery without an extension.

Owners note the pump switch feels cheap and the fuel gauge is not perfectly accurate, but neither issue prevents the system from functioning reliably for its intended use — refueling farm and construction equipment without the hassle of 5-gallon cans. The 58-gallon capacity may feel small if you’re used to 100-gallon units, but for a single-operator farm or small construction crew, it’s a practical, budget-friendly entry point into bulk fueling.

Check Price on Amazon

The ExploreHorizon 48-gallon transfer tank is designed as the entry point for anyone tired of lifting and toting 5-gallon diesel cans. Its heavy-duty polyethylene body resists dents, rust, and UV damage, while the included 12V electric pump pushes diesel at 10 GPM through a 13-foot rubber hose with a 360-degree swivel connector. The integrated fuel level indicator gives a visual read on remaining volume without opening the tank.

Buyers upgrading from jerry cans are overwhelmingly satisfied — the tank eliminates multiple daily trips to the pump and spills from overfilled cans. The compact 24-inch cubic shape allows easy placement in the corner of a truck bed, and the lightweight construction (65 pounds empty) means it can be lifted with pallet forks when full. The auto shut-off nozzle works reliably, preventing the back-splash mess that plagues cheaper nozzles.

The main risk involves quality consistency: one reviewer reported a leak after filling to 38 gallons, suggesting a potential seam or fitting defect in a small percentage of units. The switch on the pump also drew criticism for feeling flimsy. For users who need a small, affordable transfer tank for occasional farm or generator use — and are comfortable inspecting the unit before first fill — the ExploreHorizon delivers solid value at a low entry price.