Pack the most fuel into the least bed length with the Weather Guard 358-3-02 transfer tank. This 100 gallon rectangle tank uses a straight box shape instead of a stepped L, so it holds a full 100 gallons in a compact 46" footprint. It is built from baffled 12-gauge steel under a brite white ARMOR TUF powder coat, giving high-use crews serious range between fills without stretching down the whole bed.
What's Included:
- 100 gallon rectangle steel transfer tank
- Vented, lockable filler cap
- Steel bed-plate mounting hardware with rubber isolation bushings
- Reinforced filler neck and 2 in NPT pump port opening
- Weather Guard installation instructions
- Transfer pump, hose, nozzle and filter are sold separately
Features
Heavy 12-Gauge Steel Build
Every panel is formed from 12-gauge steel and joined with an overlapping edge design that reinforces the corners. It is built to survive the vibration, weight and rough handling that come with life in a work truck bed.
Brite White ARMOR TUF Finish
A brite white ARMOR TUF powder coat wraps the whole tank to fight rust, fading and chips. It shrugs off diesel spills, road salt and sun so the tank keeps looking sharp in the bed.
Baffled For Stable Hauling
Interior baffles slow the fuel down as you drive, so a full tank does not slosh and shove the truck around. Less fluid motion also means less stress on the tank over the long haul.
Vented, Lockable Fill Cap
The filler cap vents to prevent pressure build-up as diesel warms and moves, then locks to help keep your fuel secure on the jobsite or overnight.
Ready For Your Transfer Pump
A 2 in standard NPT port accepts most 12V diesel transfer pumps up to 30 pounds, and a 3/8" drain port makes service and draining easy. Add a pump, hose and filter to fuel equipment right from the bed.
Rectangular High-Capacity Design
The straight rectangular body packs a full 100 gallons into a compact 46" length, so you get maximum range in the least bed length. It sits crosswise against the bulkhead on rubber isolation bushings that cushion the mount and protect your bed.
Fitment & Compatibility
| Truck Class |
Example Trucks |
Fit |
| Full-size 3/4-ton and 1-ton |
F-250/F-350, RAM 2500/3500, Silverado/Sierra 2500HD/3500HD |
✓ Yes, ideal application |
| Full-size 1/2-ton |
F-150, RAM 1500, Silverado/Sierra 1500 |
✓ Yes, confirm bed space and payload |
| Mid-size and compact |
Ranger, Colorado, Tacoma, Frontier |
✗ Not recommended, verify bed space first |
Fit guidance: This is a full rectangular tank, not an L-shape, so it uses a straight box footprint about 46" long by 24" wide by 23" tall and holds a big 100 gallons. It sits crosswise against the front bulkhead of a full-size bed and takes up more bed depth than an L-shape tank but packs the most fuel into a compact length. Measure your bed and confirm clearance and payload before ordering. It is not recommended for mid-size or compact trucks.
Specifications
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Capacity: 100 gallons
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Shape: Rectangle
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Material: 12-gauge steel panels, overlapping edge design
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Finish: Brite White ARMOR TUF powder coat
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Exterior Dimensions: 46-1/4"L x 24"W x 23"H
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Baffled: Yes, interior baffles reduce fuel slosh
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Filler Cap: Vented and lockable
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Fittings and Ports: 2 in standard NPT pump port, 3/8" drain port
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Pump Compatibility: Accepts most 12V transfer pumps up to 30 lb (Severe Series tank required for heavier pumps)
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Approved Fluids: Diesel and hydraulic fluid only, not for gasoline or flammables
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Weight: About 151 lb (shipping weight)
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Mounting: Steel bed plate with rubber isolation bushings, hardware included
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Warranty: Limited Lifetime
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Made In: USA
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Mounting Method: Bolt-through bed mount, drilling required
Installation
Type: Bed-mount, bolt-in · Time: About 1 to 2 hours · Tools: Drill and bits, wrench or socket set, tape measure, marker, and zinc-rich primer to seal any drilled holes · Difficulty: Moderate, DIY-friendly with basic hand tools
Set the tank in place against the bed bulkhead, mark and drill the mounting points, then bolt it down through the steel bed plate using the supplied rubber isolation bushings so the tank is cushioned from the bed. Coat any drilled holes with zinc-rich primer to prevent rust, especially on aluminum beds. Install the filler neck and vented cap, then add your transfer pump, hose and filter. Follow the Weather Guard installation instructions for exact hardware placement.
Resources
Everything you need for your Weather Guard 100 Gallon Rectangle Steel Transfer Tank, Full-Size, Brite White, in one place.
Warranty, Shipping & Returns
Warranty. Limited Lifetime Warranty from Weather Guard against defects in materials and workmanship.
Free shipping. This item ships free to the lower 48 states. Because it is an oversized item, it ships by freight and typically arrives in 3 to 7 business days.
Inspect on delivery. Please inspect the packaging before signing. If you see any damage, note it on the delivery receipt and contact us right away, and we will make it right.
Compliance. The Weather Guard 100 gallon Rectangle is a bed-mounted transfer and storage tank rated for diesel fuel and hydraulic fluid only. Weather Guard's own safety labeling on the tank calls out diesel use only and warns against filling it with gasoline or any other flammable liquid, which creates an explosion risk in a vented steel transfer tank. It is not designed or approved to be plumbed into a vehicle's primary fuel system as an auxiliary supply tank. Fuel is moved with a 12V transfer pump through the 2 in NPT port rather than by gravity feed, and Weather Guard recommends running a filter when pumping. Weather Guard does not publish a DOT approval number for these transfer tanks, so treat it as a transfer and storage tank, not a DOT-certified auxiliary fuel tank. Rules for hauling and dispensing fuel vary by state and by the quantity carried, so the buyer is responsible for confirming legal, compliant use. Gasoline is never approved for this steel tank and should not be stored or transferred in it.
About Weather Guard
Weather Guard has built professional-grade truck and van storage in the USA for decades and is the storage brand tradespeople, contractors, and fleets reach for first. Its steel and aluminum tool boxes, ladder racks, and van-interior systems are engineered to survive daily jobsite abuse and keep expensive tools secure and organized.
Known for weather-tight seals, patented locking systems, and heavy-gauge construction, Weather Guard products mount cleanly on work trucks and vans and stand up to years of hard use. The lineup spans crossover, low-side, and saddle truck boxes, ladder and van racks, drawer units, and fuel and utility tanks, so an entire work vehicle can be outfitted from one brand.
Backed by a strong manufacturer warranty and US-based support, Weather Guard is the name pros trust to protect the tools their livelihood depends on.
Authorized Weather Guard dealer. Prestige Truck is an authorized dealer of Weather Guard, so every tool box, rack and storage product you buy is 100% genuine and factory-new, covered by the full Weather Guard manufacturer warranty, and backed by our own US-based support team.
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