HAULK DEPOT

70387 - Auxiliary Fuel Tank – 40 Gallon Aluminum – DOT Approved | RDS

Name: 70387 - Auxiliary Fuel Tank – 40 Gallon Aluminum – DOT Approved | RDS
Brand: HAULK DEPOT
SKU: AFT-40G
Price: 900.0 USD
Availability: OutOfStock

SKU: AFT-40G

$900.00 USD ~~$1,035.00 USD~~

Sale 13.04% $135.00 USD (13.04%)

Shipping calculated at checkout.

Out of stock

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*Some exclusions may apply

Some of our products are backed by a 1-year limited manufacturer warranty covering defects in materials and workmanship under normal use. If you experience any issues during this period, we’ll work with you to repair, replace, or resolve it according to warranty terms.*

*Proof of purchase required

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Description

This 40-gallon aluminum auxiliary fuel tank by RDS is built for durability, compliance, and extended range. Designed for diesel use in fifth-wheel and long-haul truck setups, this DOT-approved tank offers an excellent solution for increasing fuel capacity. It features a front corner fill, internal baffles, and full integration support with return, drain, and withdraw fittings.

Detailed Information:

Manufacturer	RDS Manufacturing
Capacity	40 Gallons (Approx. 95% Usable)
Material	Aluminum
Mounting Brackets	Included
Fill Location	Front Corner
DOT Compliance	Yes

Fitting:

Designed for fifth-wheel and other long-range diesel applications. Compatible with RDS Diesel Install Kits (sold separately). Includes withdraw, return, and drain ports for seamless fuel system integration. A blank plate is included for optional fuel pump or sending unit installation.

Features:

Extended Range: Adds 40 gallons of additional fuel capacity to your vehicle.
Built-In Baffles: Internal baffles reduce sloshing, improving safety and stability.
Leak-Tested: Pressure tested to ensure long-term reliability and fuel containment.
Corrosion-Resistant: Constructed from lightweight, rust-resistant aluminum.
Versatile Compatibility: Can be used with diesel, water, biofuel, and other approved liquids.
Overfill Protection: Filler neck design helps prevent spillage during refueling.

Interchangeable Part Numbers:

RDS-70387

Product Overview:

The RDS 40-Gallon Aluminum Auxiliary Fuel Tank is a rugged, DOT-compliant solution for expanding your fuel range on long trips. Ideal for heavy-duty and fifth-wheel setups, this notched rectangular tank features all necessary fittings for easy system connection and comes ready for installation with mounting hardware. A smart choice for truck owners, fleets, and anyone needing extended travel capacity.