Auxiliary Fuel Tank Install Kit Diesel for 2013-Current Dodge Ram

In this review the Auxiliary Fuel Tank Install Kit is evaluated for diesel Dodge Ram owners who need a simple gravity-fed secondary tank connection. The kit's strongest point is its durable construction: aluminum fittings with rubber components that resist corrosion and keep fuel flowing without electrical pumps. For anyone running long hauls or wanting to extend range without frequent stops, this installation kit offers a straightforward solution that ties into the OE tank and controls fuel transfer by gravity.

Key Features

• Durable materials: Aluminum fittings and rubber components are used to prevent corrosion and prolong service life.
• Gravity feed design: Provides a stable gravity fuel supply that helps control the fuel level from the original equipment tank without extra pumps.
• Dodge compatibility: Designed for Dodge Ram 1500, 2500, 3500 models from 2013 to current for diesel engines, so fitment matches late-model trucks when the OEM part number lines up.
• OEM reference: Uses OE part numbers 11408 and 011408 to help buyers confirm compatibility with existing fuel system parts.
• Simple kit package: Supplied as a single set with the necessary components to install a 1 3/4' fill line connection and begin using an auxiliary tank.

Who It's For

This kit is aimed at diesel truck owners who want to add a gravity-fed auxiliary tank to a 2013 or newer Dodge Ram 1500, 2500, or 3500. It suits drivers who value corrosion-resistant fittings and a low-complexity installation to extend driving range or reduce fuel stops during extended trips or work runs.

It is not the right choice for gasoline engines or for users who require an electric pump or automated transfer system; technicians who need a perfect OEM fit should double-check the OE part number before purchasing to avoid fitment issues with hoses and metal fill parts.

Pros & Cons

Pros

• Built from aluminum and rubber to resist corrosion and deliver a long service life.
• Gravity-fed design keeps the system simple and avoids additional electrical components.
• Compatible with many Dodge Rams from 2013 and newer when matched to OE part numbers 11408/011408.

Cons

• Some users report the hose can be difficult to secure over metal fill parts, so extra care and clamps may be needed during installation.

Specifications

Product type	Auxiliary fuel tank install kit
Compatible vehicles	Dodge Ram 1500, 2500, 3500 (2013 - current), diesel only
OE part number	11408 / 011408
Fill line size	1 3/4' fill line
Materials	Aluminum fittings and rubber components
Package contents	1 set 11408 auxiliary fuel tank install kit

Our Verdict

The Auxiliary Fuel Tank Install Kit is a practical, well-built option for diesel Dodge Ram owners who need a straightforward gravity-fed connection to an auxiliary tank. With corrosion-resistant materials and clear OEM part references, it offers genuine value for long-distance drivers and fleet users, provided buyers confirm fitment and take care securing hoses over metal fill parts during installation.

Frequently Asked Questions

Will this fit non-diesel Dodge Rams?
No. This kit is specified for diesel engine models only and should not be used on gasoline engines.

How do I avoid fuel spillage during installation?
Use a tool to make the RDS fuel tank valve more closed during installation as recommended to reduce spillage risk.

What if the hose won't stay on the metal fill parts?
Some users report fitment tension; using proper clamps or checking hose orientation and OEM part match can resolve sealing issues.