Best Auxiliary Fuel Transfer Tanks in 2026

Feed Diesel Directly Into Your Fuel Line from Your Truck Bed

All Hoses and Hardware Included

Some Cutting Required On The OEM Fuel Hose

1.Only for diesel

2.Designed to Work with 3/8-Inch Female Pipe Thread Drain Fitting

3.Compatible with Ford & Dodge 2012&older，Also Compatible with Chevy/GMC 2011&newer

RDS offers a full assortment of tanks in various capacities and dimensions to fit your needs

Gasoline auxiliary fueling is allowed, if siphoned from the top of the tank by using an electric fuel pump

🚙EASY TO INSTALL: The auxiliary fuel kit used to connect the RDS tank to the truck is for diesel fuel only. The diesel installation kit is easy to install and provides a stable gravity fuel supply to control the fuel level from the OE tank.

🚙 KIT INCLUDES:REDROCK PERFORMANCE RDS Auxiliary Fuel Tank Kit is designed for 3/8" female fuel outlet fittings. The auxiliary fuel tank install kit includes fittings, hoses and clamps, as well as the required hoses and hardware. Compatible with Ford & Dodge 2012&older, Chevy/GMC 2011&newer.

🚙UNIQUE DESIGN: The black tube surface is electrophoresis treated, which looks more shiny and effectively prevents corrosion. The aluminum valve is also oxidized in its original color. The threads are also made stronger by adding anti-seize.

All Hoses and Hardware Included

Some cutting Required on the OEM Fuel Hose

Designed To Work With a 3/8" Female Pipe Thread Drain Fitting

Large 36-gallon capacity

Overfill restriction provides automatic shutoff at the pump to prevent spilling

Built-in baffles add strength and prevent contents from shifting during transport

Highly Robust Construction: Capacity: 58 Gallon; Flow Rate: 40 GPM. Color: Black. Made of durable polyethylene material, the portable diesel tanks are resistant to structural damage, changing weather conditions, and UV radiation. Such material can effectively extend the service life of the diesel fuel tank.

58 Gallon Diesel Tank: The portable diesel tank has a well-designed structure. Two valves are provided for pressure release, and a 13.1 ft delivery hose facilitates remote power use. The mechanical clock gauge displays the level of diesel in the tank. Besides, a 12V pump with a 40 GPM flow rate, battery clamps, and a lockable cover are also included.

Automatic Dispensing Nozzle: Made of premium aluminum alloy and PVC material, this automatic fuel nozzle features a smooth surface and sturdy construction. There is no chemical reaction between nozzle and oil, so it will not get corrosion or tarnishing, which ensures a long service time.

Facilitates convenient transfer of fuel

Machined from extra heavy-duty aluminum tread plate

Includes a lockable cap, coupler which allows venting and a recessed drain plug

✔️ AUXILIARY FUEL TANK INSTALL KIT is designed to be used with DIESEL VEHICLES WITH a 1.5” FILL LINE. The kit is easy to install and provides a STABLE GRAVITY FUEL SUPPLY from the auxiliary tank to your diesel fuel tank. Turn your auxiliary fuel tank into a PORTABLE REFUELING STATION!

✔️ ELECTROPHORESIS-TREATED ALUMINUM TEE is corrosion-resistant and can handle years of use without wear. Threads on the roll-over valve are coated with ANTI-SEIZE AGENT to prevent thread galling between different materials. Seamlessly feed diesel directly into your fuel line! The kit is NOT MEANT TO BE USED FOR CONTINUOUS FUEL TRANSFER and can only be used with transfer tanks meeting federal DOT requirements.

✔️ SIMPLIFIED BRASS SHUT-OFF VALVE is included in the kit to easily start and stop diesel fuel transfer. Auxiliary diesel fuel tank installation kit REPLACES PART 11025 – 1.5” FILL LINE and helps you connect your auxiliary tank directly to your vehicle's fuel line. Refill your tank whenever needed! Flow valve MUST BE CLOSED during vehicle operation.

RDS offers a full assortment of tanks in various capacities and dimensions to fit your needs

Gasoline auxiliary fueling is allowed, if siphoned from the top of the tank by using an electric fuel pump

RDS offers a full assortment of tanks in various capacities and dimensions to fit your needs

Gasoline auxiliary fueling is allowed, if siphoned from the top of the tank by using an electric fuel pump

Fits: Auxiliary Tank Mounting Kit is designed for 3/8" female fuel outlet fittings. Compatible with Dodge 2013 & newermodels.

Easy to install: The auxiliary tank used to connect the tank to the truck is only for diesel. The auxiliary fuel tank is easy to install and provides a constant supply of fuel by gravel to control the fuel level of the OE tank.

Package includes: Kit includes fittings, hoses and clamps. As well as the required hoses and hardware.

Rugged linear polyethylene construction

12 volt transfer pump delivers fuel at 10 gallons per minute

Integrated forklift pockets for moving the tank when full

Material: made of high quality Aluminum & Rubber. Part number :11025

Work with 3/8-Inch female pipe thread drain fitting.

The auxiliary fuel tank is connected to the vehicle's fuel tank, if you use an electric fuel pump to draw gas from the top of the fuel tank, you can perform gasoline auxiliary fueling.

This Fuel Tank Install Kit is for Gravity Fueled Auxiliary Fuel Tank & Newer Models with 1½" Fill Line.

Work with a 3/8" female pipe thread drain fitting.Made of high quality Aluminum & Rubber.

The Diesel Installation Kit Fits for diesel-powered passenger truck sizes through vehicle models 350 or 3500 (not for use on diesel commercial/semi-trucks).

RDS Rectangular Transfer Fuel Tank

Can Transport Diesel Fuel, Gasoline, or Aviation Fuel

Can Gravity Feed Diesel Only

⛽Application: The Auxiliary Tank Mounting Kit with 3/8" NPT pipe fitting is designed to replace your drain fitting. Compatible with Dodge 2013 and newer models, only for diesel.

⛽Function: The auxiliary fuel tank install kit is designed to connect your auxiliary or transfer diesel tank to the fuel fill hose of your truck, so as to provide a steady gravity fuel supply and automatic control the fuel level from the OE tank.

⛽High Strength: Polished metal material with high temperature resistance and corrosion resistance. Textured joint make connection tighter. Rubber sleeves with clamps perfect fit factory hoses.

[Material]: aluminum alloy, brass, rubber.

[Applicable] This product is only applicable to diesel vehicles.

[Function]: The product is used to connect the RDS fuel tank to the auxiliary fuel kit of the truck, Provides a stable gravity fuel supply.This product can turn your auxiliary fuel tank into a portable gas station!

✔【GREAT COMPATIBILITY】The Diesel Auxiliary Tank Install Kit Compatible with Ford 1999-2022 Chevy GMC 2011-2022 Dodge 1999-2012, Compatible with Gravity Fueled Auxiliary Fuel Tank

✔【PRODUCT FUNCTION】 Diesel Install Kit is designed to connect your auxiliary or transfer diesel fuel tank to your truck's fuel fill hose.

✔【HIGH QUALITY】Diesel Install Kit is made of high-end materials​. The surface is treated with oxidation resistance, which greatly enhances the service life and is used more smoothly to ensure durability.