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Diesel Auxiliary Tank Install Kit
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Southern Truck Diesel Auxiliary Tank Install Kit

Diesel Auxiliary Tank Install Kit

Select your Vehicle

This product does not fit a
0.00 LBS
  • All Hoses and Hardware Included
  • Some Cutting May Be Required On The OEM Fuel Filler Hose/Neck
  • Designed To Work With A 3/8in NPT Female Tank Mounted Drain Fitting
  • A Shut-off Valve Is Built Into The Included 3/8in Mail Drain Fitting
  • If Shut-off Valve is To Be left Open Tight and Leak-Free Fuel Vehicle Fuel Cap Is Necessary
  • All Hoses, Clamps, and Hardware is Included
  • This System Is NEVER to be Used With Flammable Fuels Like Gasoline

Choose the appropriate kit for your truck and more than double your range between fuel stops.  Of course, Auxiliary Tanks are sold separately but we have a large variety of high-quality, DOT approved tanks available here.  

View Installation Instructions For:

RAM 2500 and 3500 Years 2013+ Kit Number 11408

Chevy/GMC 2500 and 3500 Years 1999-2010 Kit Number 11029

Multi-Brand Fit (see list below) Kit Number 11025

1999 - 2012 Dodge Ram 2500

1999 - 2012 Dodge Ram 3500

2011 - 2019 Chevrolet Silverado 2500

2011 - 2019 Chevrolet Silverado 3500

1999 - 2019 Ford F-250 Super Duty

1999 - 2019 Ford F-350 Super Duty

2011 - 2019 GMC Sierra 2500

2011 - 2019 GMC Sierra 3500 HD

Filler Neck Tee Specs.

11408 Aluminum Tee 1.50-inch Inner Diameter, 1.75-inch Outer Diameter

11029 Aluminum Tee 1.74-inch Inner Diameter, 2.0-inch Outer Diameter

11025 Aluminum Tee 1.38-inch Inner Diameter, 1.50-inch Outer Diameter

Since opening in 1963 Leonard Buildings and Truck Accessories' goal has always been to provide quality truck accessories at the lowest prices. Ford, Chevy, GMC, Dodge, Ram, Nissan, Honda, Jeep, and Toyota Truck owners may disagree on which vehicle brand is better but they can all agree that Leonard Truck Accessories is the perfect place to buy your Southern Truck Gravity Feed Fuel Kits.

Real truck lovers, off-roaders, or fans of anything auto, be a truck hero, and buy the best quality, best-reviewed, best priced Southern Truck products through Leonard Truck Accessories .



0.00 LBS
Southern Truck
Installation Time:
1 Hour
Sold As:
Chevrolet Silverado 2500
Chevrolet Silverado 3500
Dodge Ram 2500
Dodge Ram 3500
Ford F-250
Ford F-350
GMC Sierra 2500
GMC Sierra 3500
Ram 2500
Ram 3500
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