S&B - 56 Gallon Replacement Fuel Tank - 2011-2026 GM 6.6L Duramax CC/SB - 10-1036

Part # 10-1036

OE Footprint. 2x The Fuel.

Designed to fit like factory while delivering nearly double the fuel capacity, the S&B 56-Gallon Tank gives your Duramax the range to go farther between fill-ups. Built to utilize the OE footprint, this high-capacity tank maintains ground clearance and integrates cleanly with your truck—perfect for towing, road trips, and long days on the job.

Compatible with High Flow Fuel Pumps

Built for faster fill-ups, the S&B 56-Gallon Tank is designed to work with high flow fuel pumps commonly found at commercial fueling stations. The integrated oversized fill neck helps reduce pump shutoff issues and allows fuel to flow smoothly into the tank, getting you back on the road quicker.

Engineered to work with S&B Traction Bars

Designed with performance builds in mind, this 56-gallon high-capacity fuel tank is fully compatible with S&B Traction Bars—giving you the clearance and fitment needed without compromise. Whether you're towing heavy, launching hard, or daily driving, the tank and traction bars work together seamlessly to maximize strength, stability, and fuel capacity. No cutting. No guesswork. Just a clean, integrated fit built specifically for your GM Duramax.

Important Notes:  The nozzle at high-flow fuel stations (truck stops)  WILL  be able to fill automatically.

Fuel Gauge Operation:

• The distance to empty (DTE) on GM trucks can’t be reprogrammed, so it will show about half the mileage that is really left. You can multiple the displayed range by 2 to find your actual range.
• The fuel gauge will operate properly. The fuel gauge will remain on full until about 4-5 gallons have been used and then the gauge will start to move normally. 
• The bottom of the S&B tank has more surface area than the OE, so there will be a greater fuel reserve when the low fuel indicator comes on.

Do you have an Auxiliary Fuel Tank?  Read why  using these with our tanks will void the Lifetime Warranty.