SKU #: SB-10-1036 MPN #: 10-1036

S&B 56 Gallon High-Capacity Fuel Tank 11-26 GM 6.6L Duramax Crew Cab Short Bed

$1,449.00
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Description Overview
If your L5P GM Duramax fuel tank just does not cut it, this 62 gallon direct replacement tank will allow you to keep going down the road while others are stuck looking for fuel stations. S&B has thought of everything while developing this tank. They not only have almost doubles the fuel capacity but have done this all while maintaining maximum ground clearance and a hassle free installation. 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 PumpsBuilt 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 BarsDesigned 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.
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Please Note: This item is currently on backorder and is estimated to ship by November 13, 2026. Ship dates are subject to change.

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S&B's 62 gallon replacement fuel tank is a direct replacement for the factory tank, nearly doubling fuel capacity while maintaining maximum ground clearance.

Fits
2011-2023 6.6L GM Duramax LML/L5P
Brand
S&B
Best for
Increasing fuel capacity beyond the factory tank
Key features
  • Integrated swirl baffles to minimize fuel sloshing
  • 62 gallon capacity
  • Simple installation
  • Drain plug that can be drilled out and resealed if gas or DEF is accidentally added
Key specs
  • 62 gallon capacity

Summarized by AI from this product’s description and specs. Confirm fitment for your year, make and engine before ordering.

If your L5P GM Duramax fuel tank just does not cut it, this 62 gallon direct replacement tank will allow you to keep going down the road while others are stuck looking for fuel stations. S&B has thought of everything while developing this tank. They not only have almost doubles the fuel capacity but have done this all while maintaining maximum ground clearance and a hassle free installation.

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.

Manuals and Guides
Vehicle Fitment
2011-2026 GM 6.6L Duramax LML/L5P
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
FEATURES & BENEFITS:
  • Integrated swirl baffles
  • 56 Gallon capacity
  • Simple installation (typically 2-3 hours)
About S&B
Browse S&B Cold Air Intakes Online by Make, Model, and Year.

S&B Filters specializes in the manufacturing of high quality cold air intakes, air filters, intake manifolds, as well as other performance parts for light duty diesels to include Dodge Rams with a Cummins diesel engine, Powerstroke equipped Ford, and Chevrolet and GMC's with the hard working Duramax engine, as well as gas trucks and SUVs. With their combination of quality, performance, and affordability, they are one of our top picks when someone wants a recommendation for an air intake system.

Due in large part to the extensive amount of research and development S&B performs on every single part they produce, they are able to maximize airflow to deliver the biggest gains and have the simplest installation that nearly anyone can perform with basic hand tools. To reaffirm their commitment to build a quality product, S&B backs their air filters and intake kits with a one million mile warranty, as well as tests to meet or exceed ISO 5011 standards. S&B keeps their quality high and their pricing low by making almost everything themselves.

Browse S&B Fuel Tanks by Make, Model, and Year.

Many of today's modern diesels are equipped with puny fuel cells that require auxiliary, bed mounted systems to become almost mandatory for any of us traveling long distance, or simply don't want to fill up every other day. While there are options that exist on the market for replacement cells, none have gone to the extent that S&B Tanks has with features that the entire diesel market has been asking for. Similar to stock ground clearance? Check! Integrated fuel sump? Check? Easy installation? Absolutely! When you're ready to upgrade your truck's Distance to Empty, look no further than S&B Tanks.

Browse S&B Suspension by Make, Model, and Year.

For us Diesel Heads, our truck is more than just a way to get from point A to point B. They are part of our profession and lifestyle. When that's the case, you want to make sure that every mile you drive and every minute you spend in it is exactly what your looking for. Look no further than S&B Suspension's premium lift kits that combine strength, drivability, and performance into one package. You may know S&B for their filters and tanks but the same quality and look you are used to exist for their suspension systems as well.

Overall rating: 3.0 / 5 from 2 reviews.

AI Generated Review Summary

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Review highlights

Reviews

Full Tank for long trips

"Great product and an easy install. Product was shipped quickly and arrived with no concerns. Price was great compared to other sites. Only concern is GMC needs to fix the fuel gauge so it can read properly. I do have periods where I put 50 plus gallons in the tank and an hr later it drops to empty. The other issue is it reads as if it only ever has 32 gallons. Be excited to see fix for that when it comes around."

— Justin B. (5/5)

Fuel tank

"Told me the tank would be ready to ship in 4 days. Tank did not ship and staff was unable to notify me when it would be shipped. Asked for a refund and staff told me that process would take two weeks. Canceled the charge with CC company. Ordered a tank from 4 wheel truck parts was here in 5 days."

— Jeff B. (1/5)

Q&A

Will this fit a 2024 duramax?
Those tanks have not been confirmed to fit the 2024 models yet.
I just purchased mine and had it installed but noticed it didn’t come with the longer float like stated in the install videos . Do you have to order that separately? I have a 21 Denali 2500
These do not require longer floats, you should be able to transfer your factory sending unit into this tank. S&B state no drilling or special modifications required. -Mark
My 2023 GMC Denali 3500 crew cab short bed has DEF fill adjacenr to fuel fill. Is this compatible???
This tank will fir on the 2023 model. It is designed to take place of the factory tank and should not cause any issues. If you have further questions please feel free to call us. -Mark
How much lower does this tank sit compared to stock? How much ground clearance do you lose?
The S&B tank sits 3.75" lower than the stock tank. -Mark
Does this tank fit a 2009 GMC Sierra HD and does it come with ALL the necessary mounting hardware?
This will not fit that year range of truck unfortunately. The only fuel tank that covers that year range for a crew cab short bed would be part number 10-1006 (as long as your truck is a crew cab short bed.) -Mark