Upgrade your 2011–2016 GM Duramax’s range and reliability with this 60-gallon Titan XXL mid-ship replacement tank, engineered specifically for 2500/3500 Crew Cab long bed trucks with 8 ft beds and one- or two-piece driveshafts. Built from ultra-tough, cross-linked polyethylene, it nearly doubles your fuel capacity without sacrificing ground clearance or towing hardware.
Direct-fit mid-ship replacement for 2011–2016 Silverado/Sierra 2500HD & 3500HD, Crew Cab 8 ft long bed, Duramax diesel only.
XXL 60-gallon capacity (24 gallons more than stock 36-gallon tank) for extended driving range.
Military-grade cross-linked polyethylene construction resists corrosion, impacts, and off-road abuse.
Uses factory sending unit; maintains accurate fuel gauge and OE emissions integration.
Includes mounting straps, Crew Cab front support, rubber bushings, and hardware for a clean install.
Hangs only about 1.5 in. below the stock shield and ~2 in. deeper than OEM tank for excellent clearance.
Compatible with FASS, AirDog, Fleece and other popular lift pump systems.
Made in the USA and backed by Titan’s lifetime warranty on the tank.
This Titan 60-gallon XXL mid-ship fuel tank is a direct underbody replacement for the OEM tank on 2011–2016 Chevrolet Silverado and GMC Sierra 2500/3500 HD Duramax trucks equipped with a Crew Cab and Extended Cab with an 8 ft long bed. Designed around the factory frame and driveline, it fits trucks with either a one-piece or two-piece driveshaft, and includes a front support assembly specifically for one-piece driveshaft applications.
Capacity jumps from the factory 36 gallons to a massive 60 gallons, giving you up to 24 extra gallons for towing, hauling, and long-distance trips with fewer fuel stops. The tank is built from military-grade cross-linked polyethylene (XLHDPE), which will not rust, is far more impact-resistant than steel, and prevents corrosion-related fuel contamination. It hangs roughly 1.5 inches lower than the stock shield and is only about 2 inches deeper than the OEM tank, preserving ground clearance and departure angle for work or off-road use.
Installation reuses your truck’s stock sending unit, so the factory fuel gauge and pickup systems function as intended with no tuning or extra electronics. If you’re running an aftermarket lift pump or filtration system such as FASS, AirDog, or Fleece, this tank is designed to work with those systems without modification. Every tank includes new powder-coated or plated steel mounting straps, the Crew Cab front support, rubber isolator bushings, and all necessary accessories for a professional fit.
2011–2016 Chevy Silverado 2500HD / 3500HD Duramax, Crew Cab & Extended Cab with an 8 ft long bed.
2011–2016 GMC Sierra 2500HD / 3500HD Duramax, Crew Cab & Extended Cab with an 8 ft long bed.
For diesel fuel only; not approved for gasoline.
Fits single and dual rear wheel (SRW/DRW) models with one- or two-piece driveshafts.
Titan backs this tank with a lifetime warranty against defects in materials and workmanship, reflecting the durability of its cross-linked polymer construction. Normal wear items, installation labor, and damage from misuse, improper installation, or contamination are not covered.
Q: Will this tank fit my truck if it’s an Extended Cab or different bed length?
A: This specific tank is engineered for 2011–2016 GM 2500/3500 Crew Cab and Extended Cab trucks with 8 ft long beds, different bed length trucks require a different part number.
Q: Do I need a new sending unit or special fuel level module?
A: No, this tank is designed to reuse your factory sending unit so your fuel gauge remains accurate and OE functions remain intact.
Q: Is ground clearance reduced?
A: The tank hangs about 1.5 inches below the bottom of the stock shield and is roughly 2 inches deeper than the OEM tank, which preserves very good clearance for daily use and towing.
Q: Can I run this tank with my FASS or AirDog system?
A: Yes, Titan mid-ship replacement tanks are compatible with popular aftermarket lift pumps and fuel systems, including FASS, AirDog, and Fleece.
Q: Is this tank safe for gasoline?
A: No, this model is for diesel fuel only and is intended for Duramax-equipped trucks.
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