For 2013–2024 RAM 2500 & 3500 4WD Cummins Diesel Trucks
Take your RAM diesel truck farther with the TITAN Gen 7 XXL 52-Gallon Replacement Fuel Tank—an advanced extra-capacity fuel system engineered for serious towing, hauling, overlanding, and long-distance driving. Designed specifically for 2013–2024 RAM 2500 and 3500 4x4 trucks equipped with Cummins diesel engines, this direct-fit mid-ship replacement tank dramatically increases fuel capacity while maintaining factory functionality and compatibility with many popular truck accessories.
Built from TITAN’s renowned military-grade cross-linked polyethylene construction, the Gen 7 XXL tank delivers exceptional durability, corrosion resistance, and long-term reliability that outperforms traditional steel and aluminum tanks. With innovative new Gen 7 features including fast-fill compatibility, universal fuel pickup integration, and optional transfer pump functionality, this fuel tank upgrade provides unmatched convenience and capability for diesel truck owners who demand more from their vehicle.
Key Features
- Massive 52-Gallon Usable Capacity – Adds approximately 21 gallons over the factory tank for extended range and fewer fuel stops
- Advanced Gen 7 Design – Includes compatibility for fast-fill vent systems, transfer pump kits, and high-performance fuel setups
- Military-Grade XLHDPE Construction – Extra-heavy-duty cross-linked polyethylene resists corrosion, impacts, and harsh operating conditions
- Direct Bolt-In Installation – Engineered specifically for RAM 2500 and 3500 4WD Cummins trucks with no cutting or fabrication required
Features & Benefits
The TITAN Gen 7 XXL Replacement Fuel Tank represents the next evolution in diesel truck fuel system upgrades. Specifically engineered for 2013–2024 RAM 2500 and 3500 Crew Cab Short Bed 4x4 trucks with Cummins diesel engines, this system increases usable fuel capacity from the factory 31-gallon tank to a full 52 gallons, giving drivers significantly more range between fuel stops.
Whether you tow heavy trailers, travel cross-country, work in remote areas, or simply want greater convenience during daily driving, the TITAN XXL tank helps reduce downtime while improving confidence on the road. Unlike auxiliary fuel systems that consume valuable bed space, this mid-ship replacement tank installs in the factory tank location, preserving full truck bed usability and maintaining a clean factory appearance.
Constructed from TITAN’s proprietary High-Density Cross-Linked Polyethylene (XLHDPE), the Gen 7 tank is engineered to outperform conventional metal fuel tanks in nearly every category. The extra-thick polymer construction provides exceptional resistance to impacts, corrosion, cracking, rust, and environmental wear while remaining flexible enough to absorb impacts without permanent deformation.
Because the tank is molded rather than welded, there are no seams or weld points that can fatigue or fail over time. TITAN backs this advanced construction with a Lifetime Warranty, reinforcing its reputation for long-term durability and reliability.
The Gen 7 design introduces several important upgrades for diesel truck owners seeking maximum versatility. The system supports a fast-fill vent kit for smoother fueling at high-flow commercial truck stop pumps, a universal pickup tube compatible with high-pressure aftermarket fuel systems, and optional transfer pump kit functionality that allows you to fuel other vehicles or equipment directly from the tank.
TITAN’s exclusive low fuel trap design ensures all 52 gallons remain usable fuel capacity rather than advertising inaccessible reserve volume. Additionally, the tank maintains excellent ground clearance with only approximately 2 inches of additional hang-down below the factory tank location.
The included, black-coated galvanized steel mounting straps provide long-term corrosion resistance and secure support, while compatibility with aftermarket fuel systems like Fleece, AirDog, and FASS makes this tank ideal for performance and towing applications.
Fuel Gauge & Distance-to-Empty Information
Fuel Gauge Accuracy
Your factory in-dash fuel gauge will continue to operate accurately after installation. Because the TITAN tank holds more fuel than stock, the gauge will remain on “Full” longer before beginning to decrease.
Distance-to-Empty (DTE) / Range Display
Programming is not required for proper operation. However, owners who want the truck’s Distance-to-Empty display to reflect the larger tank capacity can update the vehicle computer using compatible programming tools.
Programming Options
- 2019–2024 RAM Trucks: Compatible with AlfaOBD software for updating DTE calculations
Third-party software and programming tools are independent of TITAN Fuel Tanks.
Installation Information
The TITAN Gen 7 XXL Tank is designed as a direct-fit replacement for the factory fuel tank with no drilling, cutting, or fabrication required for standard installation. According to the installation guide, the tank is specifically engineered for 2013–2024 RAM 2500 and 3500 Crew Cab Short Bed 4x4 trucks with Cummins diesel engines.
Vehicle Fitment:
- 2013–2024 RAM 2500 & 3500
- 4WD models only
- Crew Cab
- Short Bed (6 ft. 4 in.)
- Cummins diesel engines only
Important Fitment Notes:
- Does NOT fit 2WD trucks
- Does NOT fit cab & chassis models
- Not compatible with trucks factory-equipped with the optional 48/50-gallon OEM RAM tank
- Designed only for traditional pickup truck short beds
Installation Features:
- Direct bolt-in replacement design
- Uses factory/OE sending unit
- No cutting, drilling, or fabrication required
- Reuses OEM mounting hardware in several areas
- Compatible with many aftermarket fuel systems and accessories
Required Tools Include:
- Ratcheting socket driver
- SAE and metric sockets/wrenches
- Torque wrench
- Screwdriver and pliers
- Mallet or small hammer
Optional installation tools include a hydraulic transmission jack, impact wrench, and vehicle lift for easier installation.
Additional Installation Notes:
- Driver-side rear wheel and fender liner removal may be required for access during installation
- Propeller shaft removal is recommended for easier access
- The included TITAN O-ring and Torque Ring locking ring ensure proper sealing of the OEM sending unit
- Installation concludes with filling the tank completely and checking for leaks
Gen 7 Accessory Features:
- The Gen 7 system also supports optional accessory kits such as:
- Fast Fill Vent Kit
- Universal Pickup Tube & Return System
- Transfer Pump Kit
Accessory installation procedures are outlined in the included installation guide.
What’s Included
- TITAN Gen 7 XXL 52-Gallon fuel tank body
- TITAN Torque Ring locking top ring
- TITAN O-ring seal
- Front tank strap
- Rear tank strap
- Black-coated galvanized mounting hardware
Care & Maintenance
The TITAN XXL tank is engineered for low-maintenance durability and long-term performance.
Recommended Maintenance:
- Periodically inspect mounting hardware and fuel connections
- Clean exterior surfaces using mild soap and water
- Avoid abrasive cleaners or harsh chemicals
- Inspect vent hoses and fittings during routine maintenance intervals
- Verify clamps and connections remain tight after installation
The corrosion-resistant XLHDPE construction eliminates concerns about rust or corrosion over time.
Warranty Details
The TITAN Gen 7 XXL Replacement Fuel Tank is backed by a Lifetime Warranty for long-term confidence and peace of mind.
Warranty Coverage Includes:
- Manufacturing defects
- Material defects
- Structural integrity under normal operating conditions
Warranty Exclusions Include:
- Improper installation
- Misuse, abuse, or modifications
- Damage caused by accidents
- Use with non-approved fuels
According to TITAN’s warranty requirements, the product must be registered within 60 days of receipt for warranty coverage to remain valid.
Terms to Know
- XLHDPE (Cross-Linked Polyethylene): A military-grade engineered polymer known for exceptional impact resistance, flexibility, and corrosion resistance.
- Direct-Fit Replacement Tank: A fuel tank designed to replace the factory tank without requiring vehicle modifications or fabrication.
- Low Fuel Trap Design: An internal engineering feature that helps maximize usable fuel capacity.
- Torque Ring Locking Ring: TITAN’s specialized locking ring system designed to securely retain the factory sending unit.
- Fast Fill Vent Kit: An accessory system that improves fuel flow and venting during high-speed refueling at truck stop pumps.
- Universal Pickup Tube: A fuel system connection designed to work with high-performance aftermarket fuel systems.
Whether you tow heavy equipment, travel long distances, or need dependable extra fuel capacity for demanding diesel applications, the TITAN Gen 7 XXL 52-Gallon Replacement Fuel Tank delivers the durability, range, and advanced functionality serious RAM truck owners expect. Built for real-world performance and engineered to last, it’s the ultimate fuel system upgrade for maximizing your truck’s capability.