Replacement Tanks

2010–2018 Dodge Ram 2500 & 3500 6.7L Cummins Heavy-Duty Auxiliary & Replacement Fuel Tanks

Double your driving range between fill-ups, eliminate the constant hassle of searching for diesel while towing heavy trailers, and upgrade your common-rail fuel storage capacity with premium 2010–2018 6.7L Cummins 4th Gen fuel tanks from Full Force Diesel. Heavy-duty Ram 2500 and 3500 trucks configured for long-distance hauling or commercial work frequently burn through factory fuel reserves rapidly, forcing frequent and inconvenient fuel stops. Factory polyethylene or steel tanks are often limited in volume, restricting your cross-country range. Upgrading to an engineered, high-capacity replacement mid-ship fuel tank or an auxiliary transfer system provides massive fuel storage that keeps your 4th Gen inline-six rolling for hundreds of extra miles.

High-Capacity Solutions: Oversized Mid-Ship Replacements and In-Bed Auxiliary Systems

Selecting the ideal fuel storage upgrade depends on your payload requirements, bed utilization, and long-haul driving habits:

• Oversized Direct-Fit Mid-Ship Replacement Tanks: High-capacity cross-linked polyethylene replacement tanks are engineered to drop directly into the factory factory location beneath your truck's cab and bed, replacing the restrictive stock tank with massive gallon capacity—often doubling your stock range. Because these tanks utilize the factory sending unit and mount cleanly within the chassis frame rails, they maintain your entire open bed space for fifth-wheel towing or cargo hauling without cluttering your floor.

• In-Bed Auxiliary Fuel Tanks and Transfer Combos: For extreme cross-country haulers requiring maximum fuel reserves, heavy-duty aluminum in-bed auxiliary tanks gravity-feed or electronically pump diesel directly into your primary tank while driving. Built from heavy-gauge diamond-plate aluminum, these auxiliary units integrate seamlessly with your fuel management system, allowing you to monitor and control fuel levels right from the cab.

Rugged Construction: Cross-Linked Polymers and Internal Baffle Security

Our selection of common-rail fuel storage components features premium materials engineered to survive harsh worksites and long highway miles:

• Puncture-Resistant Cross-Linked Polyethylene: Premium replacement tanks are manufactured from heavy-duty, military-grade cross-linked polyethylene (XLHDPE). This resilient material is completely impervious to diesel fuel corrosion, road salt, and extreme temperature swings, featuring thick walls that absorb heavy impacts from off-road debris without denting or cracking.

• Internal Baffling and Clean Installation: To prevent dangerous fuel sloshing and fluid momentum shifts during hard cornering or steep braking, our oversized tanks feature built-in internal baffling systems. Engineered with direct OE-style strap locations and complete hardware mounting kits, these tanks integrate smoothly with your factory fuel lines, sending units, and filler necks for a seamless, professional installation.

At Full Force Diesel, we carry the rugged, street-tested mechanical hardware and machine-shop-certified components your 4th Generation inline-six needs to remain completely dependable. Explore our complete selection of 2010–2018 6.7L Cummins 4th Gen high-capacity fuel tanks, oversized replacement mid-ship tanks, in-bed auxiliary storage systems, and heavy-duty mounting kits above to secure your truck's long-haul range today.