International LT Fuel Tanks

Frequently Asked Questions About International LT Fuel Tanks

What size fuel tanks are available for the International LT, and which models fit my truck?

International LT fuel tanks are available in capacities ranging from 70 to 150 gallons, with the most common sizes being 100, 120, and 150 gallons. These tanks are specifically designed for International LT models from 2017 to present. The 25-inch diameter tanks fit all LT configurations, while 23-inch options are available for trucks with specific frame rail spacing. Always verify your truck's OEM and current tank measurements before ordering, as tank compatibility can vary based on wheelbase and cab configuration.

Are these fuel tanks made of aluminum or steel, and what's the difference in durability?

Most aftermarket International LT fuel tanks are constructed from either polished aluminum or aluminized steel. Aluminum tanks typically weigh 40-50% less than steel equivalents and resist corrosion better, making them ideal for weight-conscious operations. Aluminized steel tanks offer superior impact resistance and are generally 20-30% less expensive than aluminum. Both materials meet DOT specifications and carry similar warranties, typically 1-2 years against defects. The choice often comes down to weight requirements and budget considerations.

What's involved in the installation process, and can I install it myself?

Installing an International LT fuel tank typically takes 3-4 hours for experienced mechanics. The process requires draining the existing tank, disconnecting fuel lines and sending unit connections, removing mounting straps, and reversing the process with the new tank. You'll need basic hand tools, a transmission jack or tank cradle for safe handling, and new fuel line fittings. While DIY installation is possible, professional installation is recommended due to fuel system complexity and the need to properly torque mounting hardware to 65-75 ft-lbs to prevent stress cracks.

Do these tanks come with mounting straps, fuel sending units, and other necessary hardware?

Most International LT fuel tanks are sold as tank-only units without mounting hardware or sending units. You'll typically need to transfer your existing sending unit, which requires a special spanner wrench for the locking ring. New mounting straps are recommended and sold separately for about $75-150 per set. Some suppliers offer complete kits that include tanks, straps, and rubber isolators, which can save time and ensure proper fitment. Always confirm what's included before ordering to avoid installation delays.

What's the difference between round and D-shaped fuel tanks for the International LT?

Round fuel tanks are the standard configuration for most International LT trucks, offering maximum capacity and easier installation with universal mounting straps. D-shaped (or rectangular) tanks are designed for specific chassis configurations where ground clearance or frame rail spacing is limited. D-shaped tanks typically hold 10-15% less fuel than round equivalents but provide 2-3 inches of additional ground clearance. Round tanks are generally $100-200 less expensive and have wider parts availability, while D-shaped tanks are special-order items with 2-3 week lead times.