Frequently Asked Questions About International ProStar Diesel Fuel Tanks

What size fuel tanks are available for my International ProStar, and how do I determine which one fits my truck?

International ProStar fuel tanks typically come in 60, 80, 100, 120, and 150-gallon capacities. To determine the correct size for your truck, check your door jamb sticker for the original equipment specifications or measure your existing tank's dimensions. ProStar models from 2008-2016 generally accept all standard sizes, but frame rail spacing and wheelbase configuration may limit your options. Always verify your truck's specific year and VIN prefix to ensure proper fitment.

Are these fuel tanks made of aluminum or steel, and which material is better for my application?

Most ProStar replacement tanks are available in both aluminum and steel options. Aluminum tanks are lighter (saving 50-70 pounds compared to steel), resist corrosion better, and are ideal for weight-conscious operations. Steel tanks cost 20-30% less upfront and offer better impact resistance in harsh conditions. For most over-the-road applications, aluminum provides the best long-term value, while steel may be preferable for severe-duty or construction applications.

What additional parts do I need to complete the fuel tank installation?

Beyond the tank itself, you'll need fuel tank straps (usually sold separately), mounting brackets, rubber isolators, and potentially new fuel lines and fittings. Most installations also require a sending unit if not transferring from your old tank, fuel cap, and anti-siphon device. Budget an additional $150-300 for these components. Some drivers report needing to modify or replace crossmembers on 2011-2013 models when upgrading to larger capacity tanks.

Can I install a ProStar fuel tank myself, or do I need professional installation?

While experienced mechanics can complete the installation in 2-4 hours, several factors make professional installation advisable. The tank must be properly grounded, fuel lines correctly routed, and the sending unit calibrated to your dash gauge. Many customers report issues with fuel gauge accuracy after DIY installations. Additionally, improper installation can void warranties and create safety hazards. Most shops charge $200-400 for installation, which includes proper disposal of your old tank.

Do aftermarket fuel tanks affect my ProStar's fuel gauge accuracy?

Fuel gauge compatibility is a common concern with aftermarket tanks. Most quality replacement tanks include mounting points for OEM sending units, but calibration issues can occur. ProStar models use either 240-33 ohm or 0-90 ohm sending units depending on the year. Verify your truck's sending unit type before ordering. Some 2014-2016 models may require a gauge interface module for accurate readings. If experiencing gauge problems after installation, the sending unit arm may need adjustment or replacement.