Frequently Asked Questions About Freightliner Cascadia 113/125 Fuel Tank Accessories

Will these fuel tank accessories fit my specific Cascadia model year?

Most fuel tank accessories for the Cascadia 113/125 are designed to fit model years 2008-2017 (often called "old body style") and 2018-present (new body style). However, there are important differences between these generations. The mounting points and tank configurations changed significantly with the 2018 redesign. Always verify your truck's exact model year and tank size (typically 100, 120, or 150 gallon) before ordering. If you're unsure, check your VIN or call us with your truck's specifications.

What's the difference between aluminum and stainless steel fuel tank accessories?

Aluminum accessories are lighter weight (reducing overall vehicle weight by 40-60%) and more affordable, but require regular polishing to maintain their shine. Stainless steel options are heavier but offer superior corrosion resistance and maintain their appearance longer with minimal maintenance. For trucks operating in harsh winter conditions with heavy road salt exposure, stainless steel typically provides better long-term value despite the higher initial cost.

Do I need special tools or professional installation for fuel tank straps and brackets?

Basic fuel tank strap replacement typically requires standard hand tools including socket sets, wrenches, and a floor jack to support the tank. Most installations take 2-3 hours per side. However, if you're replacing tank mounting brackets or need to drop the tank completely, professional installation is recommended due to weight and safety concerns. Always drain the fuel tank before beginning work and use proper jack stands for support.

Are aftermarket fuel tank fairings and skirts worth the investment?

Quality aftermarket fuel tank fairings can improve fuel economy by 2-5% through better aerodynamics, typically paying for themselves within 6-12 months for high-mileage operations. Look for fairings made from durable ABS plastic or fiberglass that can withstand road debris impact. Ensure any fairing you choose allows proper access to fuel caps, DEF tanks, and step areas without removal.

How do I prevent galvanic corrosion between aluminum tanks and steel brackets?

Galvanic corrosion occurs when dissimilar metals contact each other in the presence of moisture. Use isolation materials like rubber strips, plastic washers, or anti-corrosion tape between aluminum fuel tanks and steel mounting brackets. Apply dielectric grease to all connection points and inspect these areas every 6 months. Replace any worn isolation materials immediately to prevent expensive tank damage.