Frequently Asked Questions About Freightliner FLC120 Air Tanks, Wraps & Mounting

Will these air tanks fit my specific year FLC120, and what are the mounting bracket requirements?

Our air tanks are designed to fit Freightliner FLC120 models from 1990-2003. However, mounting configurations can vary based on your truck's original equipment and any modifications. Most installations require specific mounting brackets that match your frame rail spacing - typically 34" or 35" center-to-center. We recommend measuring your existing setup or checking your VIN-specific build sheet before ordering. If you're unsure, our customer service team can help verify compatibility with your truck's specifications.

What's the difference between aluminum and steel air tanks, and which is better for my application?

Aluminum tanks are approximately 50% lighter than steel, resist corrosion better, and are ideal for weight-conscious operations or coastal/high-salt environments. Steel tanks are more economical upfront, highly durable against impact damage, and perform well in standard conditions with proper maintenance. For most over-the-road applications, aluminum tanks provide the best long-term value despite higher initial cost. Steel remains popular for vocational trucks or budget-conscious operators who perform regular maintenance.

Can I install these air tanks myself, and what tools do I need?

Installation typically takes 2-4 hours for experienced mechanics. You'll need basic hand tools, a torque wrench, and potentially a drill for new mounting holes. Critical requirements include proper air line routing to prevent chafing, correct torque specifications (usually 35-45 ft-lbs for mounting bolts), and leak testing with soapy water. While DIY installation is possible, we recommend professional installation if you're unfamiliar with air brake systems, as improper installation can cause brake failure.

What size air tanks do I need, and can I upgrade from my stock configuration?

Stock FLC120s typically come with 11" x 30" or 11" x 37" tanks. You can upgrade to larger capacity tanks if you have adequate frame space and proper mounting brackets. Larger tanks provide more air reserve for frequent brake applications but require verification of frame clearance and potential brake system adjustments. Common upgrades include moving to 13" diameter tanks or adding a third tank. Always maintain proper primary/secondary tank ratios as specified by DOT regulations.

How do tank wraps protect my investment, and are they worth the extra cost?

Tank wraps provide crucial protection against road debris, salt spray, and moisture that cause premature tank failure. Quality wraps can extend tank life by 3-5 years in harsh conditions. They're especially valuable in winter states where road salt is prevalent, potentially saving hundreds in early tank replacement. Installation is straightforward - simply wrap around the tank and secure with provided straps. For the modest cost (typically $30-50 per tank), wraps offer excellent return on investment for any driver concerned about equipment longevity.