Frequently Asked Questions About Peterbilt 375/377 Fuel Tank Brackets & Straps

Will these fuel tank brackets fit my specific year Peterbilt 375 or 377?

Most aftermarket fuel tank brackets and straps for Peterbilt 375/377 models are designed to fit trucks manufactured from 1987 through 2007. However, there can be variations based on tank size (50-150 gallon tanks) and whether you have a single or dual tank setup. Always verify the bracket measurements and mounting hole patterns against your existing setup. If you're unsure, provide your VIN or year/model details when ordering to ensure proper fitment.

What's the difference between aluminum and steel fuel tank straps, and which should I choose?

Steel straps are more economical and offer excellent strength, but they require regular maintenance to prevent rust, especially in areas with road salt. Aluminum straps cost more upfront but resist corrosion naturally and weigh less, improving fuel economy slightly. For trucks operating in harsh weather conditions or coastal areas, aluminum is worth the investment. Steel works well for dry climates or if you're diligent about applying protective coatings annually.

Can I install these brackets myself, or do I need special tools?

Installation typically requires basic hand tools including socket sets, wrenches, and a floor jack to support the tank during removal. The most challenging part is safely lowering and supporting the fuel tank, which can weigh 400+ pounds when full. We strongly recommend draining the tank first and having a helper. Some brackets may require drilling new mounting holes. Plan for 2-4 hours per tank, depending on rust and accessibility. Professional installation runs $200-400 if you prefer to avoid the heavy lifting.

How do I know when my fuel tank straps need replacement?

Inspect your straps during every oil change. Replace them immediately if you notice: visible rust or corrosion covering more than 30% of the surface, any cracks or breaks in the metal, stretched or elongated mounting holes, or if the rubber isolators are cracked or missing. Don't wait for complete failure - a dropped fuel tank can cause extensive damage and create serious safety hazards. Most straps last 5-10 years depending on operating conditions.

Are universal fuel tank brackets really universal, or should I buy Peterbilt-specific parts?

While some universal brackets can work, Peterbilt-specific brackets ensure proper fit without modifications. The 375/377 models have unique frame rail spacing and mounting points that universal brackets might not accommodate. Peterbilt-specific brackets also maintain proper tank positioning for fuel gauge accuracy and ground clearance. The small price difference is worth avoiding fitment headaches and potential safety issues from improperly secured tanks.