Frequently Asked Questions About Peterbilt 330/335/337 Fuel Tank Brackets & Straps

What year models do these fuel tank brackets and straps fit?

Our fuel tank brackets and straps are designed to fit Peterbilt 330, 335, and 337 models from 2005 through current production years. However, there were minor mounting changes in 2008 and 2014 models. Always verify your specific truck's VIN and tank configuration before ordering, as some chassis configurations may require different bracket lengths or mounting positions.

Are these brackets made from aluminum or steel, and which is better for my application?

We carry both aluminum and steel options. Steel brackets are typically powder-coated or galvanized and offer superior strength for heavy-duty applications, making them ideal for vocational trucks. Aluminum brackets weigh about 40% less and resist corrosion naturally, making them perfect for weight-conscious applications or trucks operating in high-salt environments. Both meet or exceed OEM specifications for strength and durability.

Can I install these brackets myself, and what tools will I need?

Yes, most experienced mechanics can install these brackets with standard shop tools. You'll need a socket set (typically 3/4" and 7/8"), torque wrench, jack stands or lift, and fuel tank support jack. Installation usually takes 2-4 hours per tank. Critical safety note: always drain fuel tanks completely and support them properly during replacement. We recommend having a second person assist due to the weight and awkward positioning of fuel tanks.

How do I know if I need 20", 23", or 26" straps for my truck?

Strap length depends on your fuel tank diameter. Measure from the bottom of your tank bracket, around the tank, to the opposite bracket mounting point. Add 2-3 inches for proper tensioning. Generally, 50-gallon round tanks use 20" straps, 60-80 gallon tanks use 23" straps, and 100+ gallon or rectangular tanks typically require 26" straps. When in doubt, measure your existing straps or contact us with your tank specifications.

Why are my current brackets failing, and how can I prevent premature wear?

Common failure causes include road salt corrosion, loose mounting bolts causing metal fatigue, and overloading beyond weight ratings. To maximize bracket life: inspect and retorque mounting bolts every 6 months (torque to 85-95 ft-lbs), rinse road salt regularly if operating in winter conditions, ensure rubber isolators are in good condition to prevent metal-on-metal contact, and never exceed your tank's weight capacity. Quality aftermarket brackets often feature thicker gauge material than OEM for extended service life.