Frequently Asked Questions About Peterbilt 389 Glider Frame Steps & Acc.

What material are these frame steps made from, and will they rust or corrode over time?

Most Peterbilt 389 frame steps are manufactured from either heavy-duty aluminum or stainless steel. Aluminum steps offer excellent corrosion resistance and lighter weight, making them ideal for weight-conscious operators. Stainless steel options provide superior strength and durability, especially in harsh winter conditions with road salt exposure. Both materials are designed to withstand years of commercial use without significant corrosion when properly maintained.

Will these frame steps fit my specific Peterbilt 389 model year and configuration?

Frame steps for Peterbilt 389 gliders are typically designed to fit model years 2008 and newer. However, compatibility can vary based on your specific frame rail spacing, fuel tank configuration, and whether you have extended or standard cab models. Most steps are adjustable within a range of 24-34 inches for frame width. We recommend measuring your frame rail spacing and checking your VIN-specific details before ordering to ensure proper fitment.

How difficult is the installation process, and what tools will I need?

Installation typically takes 2-4 hours per side for someone with basic mechanical skills. You'll need standard hand tools including socket wrenches (typically 3/4" and 7/8"), drill with metal bits for any custom mounting holes, and potentially a grinder for minor modifications. Most frame steps come with universal mounting brackets that bolt directly to existing frame holes, though some drilling may be required depending on your specific truck configuration. Professional installation is recommended if you're not comfortable working with heavy components.

What finish options are available, and which holds up best to daily use?

Common finish options include polished aluminum, brushed stainless steel, powder-coated steel, and chrome-plated steel. Polished aluminum requires regular maintenance to maintain its shine but won't rust. Powder-coated options offer the best chip and scratch resistance for work trucks. Chrome provides an attractive mirror finish but may show wear faster in heavy-use applications. For longevity with minimal maintenance, brushed stainless steel or powder-coated finishes are recommended.

What weight capacity do these steps have, and are they DOT compliant?

Quality frame steps for Peterbilt 389s typically support 300-500 pounds per step, depending on the manufacturer and design. Most reputable brands meet or exceed DOT requirements for commercial vehicle access systems. Look for steps that feature anti-slip surfaces (either punched holes or grip tape) to ensure compliance with safety regulations. Always verify that the specific model you're considering includes DOT certification documentation if required for your operation.