Peterbilt 389 Glider Bumpers

Frequently Asked Questions About Peterbilt 389 Glider Bumpers

Will these bumpers fit my specific year Peterbilt 389 glider kit?

Our Peterbilt 389 glider bumpers are designed to fit 2008 and newer 389 models, including glider kits built on these chassis. However, some pre-2008 conversions may require minor modifications to mounting brackets. We recommend checking your OEM or calling our tech support at 1-888-875-2425 to confirm compatibility with your specific glider configuration, as some custom glider builders may use non-standard mounting points.

What's the difference between chrome steel and aluminum bumpers for my 389?

Chrome steel bumpers typically weigh 85-100 pounds and offer superior impact resistance, making them ideal for heavy-duty applications. Aluminum bumpers weigh approximately 40-50 pounds, providing better fuel economy and easier handling during installation. Chrome steel requires more maintenance to prevent rust but delivers a classic mirror finish, while polished aluminum resists corrosion naturally but may show scratches more easily. Both options fit identically and use the same mounting hardware.

Can I install these bumpers myself, or do I need professional help?

Installation typically takes 2-3 hours with basic tools including a socket set, torque wrench, and jack stands. The bumper must be properly supported during installation as even aluminum versions are heavy and awkward to handle alone. Most customers successfully complete the installation with a helper, though alignment can be tricky on some glider builds due to frame variations. Our tech support can walk you through any challenges.

Do these bumpers come with mounting brackets and hardware?

Most of our Peterbilt 389 glider bumpers include standard mounting brackets designed for OEM mounting points. However, hardware (bolts, nuts, washers) is typically sold separately to accommodate various frame widths and custom applications common in glider builds. We offer complete hardware kits for $45-65 that include grade 8 bolts and stainless steel options. Some glider kits may require adapter brackets if the frame rails have been modified.

How do I choose between a 16-inch, 18-inch, or 20-inch bumper?

Bumper size refers to the front-to-back depth measurement. The 16-inch is standard for most highway applications and provides adequate protection while maintaining ground clearance. The 18-inch offers extra protection for vocational use or frequent dock work. The 20-inch is typically chosen for heavy-haul applications or when matching existing fleet specifications. All sizes use the same mounting points, but deeper bumpers may require longer air hose connections and can affect approach angles on steep ramps.