Peterbilt 330/335/337 Deck Plates & Air Line Boxes

Frequently Asked Questions About Peterbilt 330/335/337 Deck Plates & Air Line Boxes

What years and models are these deck plates compatible with?

Our deck plates and air line boxes are specifically designed for Peterbilt 330, 335, and 337 models from 2005 to present. However, fitment can vary based on your truck's specific configuration and any aftermarket modifications. We recommend checking your existing mounting hole patterns or contacting us with your OEM for exact compatibility verification.

Are these deck plates made from aluminum or steel, and will they rust?

Most of our Peterbilt deck plates are constructed from heavy-gauge aluminum, which provides excellent corrosion resistance and won't rust. Some models feature stainless steel hardware and backing plates for added durability. Each product listing specifies the exact materials used. For trucks operating in harsh winter conditions with road salt exposure, we recommend the aluminum options for maximum longevity.

Do I need to drill new holes or modify my bumper for installation?

In most cases, our deck plates are designed to use existing factory mounting points on your Peterbilt bumper. However, some aftermarket bumpers or custom configurations may require minor drilling. Installation typically takes 30-45 minutes per side with basic hand tools. We include detailed instructions with each order, and mounting hardware is included unless otherwise noted in the product description.

What's the difference between standard and lighted deck plates?

Standard deck plates provide a clean, finished look and protect your air and electrical connections. Lighted deck plates include integrated LED marker lights that tie into your existing lighting system, adding both visibility and DOT compliance for certain applications. Lighted versions require basic wiring connections but use standard trailer connectors for easy installation. Both styles are available in polished, brushed, or powder-coated finishes.

Can these accommodate both air lines and electrical connections?

Yes, our deck plates and air line boxes are designed with dual-purpose functionality. Most models feature separate grommeted openings for air lines (typically accommodating standard 1/2" lines) and electrical connections (7-way and auxiliary plugs). The interior compartments provide weather protection while keeping connections easily accessible for daily pre-trip inspections and coupling/uncoupling.