Peterbilt 359 Deck Plates & Air Line Boxes

Frequently Asked Questions About Peterbilt 359 Deck Plates & Air Line Boxes

What years and models are these deck plates compatible with?

Our deck plates and air line boxes are designed specifically for Peterbilt 359 models from 1967-1987. While many parts fit across all years, some variations exist between early models (1967-1985) and late models (1986-1987). Always check the product description for specific year compatibility, as mounting hole patterns and dimensions can vary slightly between production runs.

What material options are available and which holds up best?

We offer deck plates in polished stainless steel, chrome-plated steel, and aluminum. Stainless steel (typically 304 grade) provides the best long-term durability and corrosion resistance, especially in harsh weather conditions. Chrome-plated options offer a brilliant shine but require more maintenance to prevent pitting. Aluminum plates are lightweight and won't rust, but may show scratches more easily than steel options.

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

Most of our deck plates use existing factory mounting points and require no drilling. However, some custom or aftermarket configurations may need minor modifications. Standard installations typically take 1-2 hours per side using basic hand tools. We recommend test-fitting before final installation, as some older trucks may have non-standard spacing due to previous modifications or frame repairs.

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

Standard deck plates typically measure 24-30 inches in length and cover the area between the cab and sleeper. Extended plates range from 36-48 inches and provide additional coverage for trucks with larger gaps or custom sleeper configurations. Extended plates offer more mounting surface for accessories like extra lights or air horns, while standard plates maintain the classic 359 appearance.

Will these air line boxes fit both single and dual air line setups?

Yes, our air line boxes accommodate both configurations. Single line boxes have one inlet/outlet port, while dual line boxes feature two ports for tractors with separate service and emergency lines. Internal dimensions are typically 8x6x4 inches, providing ample room for coiled lines. Make sure to specify your air line configuration when ordering to ensure proper fitment and port placement.