Frequently Asked Questions About Peterbilt 352 Deck Plates & Air Line Boxes

Will these deck plates fit my specific year Peterbilt 352, and are there differences between COE and conventional models?

Most deck plates and air line boxes for the Peterbilt 352 are designed to fit models from 1969-1987, covering both COE (Cab Over Engine) and conventional configurations. However, mounting hole patterns can vary slightly between early and late production years. We recommend checking your existing mounting holes or contacting us with your VIN to ensure proper fitment. The primary difference between COE and conventional models is the deck plate angle and overall dimensions.

What gauge steel or aluminum should I choose, and how does it affect durability?

Deck plates typically come in 14-gauge steel (standard), 12-gauge steel (heavy-duty), or 3/16" aluminum. Steel plates offer superior strength and are ideal for heavy-duty applications or trucks that see regular loading dock use. Aluminum plates provide excellent corrosion resistance and weight savings but may show wear faster under heavy use. For most applications, 14-gauge steel with proper coating provides the best balance of durability and value.

Do I need to drill new holes for installation, and what tools are required?

Many deck plates come pre-drilled to match factory mounting points, but some universal fit options require drilling. Installation typically requires a drill with metal bits (if drilling is needed), a socket set, and grade 8 bolts. Some installations may require minor trimming for perfect fitment. Professional installation usually takes 1-2 hours per side. Always test fit before final mounting to ensure proper clearance around air lines and other components.

What finish options are available, and how do they hold up to road salt and weather?

Common finishes include chrome-plated steel, polished aluminum, powder-coated steel (black or custom colors), and polished stainless steel. Chrome provides excellent appearance but requires regular maintenance to prevent pitting. Powder coating offers the best corrosion resistance for steel plates. Polished aluminum naturally forms a protective oxide layer but may dull over time. Stainless steel options provide the best long-term appearance with minimal maintenance.

Can I install air line boxes without removing my existing deck plates?

In most cases, air line boxes can be installed without removing deck plates, as they typically mount to the frame rails or existing brackets. However, integrated deck plate and air line box combinations provide a cleaner appearance and may require deck plate removal. Stand-alone air line boxes usually measure 12-18 inches in length and require approximately 4-6 inches of clearance behind the deck plate. Ensure your air lines have adequate length and proper routing before installation.