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Deck Plates For Peterbilt Trucks
Deck plates — also called step plates or cab entry plates — provide the non-slip stepping surface on the fuel tank steps, frame rails, and cab entry areas of a Peterbilt truck. Heavy-duty aluminum tread plate or diamond-plate steel deck plates are standard in vocational and fleet applications for their durability and grip in muddy, wet, or icy conditions. Whether you're replacing a damaged plate or upgrading to a more durable material, we carry deck plates sized for common Peterbilt applications.
Frequently asked questions about deck plates
What material is best for Peterbilt deck plates — aluminum or steel?
Aluminum tread plate is the most popular choice for its combination of light weight, corrosion resistance, and adequate strength for cab step applications. Stainless steel offers superior durability and a polished appearance preferred by owner-operators, but at added weight and cost. Mild steel is the least expensive but requires regular inspection for rust, particularly in northern states where road salt is used.
Are deck plates a DOT requirement on commercial trucks?
FMCSA regulations require that steps and handholds on commercial motor vehicles be maintained in a safe condition. While there's no specific regulation mandating a particular deck plate material or style, a cracked, missing, or severely corroded step plate that creates a slip hazard can constitute an equipment violation. Maintaining intact, gripping deck plates is part of a basic equipment safety compliance program.
Can I fabricate a replacement deck plate, or should I use an OEM or aftermarket part?
Fabricating a replacement from standard aluminum tread plate stock is a common and acceptable approach for shops with basic fabrication capability — the dimensions just need to match the original mounting footprint and hardware pattern. Pre-cut aftermarket plates are available for most common Peterbilt tank and step configurations, which saves fabrication time and ensures correct fitment without custom cutting.