Frequently Asked Questions About Isuzu NPR / HD Truck Deck Plates & Air Line Boxes

What material are these deck plates made from, and will they rust or corrode over time?

Our Isuzu NPR/HD deck plates are manufactured from either heavy-gauge steel with powder coating or diamond plate aluminum, depending on the specific model you choose. Steel versions feature a durable powder-coated finish that resists rust and corrosion when properly maintained. Aluminum options naturally resist corrosion without additional coating. For maximum longevity in harsh conditions or road salt exposure, we recommend the aluminum deck plates, though both materials are built to withstand commercial truck use.

Will these deck plates fit my specific Isuzu NPR model year, and are there differences between gas and diesel models?

Most of our deck plates are designed to fit Isuzu NPR and NPR-HD models from 2008 to current model years. However, there are slight mounting variations between pre-2016 and post-2016 models due to frame design changes. Gas and diesel models typically share the same mounting points, but we recommend verifying your specific truck's frame measurements before ordering. Each product listing includes detailed year ranges and any model-specific requirements. If you're unsure, contact our support team with your VIN for exact fitment confirmation.

Do I need to drill holes or make modifications to install these deck plates?

Most deck plates require drilling mounting holes into your truck's frame rails. Installation typically involves 4-6 mounting points per plate using provided hardware. Some universal models may require minor trimming for optimal fit around existing components. Professional installation is recommended if you're not comfortable drilling into frame rails. Installation usually takes 1-2 hours per side with basic tools including a drill, metal bits, and standard hand tools. Detailed installation instructions are included with each product.

What styles and finishes are available, and can I mount additional accessories?

We offer smooth steel, diamond plate aluminum, and textured steel options. Finishes include black powder coat, polished aluminum, and mill finish aluminum. Many deck plates feature pre-drilled accessory mounting points for toolboxes, air tanks, or additional storage. Load capacity varies by model but typically ranges from 300-500 pounds when properly mounted. Some models include integrated air line boxes, while others offer them as separate bolt-on accessories.

How do the integrated air line boxes work, and are they compatible with standard glad hands?

Integrated air line boxes provide protected storage for air hoses and electrical connections when not in use. They're designed to accommodate standard glad hand connectors and typical 15-20 foot air lines. The boxes feature spring-loaded or magnetic doors to keep connections clean and dry. Most models include rubber grommets or protective edges to prevent hose wear. If your truck has non-standard air line configurations, measure your glad hands and hose diameter to ensure proper fit before ordering.