Frequently Asked Questions About International 9900/i/ix Deck Plates & Air Line Boxes

Will these deck plates fit my specific International 9900 model year?

Our deck plates are designed to fit International 9900, 9900i, and 9900ix models from 1998 through current production years. However, there are slight variations between early models (1998-2004) and later models (2005+). The mounting hole patterns are the same, but early models may require minor adjustments to the air line box positioning. Always verify your truck's specific model designation (9900, 9900i, or 9900ix) before ordering, as the 9900ix has a slightly different cab configuration that affects deck plate fitment.

What gauge steel are these deck plates made from, and will they rust?

Most of our deck plates are manufactured from 14-gauge (0.075") or 16-gauge (0.060") steel, depending on the specific product. The heavier 14-gauge options are recommended for trucks that frequently couple and uncouple trailers or operate in harsh conditions. All steel deck plates come with either a powder-coated finish or chrome plating. Powder-coated options provide excellent rust resistance when properly maintained, while chrome options offer superior corrosion protection but require regular polishing to maintain appearance. For maximum durability, we also offer aluminum deck plates that won't rust but may show water spots if not cleaned regularly.

Do I need to drill new holes or modify my truck to install these?

In most cases, our deck plates use existing factory mounting points and require no drilling. However, if you're upgrading from a basic deck plate to one with integrated air line boxes, you may need to drill 2-4 additional holes for the box mounting brackets. Installation typically takes 1-2 hours and requires basic hand tools including a socket set, drill (if adding air line boxes), and possibly a rivet gun for certain models. Some customers report that 2005-2007 models may have slightly misaligned factory holes that require minor elongation with a file or drill bit.

What's the difference between deck plates with integrated air line boxes versus separate boxes?

Integrated air line boxes are welded or formed directly into the deck plate, creating a cleaner, one-piece appearance and eliminating potential leak points between components. Separate air line boxes bolt onto the deck plate and offer more flexibility in positioning but require additional installation steps and gaskets to seal properly. Integrated units are generally preferred for show trucks or drivers wanting a professional appearance, while separate boxes are easier to replace if damaged and allow you to upgrade boxes independently of the deck plate.

Which finish holds up best against winter road salt and chemicals?

Based on customer feedback, powder-coated deck plates in black or color-matched finishes provide the best overall protection against road salt and de-icing chemicals when properly maintained. Chrome looks exceptional when new but requires frequent cleaning and waxing to prevent pitting from salt exposure. Stainless steel options offer the best chemical resistance but are typically 2-3 times more expensive. For maximum protection, apply a coat of truck bed liner or rubberized undercoating to the backside of any steel deck plate, regardless of the front finish. Regular washing during winter months and annual touch-ups of any chips in powder coating will significantly extend the life of your deck plates.