Frequently Asked Questions About Mack CH/CHN/CHU Truck Air Tanks, Wraps & Mounting

Will these air tanks fit my specific Mack CH, CHN, or CHU model year?

Our air tanks are designed to fit Mack CH, CHN, and CHU models from 1988 to 2007. However, there can be variations based on your truck's specific configuration, such as wheelbase length and factory options. We recommend checking your current tank dimensions and mounting bracket spacing before ordering. Most replacement tanks are 8" x 33" or 8.5" x 26" for these models. If you're unsure, contact us with your VIN number and we can verify compatibility.

What's the difference between aluminum and steel air tanks, and which should I choose?

Aluminum tanks are lighter (reducing overall vehicle weight by 15-20 lbs per tank), resist corrosion better, and typically last longer in harsh weather conditions. Steel tanks are more affordable upfront and can handle higher impact without denting. For trucks operating in northern states with heavy road salt exposure, aluminum is usually the better long-term investment. Steel tanks work well in drier climates and for operators on tighter budgets who don't mind periodic rust prevention maintenance.

Do I need special tools or brackets to install these air tanks?

Installation typically requires basic hand tools including wrenches, sockets, and potentially an air line cutter. Most replacement tanks use the existing mounting brackets, but check if your current brackets are rusted or damaged. Some installations may require new mounting straps (usually 26" or 30" depending on tank size). Always ensure proper torque specifications (typically 25-35 ft-lbs for mounting bolts) and use thread sealant on all air line connections to prevent leaks.

How do tank wraps/covers help, and are they worth the investment?

Tank wraps provide both aesthetic and functional benefits. They protect against road debris, salt, and moisture that can cause premature corrosion, potentially doubling your tank's lifespan. Stainless steel wraps also improve your truck's appearance and resale value. For trucks operating in harsh conditions or those wanting a custom look, wraps typically pay for themselves through extended tank life and reduced maintenance.

What size air tank do I need, and can I upgrade to a larger capacity?

Standard Mack CH/CHN/CHU trucks typically use either single 8" x 33" tanks or dual 8.5" x 26" tank configurations. You can upgrade to larger capacity tanks if you have adequate frame space and proper mounting points. Larger tanks provide more air reserve for heavy brake usage or air-powered accessories. Measure your available space carefully - you'll need at least 2 inches of clearance on all sides for proper airflow and maintenance access.