Freightliner Century 112/120 Air Tanks-Wrap-Mount

Frequently Asked Questions About Freightliner Century 112/120 Air Tanks-Wrap-Mount

What is an air tank wrap and mount, and why would I need to replace mine?

The wrap is the metal bracket or band that secures the air tank to the truck frame, and the mount refers to the hardware and frame attachment points that hold the wrap in place. These components are typically replaced when the original wrap has rusted through, cracked, or bent from road debris and vibration, or when a tank is being repositioned or swapped out during frame or suspension work.

Will this wrap and mount fit my specific Century 112 or 120 without modification?

Fitment depends on your truck's model year, frame rail dimensions, and which air tank size and position (front, mid-frame, or rear) you are working with, since Freightliner used different tank configurations across production years. Always check the tank diameter and mounting hole spacing against the listed specs before ordering, and reach out to our parts team with your VIN or tank measurements if you are unsure.

What material and finish options are available, and how well do they hold up?

Wraps and mounts are commonly available in painted or powder-coated carbon steel, and some applications offer galvanized or aluminized options for better corrosion resistance. Given constant exposure to road salt, moisture, and debris underneath the truck, a coated or galvanized finish will generally outlast bare painted steel, especially in northern or coastal regions.

What tools and steps are involved in installing a replacement wrap or mount?

Installation typically involves supporting the air tank with a jack or strap, removing the old wrap bolts or U-bolts, cleaning the frame mounting surface, and torquing the new hardware to the manufacturer's specification once the tank is repositioned. Basic hand tools and a torque wrench are usually sufficient, but having a second person or a jack to hold the tank steady makes the job significantly easier and safer.

Are these air tank wraps and mounts subject to any DOT inspection requirements?

Air tanks and their mounting hardware are part of the air brake system and are checked during routine DOT inspections for secure mounting, rust-through, and structural integrity. A wrap or mount that is cracked, badly corroded, or allows the tank to shift can result in an out-of-service violation, so replacing worn components promptly helps keep your truck compliant.