Frequently Asked Questions About Freightliner FLC112 Front Axle Air Ride Kits

Will these air ride kits fit my specific year FLC112, and what models are compatible?

Our front axle air ride kits are designed to fit Freightliner FLC112 models from 1984 through 2003. They're compatible with both set-back and set-forward axle configurations. However, trucks with factory air ride or those that have been stretched may require additional modifications. We recommend checking your axle manufacturer (typically Dana Spicer, Meritor, or Hendrickson) and confirming your axle weight rating before ordering, as some kits are rated for 12,000 lb axles while others accommodate up to 14,600 lbs.

How difficult is the installation, and can I do it myself?

Installation typically takes 6-8 hours for experienced mechanics and 10-12 hours for DIY installers with moderate mechanical skills. The kit requires cutting and removing the existing leaf spring hangers and welding new brackets in place. You'll need access to a welder, cutting torch or plasma cutter, and standard hand tools. Most customers report the hardest part is ensuring proper ride height alignment. We strongly recommend having at least two people for the installation, as the components are heavy and require precise positioning.

What's included in the kit, and will I need additional parts?

Each complete kit includes air bags, mounting brackets, air lines, fittings, ride height control valves, and detailed installation instructions. However, you will need to purchase separately: a compressor (if your truck doesn't have one), air tanks, pressure gauges for the dash, and DOT-approved air line if you need longer runs than provided. Some customers also opt for manual dump valves for easier height adjustment, which are sold separately.

How much will this improve my ride quality, and are there any downsides?

Customers typically report a 60-80% improvement in ride quality, with the most noticeable difference on rough roads and expansion joints. The air ride eliminates the harsh jarring common with leaf springs and reduces cab shake significantly. The main trade-offs are: slightly more complex maintenance (checking for air leaks, occasional air bag replacement every 100,000-150,000 miles), and the need to maintain proper air pressure. Some drivers also note a slight increase in body roll during sharp turns compared to stiff leaf springs.

What maintenance is required, and how long do these systems last?

Air ride systems require minimal but regular maintenance. Check air pressure weekly, inspect air lines and fittings for leaks monthly, and keep the air bags clean and free from road debris. The air bags typically last 100,000-150,000 miles with proper care, though this varies based on load weight and road conditions. Most common issues are minor air leaks at fittings (easily fixed with thread sealant) and ride height valve adjustments after the first few months as components settle. The mounting brackets and hardware typically last the life of the truck when properly installed.