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Peterbilt 389 Front Axle Air Ride Kits
Frequently Asked Questions About Peterbilt 389 Front Axle Air Ride Kits
Will these air ride kits fit my specific Peterbilt 389 model year?
Most front axle air ride kits are designed to fit Peterbilt 389 models from 2008 to present. However, there can be variations based on your truck's configuration, such as set-back or set-forward axles, and whether you have a day cab or sleeper. Before ordering, check your front axle weight rating (typically 12,000-20,000 lbs) and measure your current spring height to ensure proper fitment. If you're unsure, contact us with your VIN number and we can verify compatibility.
How difficult is the installation process, and what tools do I need?
Installation typically takes 4-6 hours for experienced mechanics and 6-10 hours for DIY installations. You'll need basic hand tools, a floor jack capable of supporting your front axle weight, jack stands, and an air compressor for system testing. The most challenging part is usually removing the existing leaf springs and aligning the new air bags properly. Many customers report that having a second person helps significantly. Professional installation runs between $500-$800 at most truck shops if you prefer not to tackle it yourself.
What's included in the complete kit, and will I need additional parts?
A complete front axle air ride kit typically includes air bags, mounting brackets, air lines, fittings, a height control valve, and detailed instructions. However, you may need to purchase separately: air tank (if your truck doesn't have auxiliary air capacity), pressure gauge for the dash, and possibly longer brake lines if your suspension travel increases significantly. Some kits require welding for bracket installation, while bolt-on options are available for those without welding capabilities.
How much will this improve my ride quality, and are there any downsides?
Drivers typically report a 60-80% improvement in ride quality, with the most noticeable difference on rough roads and expansion joints. The air ride significantly reduces cab shake and driver fatigue on long hauls. The main trade-offs include: slightly higher maintenance requirements (checking for air leaks, occasional air bag replacement every 100,000-150,000 miles), potential for emergency situations if an air bag fails (though most kits include safety features), and initial cost investment. Cold weather performance is generally good down to -40?F with quality kits.
What's the typical lifespan and warranty coverage for these kits?
Quality air ride kits typically last 200,000-300,000 miles with proper maintenance. Air bags themselves usually need replacement every 100,000-150,000 miles depending on load conditions and road quality. Most reputable manufacturers offer 1-2 year warranties on complete kits, with some providing lifetime warranties on brackets and metal components. Keep all receipts and follow the maintenance schedule (checking air pressure weekly, inspecting for leaks monthly) to ensure warranty coverage remains valid.