Frequently Asked Questions About Peterbilt 367 Air Springs & Level Valves

Will these air springs and level valves fit my specific year model Peterbilt 367?

Our air springs and level valves are designed to fit Peterbilt 367 models from 2007 to present. However, there can be variations based on your truck's suspension configuration (Airglide, Airliner, or Low Air Leaf). Before ordering, check your existing part numbers or contact our support team with your VIN to ensure proper fitment. Most OEM replacements will match Firestone W01-358-9622 or Continental 64227 style air springs.

How difficult is it to install these components, and what tools will I need?

Installation typically takes 2-4 hours per axle for someone with moderate mechanical experience. You'll need basic hand tools, jack stands, and ideally an air impact wrench. The most challenging part is usually removing the old air springs if they're corroded. Level valve installation requires proper adjustment - the arm must be set at the correct angle (typically 90 degrees) when the truck is at ride height. We recommend having a shop manual or following manufacturer torque specs for mounting bolts (usually 45-65 ft-lbs).

What's the difference between OEM and aftermarket options, and how long do they typically last?

OEM air springs (Firestone, Continental, Goodyear) typically last 5-7 years or 500,000-700,000 miles under normal conditions. Quality aftermarket options from brands like Torque Parts or Buyers Products offer 3-5 years of service life at about 40-60% of OEM cost. The main differences are in rubber compound quality and reinforcement layers. Heavy-duty applications or frequent overloading can reduce lifespan significantly. Look for springs with 4-ply minimum construction and weather-resistant rubber compounds.

My truck is sagging or riding rough - is it the air springs or level valves causing the problem?

To diagnose, first check for visible air leaks using soapy water around the springs and fittings. If the truck sags overnight, it's likely an air spring issue. If it maintains height when parked but rides poorly or won't adjust properly while driving, suspect the level valve. Common level valve symptoms include delayed height adjustment, bouncing, or one side sitting higher than the other. A stuck or worn level valve linkage is often the culprit before the valve itself fails.

Can I replace just one air spring, or should I do them in pairs?

While you can replace a single failed air spring, we strongly recommend replacing them in pairs (both sides of an axle). Mismatched air springs can cause uneven ride height, premature wear on the new spring, and handling issues. If one spring has failed due to age, the other is likely close behind. The labor cost is minimal when doing both at once, and you'll avoid a second breakdown. For level valves, single replacement is generally fine unless you're experiencing systemic air system issues.