Frequently Asked Questions About Peterbilt 352 Air Springs & Level Valves

Will these air springs and level valves fit my specific year Peterbilt 352?

Most air springs and level valves for the Peterbilt 352 are compatible with models from 1979 through 1987, which covers the entire production run of this model. However, there can be variations based on your specific suspension configuration (walking beam, spring ride, or air ride). We recommend checking your existing part numbers or contacting our support team with your VIN to ensure proper fitment. Some 352s were also built with different axle configurations that may require specific valve mounting brackets.

What are the signs that my level valves need replacement, and can I replace just the valve or do I need the entire assembly?

Common signs include uneven ride height between sides, air bags that won't hold pressure, or a truck that leans to one side when parked. You'll also notice excessive air consumption or hear air leaking from the valve area. In most cases, you can replace just the valve itself rather than the entire linkage assembly, which saves considerable cost. However, if the linkage arms are bent or the mounting brackets are damaged, you'll need to replace those components as well. We stock both complete assemblies and individual replacement valves.

How difficult is it to install air springs on a Peterbilt 352, and what special tools do I need?

Installation typically takes 2-4 hours per axle for someone with basic mechanical skills. You'll need standard hand tools, jack stands rated for commercial trucks, and ideally an air impact wrench. The most challenging part is usually removing the old air springs if they're original, as the mounting studs can be corroded. You'll want to spray penetrating oil on all mounting hardware the day before. No special alignment is needed after installation, but you should check and adjust your level valve linkage to ensure proper ride height.

What's the difference between standard replacement air springs and heavy-duty options for my 352?

Standard replacement air springs are rated for typical highway hauling applications and match OEM specifications. Heavy-duty options feature reinforced rubber compounds and additional fabric plies, providing 15-20% more load capacity and better resistance to ozone cracking. If you frequently haul at maximum legal weight, operate in extreme temperatures, or your 352 sees rough road conditions, the heavy-duty versions are worth the extra investment. They typically last 25-30% longer than standard springs under severe service conditions.

Can I convert my spring-ride Peterbilt 352 to air ride using these components?

While the air springs and level valves we carry are designed for existing air-ride 352s, converting from spring to air suspension requires a complete kit including brackets, air lines, tanks, and frame modifications. This is a significant project that often costs $4,000-6,000 in parts alone. If you're looking to improve ride quality on a spring-ride 352, we recommend starting with helper air bags that work with your existing leaf springs. These provide many benefits of air suspension at a fraction of the cost and complexity.