Description
Part Number: 334-814
The suspension on a heavy-duty truck takes a tremendous amount of abuse. Between loaded trailers, rough roads, potholes, and years of service, suspension components gradually wear down and lose their ability to control weight and movement properly. This Low Air Leaf Kit is designed to replace worn suspension components associated with the low air leaf suspension system and restore proper operation.
When suspension wear starts showing up, drivers often notice changes in ride quality before anything else. The truck may feel rougher, lean differently under load, or develop unusual noises coming from the suspension. A worn leaf assembly can also contribute to tire wear and handling problems that become expensive if ignored.
Replacing worn suspension components before they fail completely helps keep the truck operating safely and predictably.
What the Part Does
The low air leaf suspension system combines leaf spring support with air suspension characteristics to help manage load weight while improving ride quality.
The components within this kit work together to:
- Support vehicle weight
- Control axle position
- Absorb road shock
- Reduce suspension movement
- Maintain ride height
- Improve handling under load
As these components wear, the suspension loses its ability to distribute loads properly. Drivers may not notice the change immediately because suspension wear often happens gradually over thousands of miles.
Trucks receiving low air leaf suspension repairs often benefit from inspection of the TRA-699 Spring, especially when ride quality concerns are involved.
Common Problems This Part Solves
Suspension wear can show up in several ways. Symptoms include:
- Uneven ride height
- Clunking or banging noises
- Excessive suspension movement
- Harsh ride quality
- Uneven tire wear
- Poor handling when loaded
- Increased vibration
In many cases, these symptoms worsen slowly enough that drivers adapt to them until the difference becomes obvious after repairs are completed.
Why Replacement Matters
Suspension problems tend to spread. When one component wears excessively, nearby parts are forced to absorb additional stress.
Replacing worn suspension components restores proper load distribution and helps protect related parts from premature wear.
It can also improve steering feel, reduce tire wear, and provide a smoother ride for the driver. Waiting too long often means replacing more parts later.
Compatibility and Fitment
This Low Air Leaf Kit is designed for applications requiring replacement part number 03AL2-334-814.
Before ordering, verify suspension configuration and original equipment specifications. Suspension systems can vary based on axle setup and vehicle application.
Installation and Service Notes
Installation should be performed using proper lifting equipment and suspension service procedures.
When replacing suspension components, it’s smart to inspect:
- Bushings
- Hangers
- Brackets
- Springs
- U-bolts
- Air suspension components
Many technicians choose to replace related wear items during the same repair to reduce future downtime. After installation, ride height and suspension alignment should be checked.
Use Case
This kit is commonly used during suspension rebuilds, ride quality repairs, fleet maintenance programs, and high-mileage suspension overhauls.
About Us
We’re a family-owned group of Peterbilt dealerships dedicated to getting you the parts you need quickly and affordably. Whether you’re looking for Paccar OEM parts, reliable aftermarket replacements, or popular upgrades like seats and filters, we make it easy to keep your truck running and on the road. If you don’t see what you need online, just give us a call or send an email — chances are we can get it. We pride ourselves on fast service, fair prices, and being a partner you can depend on when downtime isn’t an option.
