Hendrickson makes suspension components for heavy trucks, not passenger vehicles
Hendrickson is a manufacturer of suspension systems and parts for medium-duty and heavy-duty trucks — the kind you see hauling freight on highways, not the pickup truck in your driveway. The company makes axles, springs, shock absorbers, and integrated suspension assemblies that are built into trucks at the factory or installed as aftermarket replacements by fleet operators and independent shops.
If you own or operate a commercial truck, you may encounter Hendrickson parts during maintenance or repair. If you drive a passenger vehicle, you will not. Understanding what Hendrickson makes, where it fits in a truck's suspension system, and how to source parts or service is useful if you manage a fleet or own a heavy truck yourself.
Key Takeaways
- Hendrickson manufactures suspension systems for medium-duty and heavy-duty commercial trucks, not passenger cars or light pickups.
- Common Hendrickson products include air suspension systems, leaf spring assemblies, shock absorbers, and integrated axle-and-spring packages.
- Hendrickson parts are typically sourced through truck dealers, heavy-duty parts distributors, and authorized Hendrickson service centers rather than general auto parts stores.
- Maintenance intervals and replacement costs for Hendrickson suspension components vary widely depending on truck weight, cargo, and operating conditions.
- Identifying the correct part requires the truck's make, model, year, and suspension configuration — not all heavy trucks use Hendrickson systems.
What Hendrickson suspension systems include
Hendrickson produces several types of suspension assemblies. Air suspension systems use compressed air springs instead of traditional coil or leaf springs, which allows the truck to adjust ride height and stiffness based on load. These are common on tractor-trailers and some medium-duty trucks because they reduce driver fatigue and protect cargo.
Leaf spring suspensions remain standard on many heavy trucks and are simpler and cheaper than air systems. Hendrickson manufactures both the springs themselves and the complete suspension package that includes hangers, shackles, and bushings.
Hendrickson also makes shock absorbers designed for the weight and speed ranges of commercial trucks, and integrated axle assemblies that combine the axle, suspension, and brake components into one unit. The company also produces tag axles — additional rear axles that can be raised or lowered to distribute weight and comply with legal load limits.
How to identify which Hendrickson parts your truck needs
Hendrickson suspension systems are not one-size-fits-all. A truck's suspension depends on its gross vehicle weight rating (GVWR), the type of cargo it carries, and whether it is a tractor, straight truck, or trailer. A light-duty medium truck may use a straightforward leaf spring setup, while a heavy tractor pulling a full load requires an air suspension with multiple axles.
To find the right parts, you need the truck's vehicle identification number (VIN), which tells a parts supplier or technician the original suspension configuration. You also need to know whether the truck is still using the original suspension or has been modified. Some fleet operators upgrade to aftermarket suspensions or swap components, which changes what parts fit.
If you are unsure what suspension your truck has, a Hendrickson authorized dealer or a heavy-duty truck repair shop can inspect it and tell you. Do not guess — ordering the wrong suspension component wastes money and may not fit or function safely.
Where to buy Hendrickson suspension parts
Hendrickson parts are not sold at AutoZone, O'Reilly, or other national passenger-vehicle parts chains. Instead, you source them through heavy-duty truck dealers — Volvo, Peterbilt, Freightliner, Mack, and International all use Hendrickson suspensions and stock parts through their service departments.
You can also order directly from Hendrickson authorized distributors, which are regional or national suppliers that specialize in commercial truck parts. These distributors often have better pricing than dealerships if you buy in volume or are a fleet operator. A web search for "Hendrickson distributor near me" or "Hendrickson parts supplier [your state]" will show local options.
Some independent heavy-duty repair shops also stock common Hendrickson parts or can order them quickly. If you work with a shop regularly, ask whether they have a preferred supplier and what lead times are for parts you need.
Common Hendrickson suspension repairs and maintenance
Air suspension systems require periodic inspection of air springs, valves, and compressors. Air leaks are common and can cause the suspension to sag or fail to adjust properly. Replacing an air spring or valve typically costs more than a leaf spring repair but lasts longer if maintained.
Leaf spring suspensions wear out over time, especially under heavy load or rough roads. Broken leaves, cracked shackles, and worn bushings are typical failures. Replacing a single leaf is sometimes possible, but a full spring pack replacement is more common and more cost-effective long-term.
Shock absorbers on heavy trucks wear faster than on passenger vehicles because of the weight and constant movement. A worn shock reduces ride quality and can allow the suspension to bounce excessively, which stresses other components. Replacing shocks in pairs (front or rear) is standard practice.
Maintenance intervals depend on the truck's use. A truck running local delivery routes with moderate loads may need suspension service every 100,000 to 150,000 miles. A long-haul tractor under heavy load may need service sooner. Your truck's manual or a Hendrickson service center can recommend a schedule for your specific setup.
Cost and availability of Hendrickson parts
Hendrickson suspension parts range widely in price. A single shock absorber may cost $200 to $600. A complete air spring replacement can run $1,500 to $3,000 per axle. A full suspension overhaul on a heavy truck can exceed $5,000 to $10,000 depending on what is replaced and whether labor is included.
Availability varies by part and region. Common components like shocks and bushings are usually in stock or available within a few days. Specialized parts like air suspension compressors or integrated axle assemblies may take one to three weeks if they must be ordered from the factory.
If your truck is down and you need parts urgently, contact multiple distributors and dealers to compare lead times. Some shops keep emergency stock of high-wear items. Knowing your truck's suspension configuration in advance and planning maintenance before failure helps avoid long downtime.
When to replace versus repair Hendrickson suspension components
Repair is sometimes possible for leaf spring suspensions — a cracked leaf can be replaced without replacing the entire spring pack, and worn bushings can be pressed out and replaced. However, if multiple leaves are cracked or the spring is sagging, replacement is usually more cost-effective and safer.
Air suspension components are typically replaced as units rather than repaired. An air spring that leaks is replaced, not rebuilt. A faulty compressor or valve is swapped out. Repair shops may rebuild some components, but this is less common than replacement and may not be worth the labor cost.
A good rule: if the repair cost is more than 60 to 70 percent of the replacement cost, replace. If the component is old and other parts in the same system are wearing, replace the whole system rather than patching individual parts. A suspension failure on a loaded truck is dangerous and expensive, so erring toward replacement is justified.
Frequently Asked Questions
Can I use Hendrickson parts on a truck that did not come with them originally?
Sometimes, but not always. If your truck originally had a different suspension brand, swapping to Hendrickson requires that the mounting points, weight capacity, and brake integration match. A heavy-duty shop can assess whether a swap is feasible. Mixing suspension brands on the same truck is not recommended.
How do I know if my truck has a Hendrickson suspension?
Look at the suspension itself — Hendrickson components are stamped or labeled with the company name. Check your truck's service records or owner manual, which list the suspension type. A dealer or repair shop can also identify it from your VIN or by visual inspection.
What is the difference between Hendrickson air and leaf spring suspensions?
Air suspensions adjust automatically to load and provide a smoother ride, making them better for long-haul trucking and fragile cargo. Leaf springs are simpler, cheaper, and require less maintenance, making them common on local delivery trucks and older models. Air suspensions cost more upfront but may save money on cargo damage and driver fatigue over time.
Do I need to go to a Hendrickson dealer for service, or can any truck shop work on these parts?
Any may have access to heavy-duty truck repair shop can service Hendrickson suspensions. Hendrickson dealers have factory training and may have faster parts access, but independent shops often charge less and know the systems well. Choose a shop based on reputation, experience with your truck type, and price, not brand loyalty.
How long do Hendrickson suspension parts typically last?
Lifespan depends on use. Air springs may last 300,000 to 500,000 miles. Leaf springs often last 200,000 to 400,000 miles. Shocks typically need replacement every 100,000 to 150,000 miles. Heavy use, poor road conditions, and overloading shorten these intervals. Regular maintenance extends component life.