Automann Suspension Parts: A Complete Guide for Heavy-Duty Trucks and Trailers

Automann is a well-known brand in the heavy-duty trucking industry, supplying a wide range of replacement suspension parts for commercial vehicles. From leaf springs to air springs, shock absorbers to bushings, Automann offers components designed to restore ride quality, stability, and load-carrying capacity. Whether you're a fleet manager, an owner-operator, or a shop technician, understanding the different Automann suspension parts available can help you make informed decisions for maintenance and repairs.

What Are Automann Suspension Parts?

Automann suspension parts are aftermarket components engineered to fit heavy-duty trucks, trailers, and buses. The company specializes in suspension systems that meet or exceed OEM specifications, providing a reliable alternative to original manufacturer parts. Automann's product line covers everything from individual springs to complete suspension kits, ensuring compatibility with popular truck and trailer models.

Unlike generic parts, Automann components are designed with specific applications in mind. They undergo rigorous testing for durability and performance, making them a trusted choice for shops and fleets across North America. Whether you need to replace a worn-out leaf spring on a Kenworth or install new air springs on a Freightliner, Automann has a solution.

Why Choose Automann Suspension Parts?

Several factors make Automann suspension parts a popular choice in the heavy-duty market:

• Quality Control: Automann parts are manufactured to strict tolerances, using high-grade steel and rubber compounds. This ensures consistent performance and longevity.
• Wide Availability: Because Automann is a major aftermarket brand, many parts distributors carry their products, making them easy to find at local heavy-duty stores or online catalogs.
• Cost-Effective: While OEM parts can be expensive, Automann offers competitively priced alternatives without sacrificing quality. This makes them a smart choice for budget-conscious repairs.
• Application Coverage: Automann lists parts for virtually all major truck and trailer brands, including Peterbilt, Mack, Volvo, International, and more. Their catalog includes part numbers cross-referenced to OEM numbers for easy identification.

Common Types of Automann Suspension Parts

Automann produces a comprehensive lineup of suspension components. Here are the most common types and what they do:

Leaf Springs

Leaf springs are the backbone of many heavy-duty suspensions, especially on older trucks and trailers. Automann offers both single-leaf and multi-leaf springs, each designed to handle specific load ratings. The springs are made from alloy steel and are shot-peened to reduce fatigue. When replacing leaf springs, it's crucial to match the correct length, arch, and capacity. Automann's catalog provides detailed specifications, including the number of leaves and the spring's rated weight.

Air Springs (Air Bags)

Modern trucks often use air suspension for a smoother ride and adjustable ride height. Automann air springs are available as complete assemblies (including the bellows and piston) or as separate components. They fit common air suspension systems like Hendrickson, Neway, and Reyco. Air springs are critical for load-leveling and reducing vibration. When selecting an Automann air spring, check the collapsed and extended lengths, as well as the air inlet type.

Shock Absorbers

Shock absorbers control spring oscillation and improve tire contact with the road. Automann offers both gas-charged and hydraulic shocks for heavy-duty applications. The shocks are calibrated for the weight and damping requirements of trucks, trailers, and buses. They come with bushings and mounting hardware for easy installation. When replacing shocks, consider the vehicle's front or rear application, as well as the mounting style (eyelet or pin).

Bushings and Pins

Suspension bushings isolate noise and vibration while allowing controlled movement. Automann's line includes urethane and rubber bushings for spring eyes, shackles, and equalizers. They also offer hardened pins and fasteners designed to resist wear. Worn bushings can cause alignment issues and irregular tire wear, so replacing them with Automann parts restores proper geometry.

Spring Hangers and Brackets

These structural components support the suspension system. Automann manufactures spring hangers, shackles, and brackets from heavy gauge steel. They often come with reinforcing ribs to prevent cracking. When a hanger is bent or corroded, replacing it with an Automann part ensures the suspension geometry remains correct.

Hardware Kits

For those performing a full suspension rebuild, Automann offers hardware kits that include all necessary bolts, nuts, washers, and bushings. This simplifies the ordering process and ensures you have the right parts for the job. These kits are typically vehicle-specific, so verify the exact model and year.

Compatibility and Fitment

Automann parts are engineered to be direct replacements for OEM components. Most products include a reference to the original part number they replace. When shopping for Automann suspension parts, always confirm the following:

• Vehicle Make, Model, and Year: e.g., 2020 Peterbilt 579
• Suspension System Type: e.g., Hendrickson Airtek or Reyco 21B
• Position: Front or rear, driver or passenger side
• Load Rating: Single axle or tandem, weight capacity

Automann catalogs and many online dealer sites allow you to search by these criteria. If you're unsure, consult a parts professional who can cross-reference your OEM numbers.

Tips for Selecting Automann Suspension Parts

Choosing the right suspension parts is crucial for safety and performance. Keep these tips in mind:

• Inspect Before You Buy: Check for other worn components. For example, if replacing a leaf spring, also check the shackles and bushings.
• Match the Ride Height: For air suspension, the wrong collapsed length can cause constant air bleed or bottoming out. Measure your existing air spring when deflated.
• Consider the Environment: If your truck operates in corrosive conditions (salt, sand), choose parts with appropriate coatings. Automann offers some components with painted or plated finishes.
• Follow Torque Specifications: Many suspension failures are due to improper torque. Automann parts come with recommended torque values; use a torque wrench during installation.
• Use Genuine Automann Parts: While there are generic alternatives, Automann parts are designed to fit right and last. Stick with the brand for consistency.

Installation and Maintenance Considerations

Installing suspension parts requires proper tools and knowledge. If you're not experienced, hiring a professional is recommended. However, if you're competent, here are general steps for leaf spring replacement:

1. Safely jack up the vehicle and support the frame.
2. Release tension from the suspension by lowering the axle.
3. Remove the U-bolts and the bolts securing the spring to the hangers.
4. Install the new Automann spring using new bushings and hardware.
5. Torque all fasteners to specification.
6. Lower the vehicle gradually and recheck torque after a short test drive.

For air springs, be careful when removing old ones—they may still be pressurized. Depressurize the system first. After installation, check for leaks with soapy water.

Regular maintenance extends the life of any suspension. Lubricate bushings and pins if they have grease fittings. Inspect for cracks, rust, or deformation during every preventive maintenance interval. Replace worn parts promptly to avoid damaging other components.

Final Recommendation

Automann suspension parts offer a dependable balance of quality and affordability for heavy-duty trucks and trailers. To get the most out of your purchase, always verify fitment using your vehicle's VIN or OEM part numbers, and choose the correct type for your suspension system. For routine replacements like leaf springs, air springs, and bushings, Automann is a solid choice that keeps your rig roadworthy without breaking the bank. If you're planning a major suspension overhaul, consider buying a complete kit to ensure all components match and work together. Remember to follow proper installation procedures and maintenance schedules—your truck will thank you with better ride and longer tire life.