Automann Truck Trailer Suspension Parts Catalog: Complete Guide

The Automann truck trailer suspension parts catalog is a trusted resource for fleets, owner-operators, and repair shops across North America. Whether you need to replace a worn air spring, install new shock absorbers, or rebuild a trailing arm assembly, this catalog provides a comprehensive lineup of components designed to keep trailers on the road with minimal downtime. Unlike generic aftermarket lists, the Automann catalog is structured around OE-style replacements, making it easier to find the right part for common suspension systems like Hendrickson, Reyco, and Hutchens.

Why the Automann Catalog Matters

Heavy-duty trailers endure constant stress from load shifts, road vibrations, and weather extremes. Suspension parts wear out predictably, and using quality replacements is critical to maintaining ride height, axle alignment, and brake performance. The Automann catalog fills a specific niche: it offers parts that meet or exceed original equipment specifications without the premium price tag of some dealer-only brands. Many parts are manufactured to SAE and ASTM standards, which means they fit and perform like OEM parts.

Key Suspension Parts Available

The catalog covers every major component of a trailer suspension system. Here are the most commonly needed categories:

Air Springs and Air Bags

Automann offers a wide range of air springs for both primary and auxiliary suspensions. These come with standard air fittings and are available in single and double convoluted styles. The catalog includes compatibility notes for ride height and load capacity, so you can match the exact dimensions and pressure rating of the original part.

Shock Absorbers

Shock absorbers are essential for controlling oscillation and preventing bottoming out. The catalog lists both gas-charged and hydraulic shocks, with extended and compressed lengths clearly marked. For severe-service applications, there are heavy-duty options with larger bore diameters.

Bushings and Pivot Points

Rubber and polyurethane bushings are available for shackles, equalizers, and spring eyes. The catalog provides internal and outside diameters, as well as hardness ratings. Using the correct bushing compound can extend service life and reduce noise.

Suspension Hangers and Brackets

These structural components must resist corrosion and fatigue. Automann offers hangers for both mechanical and air-ride systems. The catalog includes bolt patterns and material thicknesses, which is crucial when replacing damaged brackets.

Axle Hardware and Alignment Parts

From U-bolts to torque arms, the catalog covers axle attachment hardware. Many items come as kits, which simplify ordering and ensure all necessary fasteners are included. For adjustable suspensions, you can find cam bolts and eccentric bushings.

How to Use the Catalog Effectively

Navigating the Automann catalog is straightforward if you know what to look for. Follow these steps to minimize errors:

Identify Your Suspension System

First, determine the make and model of your trailer suspension. Common brands include Hendrickson (Airtek, INTRAAX), Reyco (Granning), SAF-Holland, and Hutch (Hutchens). The catalog groups parts by system, so knowing the model helps you jump to the correct section.

Locate the Part Number

Every component in the catalog has a unique Automann part number. Try to find the original part number from the worn part, or use cross-reference tables if you have an OEM number. The catalog includes OE cross-references for most items, reducing the guesswork.

Verify Dimensions and Mounting

Don't rely solely on part numbers—check key measurements like overall length, bolt hole spacing, and thread size. For air springs, confirm the folded height and air inlet location. A quick visual comparison can save a return trip.

Check Application Notes

Some parts are designed for specific axle configurations or load ratings. The catalog often has footnotes that clarify usage. For example, a shock may fit only certain ride heights, or a bushing may require a specific press fit.

Cross-Referencing and Compatibility

One of the strengths of the Automann catalog is its extensive cross-referencing. Many parts supersede several OEM numbers, making it easier to stock fewer SKUs. For instance, a single Automann air spring might replace six different OEM numbers. This simplifies inventory management for shops that work on multiple trailer brands.

However, always cross-check with your actual part, especially for suspension systems that have been modified or upgraded. Trailers that have had a suspension swap may no longer match the original catalog listing. In those cases, measure the existing component and compare with the dimensions provided.

Maintenance Tips for Longer Suspension Life

Using the right parts from the catalog is just one part of a good maintenance strategy. Here are practical tips:

• Inspect bushings regularly: Worn bushings cause wheel misalignment and accelerate tire wear. Replace them at the first sign of cracking or elongation.
• Torque fasteners to spec: U bolts, shackle bolts, and pivot pins must be tightened to manufacturer torque values. Loose hardware leads to broken brackets.
• Keep air springs clean: Debris and oil can deteriorate rubber. Wipe air springs with a mild soap solution regularly.
• Check shock absorber seals: A leaking shock should be replaced in pairs to maintain consistent damping.

Final Recommendation

For fleet managers and repair technicians who need a reliable source of trailer suspension parts, the Automann catalog is a practical choice. It offers good coverage across major suspension systems, with clear part numbers and dimensions. Start by verifying your suspension model and cross-referencing the original part number. For common replacements like air springs and bushings, Automann provides a cost-effective alternative without sacrificing quality. Keep the catalog handy for your next suspension rebuild—it will save time and reduce the risk of ordering the wrong part.