Description

Overview

The Hendrickson 9580 Air Spring from Sampa is a complete rolling-lobe air suspension assembly with a rubber bellows, steel lower piston and internal bumper. Designed for compatible Hendrickson trailer suspensions, it replaces selected S-20127S steel-piston configurations.

This version features one upper mounting position and four lower mounting positions. Its steel piston distinguishes it from the plastic and aluminium piston versions in the same air spring family.

Features

• Complete air spring assembly with steel lower piston.
• Internal bumper incorporated into the assembly.
• Single upper mounting position and four lower mounting positions.
• Rolling-lobe construction for compatible Hendrickson trailer suspensions.

Specifications and Materials

• Manufacturer: Sampa
• Component: Complete air suspension spring
• Air spring family: 9580
• Type: Rolling lobe
• Construction: Rubber bellows with steel piston
• Internal bumper: Yes
• Specified height: 437mm
• Maximum extended height: 24.4″ (619.8mm)
• Minimum compressed height: 7.2″ (182.9mm)
• Maximum bellows diameter: 13.7″ (348mm)
• Top plate diameter: 10.2″ (259.1mm)
• Top mounting positions: 1
• Bottom plate diameter: 10.2″ (259.1mm)
• Bottom mounting positions: 4
• Bottom mounting centre measurement: 5.67″ (144mm)
• Quantity supplied: 1 complete air spring

Part number: SP559580-K.

For air spring construction and replacement information, refer to the Sampa trailer air spring technical guide

Compatibility and Fitment

Compare the original piston material, upper attachment and four-point lower mounting arrangement before selecting this replacement. Hendrickson 9580-family air springs are available with different piston constructions, which must suit the existing suspension installation.

This assembly supports selected Hendrickson HT-series trailer suspension configurations. Confirm the exact suspension model and existing air spring markings before fitting.

The following cross-reference numbers identify verified equivalent or replacement parts for this exact application. Confirm the selection-critical fitment details against the part being replaced before fitting.

S20127S, C20127S, W01-358-9580STEEL, 101021S434, 1R13-118STEEL, 1DK25C9580Steel, AB1DK25C9580Steel, 566ER9580, RML79580C

Related Parts

Check the related service parts and alternative configurations below against the existing suspension before ordering.

Compliance and Safety

Securely support the trailer and release suspension air pressure before removing the air spring. Inspect the piston mounting surface, upper attachment, lower fasteners and air connection for damage.

After installation, restore air pressure gradually and inspect for leaks, mounting security, correct ride height and clearance throughout suspension travel.

Trailer Applications

Workshops replace complete 9580-family air springs on compatible Hendrickson-equipped semi-trailers and heavy transport equipment. The steel-piston configuration is particularly relevant when the original lower piston also requires replacement.

Cross-reference and Suitability

This part cross-references to the following verified equivalent or replacement part numbers:

Why Choose ICS Trailers

The Hendrickson 9580 Air Spring belongs to a family with several piston configurations, making the lower assembly and mounting geometry important when selecting a replacement. ICS Trailers can assist with comparing existing Hendrickson and aftermarket part numbers, piston photos and mounting measurements to narrow down the correct assembly.

• Compare the steel, plastic and aluminium piston versions when repairing the complete suspension assembly.
• Send through your existing air spring markings and suspension details if you need help identifying the replacement and associated mounting components.

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