Description

Overview

Air Spring Assembly ROR Stefair 11T Underslung supports stable ride height on underslung 11 tonne air suspensions used across many trailers and some rigid applications. A healthy air spring helps the suspension track evenly, which can reduce chassis roll and uneven tyre wear. If an old unit leaks or chafes, replacing the complete assembly helps bring the system back to consistent operation.

Features

This assembly is intended for everyday reliability in harsh road conditions.

• Helps maintain consistent ride height under load
• Reduces vibration transfer into the chassis
• Suited to heavy-duty air suspension service
• Designed to match common Stefair 11T underslung setups

Specifications and Materials

Air Spring Assembly ROR Stefair 11T Underslung uses a reinforced rubber bellows intended for commercial suspension duty.

• Maximum operating pressure: 7 Bar (100psi)
• Operating temperature range: -40°C to +70°C
• Application: air suspension spring assembly
• Suitability: ROR Stefair 11 tonne underslung

Part number: SP0029A.
See the Firestone reversible sleeve air spring technical sheet

Compatibility and Fitment

This cross-reference listing means this part is a suitable replacement for the part numbers and applications shown. Some changes in installation may be required. 810 MB, 810MB, 810, 1T19L-7, W01 M58 6345, 1T19L7, W01M586345, 1R14-716, 1R14716, 506 243, 506243, 785 168, 212 156 32, 21215632, 2120 8032, 21208032, 2121 5632, P10.810.C, P10810C, 2 228 0002 00, 2228000200, US 0062, US0062, US 07337, US07337, 1 384 273, 1384273, 785168

Compliance and Safety

Air suspension components operate under pressure, so depressurise the system and support the chassis safely before removal. Torque fasteners to the suspension maker’s specification, then check for air leaks after inflation. Keep airlines clear of sharp edges as well to help prevent repeat failures.

Trailer Applications

Air Spring Assembly ROR Stefair 11T Underslung suits ROR Stefair 11T underslung configurations found on semi trailers, dollies, and heavy rigid trailers. It also commonly appears on general freight, curtainsider, and tipper bodies where stable ride height supports load control.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

 
Then, use your suspension plate details to confirm fitment before installation.

Why Choose ICS Trailers

ICS Trailers can help you match the right configuration before it goes on the vehicle. We also carry a wide range of suspension components so you can keep downtime low.
Browse Suspension parts at ICS Trailers