Description

Overview

The GUOMAT trailer air spring restores load support and suspension travel in heavy trailer air suspension systems with the matching mounting pattern. The reversible sleeve assembly combines a rolling-lobe rubber bellows, metal upper plate and composite piston. Selection depends on the mounting centres, air inlet arrangement, plate and piston diameters, and working height.

Features

• Complete reversible sleeve air spring assembly
• Composite piston with metal upper mounting plate
• Operating height range from 152 mm compressed to 381 mm extended
• Maximum outside diameter of 325 mm

Specifications and Materials

The assembly has a 229 mm upper plate, 248 mm piston and 140 mm mounting-stud centres. The upper layout uses one combination mounting stud and air inlet beside a separate stud. Supplied as one complete air spring assembly. Air fittings and loose mounting hardware are not included. Check the port and thread arrangement before installation. Part number: 1T9105.

See the Firestone heavy-duty air spring guide for air spring identification and application guidance

Compatibility and Fitment

Compare the removed air spring before ordering. Confirm the upper plate diameter, piston width, mounting-stud spacing, air port position, thread arrangement and installed ride height. Similar-looking trailer airbags can use different piston shapes, base orientations or mounting layouts and will not interchange safely.

These cross-references show where this part replaces the part numbers and applications listed. Some installations may need minor changes. W01-358-9105, W013589105, W01-358-5508, W013585508, 1R12-132, 1R12132, 1R12-152, 1R12152, 9 10-12 A 319, 91012A319, S1245, 5065, 1003589105C, AS-0015, AS0015, SP559105-KP, SP559105KP, 8319

Compliance and Safety

Support the trailer securely and exhaust the suspension air before removing the old spring. Inspect the air line, fitting and mounting faces for damage. Tighten the mounting hardware to the suspension manufacturer’s specification, then check for leaks, bellows rubbing and adequate clearance through the full suspension travel.

Trailer Applications

This GUOMAT trailer air spring suits heavy trailer suspension repairs where a reversible sleeve assembly with this mounting layout is required. Use the old bellows markings and measured mounting layout rather than appearance alone.

Cross-reference and Suitability

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

Why Choose ICS Trailers

Air springs can be difficult to identify once labels are worn or damaged. Send through the old bag markings, clear photos, top plate and piston measurements, stud spacing and air port position when you need help narrowing down the correct replacement.

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