FLOVENTIS Cab Sleeper Air Spring Bags for Freightliner Century Class & Argosy — 2-Pack, Heavy-Duty Rubber with Iron Fittings

FLOVENTIS cab sleeper air spring bags are a direct-fit replacement designed to restore ride height and cushion the cab on Freightliner Century Class and Argosy trucks.

These replacement air springs combine heavy-duty rubber with iron fittings to deliver consistent support for cab sleeper suspensions. Built to match common OEM part numbers, they slip into the factory location without modification and are intended to provide dependable performance for vocational and long-haul applications. The set includes two air spring bags engineered for compatibility with Freightliner systems and related makes that share the same mounting geometry.

How do these air spring bags improve cab comfort and ride stability?

By reestablishing proper air suspension geometry, the FLOVENTIS cab sleeper bags help absorb road shock and maintain cab level under load. That reduces vibration transmission into the sleeper area and improves driver comfort during long runs.

• Replaces worn or leaking OEM air springs to restore ride height
• Rubber construction provides consistent damping and durability
• Helps maintain proper alignment of cab suspension components

Will these parts fit my Freightliner or other truck models?

These air spring bags are made to fit Freightliner Century Class and Argosy models and match several common reference numbers. They are described as direct replacements for the listed OEM part numbers, but double-checking your vehicle’s part reference ensures a correct match before purchase.

• Compatible with Freightliner Century Class and Argosy cab sleeper applications
• Reference numbers include Freightliner 18-29919-000 and W02-358-7206
• Also cross-referenced to ContiTech SC31W206, Kenworth T680, Link 1104-0007, Peterbilt 579

What should I expect from installation and fitment?

The FLOVENTIS units are designed for in-situ replacement of the original air spring without modification, which simplifies installation for technicians familiar with cab suspension work. Standard cab suspension tools and basic mechanical skills are typically sufficient.

• Direct-fit replacement—no drilling or alterations required
• Use standard tools and follow OEM torque and safety procedures
• Inspect fittings and lines for wear while installing to ensure airtight connections

How durable are these air springs and what support does the brand provide?

Constructed from rugged rubber with iron components, these air bags are built to resist wear and provide steady performance in demanding trucking conditions. FLOVENTIS also offers customer support to address fitment questions or concerns after purchase.

• Heavy-duty materials for consistent surface wear and resistance to road hazards
• Engineered to mirror original equipment specifications for longevity
• Customer service available for assistance with part selection and post-sale help

Who is this for: These FLOVENTIS cab sleeper air spring bags are intended for truck owners, fleet maintenance technicians, and independent repair shops replacing worn or leaking cab air springs on Freightliner Century Class and Argosy models — or on compatible chassis using the referenced OEM numbers. Choose this set if you need a direct-fit, durable replacement that restores cab ride height and helps improve driver comfort on long-haul or vocational trucks.