Freightliner Air Spring Bag – Replaces W01-358-9780 / W01-377-8537

Restore and upgrade the suspension performance of your Freightliner truck with the ROADWEST Air Spring Bag, engineered as a heavy-duty replacement for select OEM and aftermarket air ride systems. This air spring is designed to replace popular Freightliner and Firestone-style part numbers, including W01-358-9780, W01-377-8537, 1R12-189, 1R12-303, 1R12-186, Freightliner 16-13810-000, 16-13810-001, 16-13810-002.

Manufactured from imported high-density rubber with reinforced bellows, this air ride exceeds typical OEM requirements. The robust construction offers greater durability and load performance than many standard air suspension bags, helping your truck maintain proper ride height and stability under heavy loads.

By effectively absorbing road shocks and vibrations, the ROADWEST air spring reduces harsh impacts transmitted to the chassis and cab. This improves ride comfort, driver fatigue, and braking stability, making it an ideal replacement when the original air bag is leaking, cracked, or worn out.

• Replacement for Freightliner applications – fits suspensions using cross numbers Freightliner 16-13810-000, 16-13810-001, 16-13810-002.
• OE cross references – interchangeable with W01-358-9780, W01-377-8537, 1R12-189, 1R12-303, 1R12-186 (verify specifications before purchase).
• Premium quality air ride – high-density rubber bellows and robust piston design provide excellent load capacity and extended service life.
• Safety & comfort – air spring bags help prevent collision impact transfer, reduce vibration and support more controlled braking.
• Easy installation – designed as a direct replacement when matched correctly by OE / cross reference number.
• Warranty backed – includes a 1-year warranty and 100% quality assurance for peace of mind.

Key air spring components:

• Piston – lower section of the air spring, typically made from aluminium, steel or composite plastic. Provides the lower mounting arrangement via threaded holes or studs.
• Girdle hoop (centre ring) – ring between the convolutions of a convoluted-type air spring to help maintain shape and stability.
• Bellows – the heart of the air spring, with multiple plies: inner layer, two plies of cord-reinforced fabric and an outer protective layer for strength and flexibility.
• Bumper (bump stop) – solid moulded rubber fail-safe component to help protect the vehicle and suspension in the event of sudden air pressure loss.

Fitment reminder:

• This is not a universal air spring.
• Always check the part number on your original air bag or suspension specification.
• Only purchase if your suspension uses one of these numbers: 16-13810-000, 16-13810-001, 16-13810-002, W01-358-9780, W01-377-8537, 1R12-189, 1R12-303, 1R12-186.
• If you are unsure, consult your mechanic or parts manager before ordering.

If you are unsure about compatibility, please verify the original air spring number on your Freightliner or consult a professional technician before purchasing.