Freightliner Air Spring Bag – Replaces W01-358-9780 / W01-377-8537
Warranty Information
ROADWEST stands behind the parts we sell. Unless otherwise stated on the product page, your purchase is covered by a 1-Year Limited Warranty against manufacturing defects under normal use.
What’s covered
- Defects in materials or workmanship
- Premature failure caused by factory-related issues
What’s not covered
- Normal wear and tear, cosmetic aging, corrosion from environment/road salt
- Damage from improper installation, incorrect wiring, modifications, misuse, or accidents
- Labor costs (installation/removal), downtime, towing, or other indirect costs
How to file a claim
Contact us with:
- Order number
- Product name / SKU
- Clear photos or a short video showing the issue
If approved, ROADWEST will provide an appropriate resolution (replacement parts, replacement unit, or refund/credit).
Please do not send items back without return authorization.
For more details, see our Shipping Policy, Easy Return & Refund Policy, and Warranty pages.
Shipping & Returns
Most ROADWEST orders ship from our U.S. warehouses within 1–2 business days. Standard ground delivery in the contiguous United States is typically 1–3 business days, with freight service used for oversized or extra-heavy parts.
- Shipping area: United States only (no PO Boxes or international addresses).
- Processing time: In-stock items usually ship within 1–2 business days, Mon–Fri.
- Delivery: Standard ground or LTL freight depending on size and weight.
- Returns: Most unused items may be returned within 30 days of delivery, subject to inspection and our return guidelines.
- Costs: Original and return shipping are generally the customer’s responsibility, unless the issue is caused by ROADWEST (wrong item, damaged on arrival, etc.).
For full details, please review our Shipping Policy and Easy Return & Refund Policy before placing your order.
Restore and upgrade the suspension performance of your Freightliner truck with the High Soar 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 High Soar 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.
| Brand | High Soar |
|---|---|
| Part Type | Suspension Air Spring Bag / Air Ride |
| Vehicle Make | Freightliner Trucks – selected applications using listed cross numbers |
| Cross Reference |
Freightliner: 16-13810-000, 16-13810-001, 16-13810-002 Aftermarket / Firestone Style: W01-358-9780, W01-377-8537, 1R12-189, 1R12-303, 1R12-186 Cross numbers are for reference only – verify details before purchase. |
| Application Position | Suspension air spring (typically axle / rear suspension) |
| Material | High-density multi-ply rubber bellows with reinforced piston & hardware |
| Function | Supports vehicle load, absorbs shock & vibration, improves ride comfort and braking stability |
| Fit Type | Vehicle Specific Fit – match by OE / cross reference number |
| Color / Finish | Black air spring assembly |
| Included Components | 1 × Air Spring Bag (replacement for listed cross references) |
| Warranty | 1 Year Limited Warranty against manufacturing defects |
If you are unsure about compatibility, please verify the original air spring number on your Freightliner or consult a professional technician before purchasing.