Freightliner Cascadia/Columbia/Century Air Spring Bag – Replaces 18-40977-000 / 18-52651-000 / W02-358-7215

Name: Freightliner Cascadia/Columbia/Century Air Spring Bag – Replaces 18-40977-000 / 18-52651-000 / W02-358-7215
Brand: ROADWEST
Price: 26.13 USD
Availability: InStock
Rating: 4.75 (4 reviews)

Vehicle Fitment

Freightliner Cascadia Freightliner Columbia Freightliner Century Class ST

Color 1 PC 2 PCS

$26.13 USD

$26.13 USD ~~$27.50 USD~~

QC VERIFIED Built for Truckers. We stock it, inspect it, and verify fitment - so you get the right part first time, for less.

Fully secure checkout
Trusted by thousands
Rated and reviewed

Shop safely

Secure your shopping experience with various safe and trusted payment methods.

Shop safely with us

DESCRIPTION

Up to 5% off

Restore ride comfort and control on your Freightliner with the ROADWEST 2 Pcs Air Spring Bag Kit. This heavy-duty air suspension replacement set is engineered for Freightliner Cascadia, Columbia and Century Class ST applications, helping reduce vibration, improve stability and keep your truck riding level under load.

Each air spring bag is designed as a direct replacement for OEM part numbers 18-40977-000, 18-52651-000, 7215 and W02-358-7215, allowing you to swap out worn or leaking bags without modification. The bellows are built from imported high-density rubber that exceeds standard OEM requirements, providing greater durability and better load performance than typical air suspensions.

By absorbing harsh road shocks and vibrations, the ROADWEST air spring bags help protect drivers and passengers from impact, while improving braking stability and extending the life of other suspension components. This 2-piece kit is ideal for maintenance on fleet trucks and owner-operator rigs alike.

Direct-fit replacement for Freightliner Cascadia, Columbia and Century Class ST using OEM numbers 18-40977-000, 18-52651-000, 7215 and W02-358-7215.
High-density multi-ply rubber bellows exceed OEM specs for enhanced durability and load-carrying capability.
Improves comfort & safety by reducing vibration, limiting collision impact and helping keep ride height and braking more stable.
Heavy-duty construction designed for long-haul, regional and vocational Freightliner applications.
2-piece kit allows you to replace air springs in pairs for more consistent ride and performance.
Backed by a 1-year warranty with 100% quality assurance and responsive customer support.

Brand	ROADWEST
Product Type	Air Spring Bag / Air Ride Suspension (2-Pack)
Application	Freightliner Cascadia, Columbia, Century Class ST Suspension
Vehicle Make / Models	Freightliner Cascadia; Freightliner Columbia; Freightliner Century Class ST (verify by OEM number)
Cross Reference	18-40977-000; 18-52651-000; 7215; W02-358-7215
Material	High-density reinforced rubber bellows with metal piston components
Function	Supports ride height, absorbs vibration, improves ride comfort and braking stability
Quantity	2 × Air Spring Bags (Pair)
Fit Type	Vehicle Specific Fit – Freightliner trucks using listed OEM part numbers
Special Features	Enhanced load performance, reduced vibration, heavy-duty construction for commercial use
Warranty	1-Year Warranty with 100% Quality Assurance
Included Components	2 × ROADWEST Air Spring Bags for Freightliner Cascadia / Columbia / Century Class ST
Important Note	Please confirm your OEM part number and truck model before purchase to ensure proper fitment.
Manufacturer	ROADWEST

Shipping Policy

Most ROADWEST orders are processed from our U.S. warehouses within 1–2 business days (Monday–Friday, excluding major U.S. holidays).

We currently ship within the United States only and do not deliver to P.O. Boxes, APO/FPO/DPO addresses, or international addresses.

Shipping Area: United States only
Process Time: In-stock items are usually processed within 1–2 business days (Mon–Fri, excluding major U.S. holidays)
Delivery Method: Standard ground for most items; LTL freight for oversized or extra-heavy parts
Delivery Time: After shipment, delivery typically takes 3–7 business days, depending on item size, destination, and carrier performance
Returns: Most unused items may be returned within 30 days of delivery, subject to inspection and our return guidelines

For full details, please review our Shipping Policy and Easy Return & Refund Policy before placing your order.

Warranty

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.