Firestone W01-377-8536 Air Spring – Freightliner Cascadia Columbia Century FLD

The Firestone W01-377-8536 is a genuine OEM rolling lobe air spring designed for Freightliner Class 8 trucks with air ride suspension systems. Manufactured by Firestone Industrial Products, the world's leading supplier of air springs with over 80 years of experience, this air spring features an aluminum piston base for superior durability and corrosion resistance. It provides critical functions including cushioning the chassis from road shock, maintaining proper axle spacing and alignment, and supporting heavy loads while delivering a smooth, comfortable ride.

Signs You Need a New Air Spring

• Visible cracks, dry rot, or deterioration in the rubber bellows
• Air leaks causing the suspension to sag or not maintain ride height
• Cab or chassis sitting lower than normal or tilting to one side
• Harsh ride quality or excessive vibration transmitted to the cab
• Uneven tire wear from improper axle alignment
• Hissing sounds indicating air escaping from the spring

Specifications

Cross References

This part replaces or is equivalent to the following part numbers:

• Firestone: W01-358-9781, 9781, 8536, 8537, W01-377-8537, W01-377-9781, W01-377-8529, W01-377-8527
• Freightliner: 681-320-0017, A16-14004-000, A16-14004-001, A16-17574-001, A16-17574-002, 16-13801-000, 16-13840-000, 16-14004-000, 16-14377-000, 16-15595-000, 16-16773-000, 16-17575-000, 16-19468-000
• Goodyear: 1R12-603, 1R12-186, 1R12-189, 1R12-303, 1R12-1082
• Contitech: 910S-16A382, 64266
• Triangle: AS-8382, AS-8999, 8382
• Automann: 566.ER9781, AB1DF23-9781
• Alliance: ABP N32 019781
• Dayton Parts: 452-9781
• Midwest: WA01-9781C
• Euclid: FS9781, E-FS9781
• Road Leveler: RL97800
• Loadguard: SC2750
• Volvo: 85101151
• HDV: HDV9781

Applications

This air spring fits Freightliner Class 8 trucks with air ride rear suspension:

• Freightliner Cascadia: 2008-2020
• Freightliner Columbia: 2001-2020
• Freightliner Century Class: 1996-2011
• Freightliner Classic/Classic XL: 1990-2010
• Freightliner Coronado: 2001-2020
• Freightliner FLD112: 1991-2007
• Freightliner FLD120: 1988-2011
• Freightliner FLC112: 1985-2001
• Freightliner FLC120: 1981-1991

Why Choose Genuine Firestone Air Springs

• OEM Quality: Firestone is the original equipment manufacturer for major truck OEMs including Freightliner
• Proven Durability: Engineered with high-strength rubber compounds and precision-manufactured aluminum pistons
• Exact Fit: Designed to meet original equipment specifications for trouble-free installation
• Industry Leader: Over 80 years of air spring innovation since introducing the Airide™ Air Spring in 1938
• Load Leveling: Automatically adjusts to changes in load for consistent ride height
• Ride Comfort: Absorbs road shock and reduces vibration for improved driver comfort on long hauls

Important: Air springs should be replaced in pairs to ensure balanced suspension performance. Verify the cap ID (3191), piston ID (9604), and mounting dimensions match your existing air spring before ordering. Always confirm your OEM part number for proper fitment.

Handling Time
At All Pro Truck Parts we do our best to ship all orders same day for orders placed before 12:00pm Central Standard Time. Same day shipment is never guaranteed. For standard UPS or USPS shipping, you will typically receive your package in 1 - 5 business days. Shipping times are never guaranteed and All Pro Truck Parts is not responsible for lost or delayed shipments by the carrier. Carrier times vary by distance from shipment origin and may change without prior notice. Shipping price is calculated from package dimensions and weight. Calculated rates for orders will be available at checkout. Orders placed after 12:00pm CST on Fridays will not be fulfilled until the following business day, Monday morning barring a holiday.

Next Day Air Shipments
The cutoff time for UPS Next Day Air is 12:00PM. If you have missed the cutoff time but would still like to place an order for Next Day delivery, please send us a text message or email. We can try to accommodate and ship your order from another warehouse.

Incorrect Shipping prices
All Pro Truck Parts reserve the right to cancel any order, in the event shipping rates are calculated incorrectly at checkout. We will notify you at your provided contact information to give you the option to pay the correct amount, or allow you to cancel the order for a full refund. 

Free Shipping
Select products qualify for free shipping. Qualifying product groups can change without notice. Free shipping will be shipped via UPS Ground, USPS First Class or USPS Priority Mail.  

Domestic Shipping Services

• USPS Domestic Shipping Services
• USPS Priority Mail
• USPS First Class Package
• USPS Ground Advantage
• USPS Priority Mail Express
• UPS Shipping Services
• UPS Ground
• UPS 2nd Day Air A.M. (commercial addresses only)
• UPS 2nd Day Air
• UPS 3 Day Select
• UPS Next Day Air Saver
• UPS Next Day Air
• UPS Next Day Air Early
• UPS Standard

International Shipping Services

• USPS International Shipping
• USPS First Class Package International
• USPS Priority Mail Express International
• USPS Priority Mail International
• UPS International Shipping
• UPS Worldwide Expedited
• UPS Worldwide Express Plus
• UPS Worldwide Express
• UPS Worldwide Saver

Returns
All Pro Truck Parts offers lifetime returns for any reason on NEW, UNOPENED items in the original packaging with exceptions. (See sale items and special order items).
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Used items (if applicable)
Items marked as USED at the time of sale will be accepted for return up to 30 days from the date of sale. 

Defective items (if applicable)
Defective items under manufacturer warranty will be eligible for return, as well as a full refund for the total amount paid by the customer. The following criteria must be met to be eligible. (a). The part is under manufacturer warranty (b). the manufacturer has determined the part defective for the purchased application. 

Refunds (if applicable)
Once your item is returned and received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 7 business days. For order placed by phone through a card terminal, you must call in to initiate the refund. 

Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted.
Next contact your bank. There is often some processing time before a refund is posted.
If you’ve done all of this and you still have not received your refund yet, please contact us at sales@allprotruckparts.com.

Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded. 

Special Order Items (if applicable)
Special order items may be eligible for a refund. The decision to accept a special order item for refund is left solely to the All Pro Truck Parts management team. 

Exchanges (if applicable)
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at sales@allprotruckparts.com and send your item to: All Pro Truck Parts, 3948 Interstate 30 W, Caddo Mills TX 75135, United States.

Shipping
To return your product, you should mail your product to: All Pro Truck Parts, 3948 Interstate 30 W, Caddo Mills TX 75135, United States

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

If you are shipping an item over $75, it is advised that you use a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.
For returned items designated as "Free Shipping", any items shipped to the customer in which the customer did not pay shipping. All Pro Truck Parts will recover the cost of shipping to the customer's address from the refundable amount owed to the customer on the return and inspection of the item.