Air Spring Freightliner W01-358-9781, 1R12-603, 9781

Description

Restore the suspension performance of your Freightliner with this heavy-duty replacement air spring. The W01-358-9781 air spring replaces worn or leaking bags and brings back correct ride height, stability, and load support.

If your current air spring is cracked, losing air, or sitting uneven, this replacement helps prevent extra frame stress, rough ride, and premature component wear. It installs in the factory location and matches the original rolling-lobe design.

What This Air Spring Does

Your truck’s air spring handles weight support and ride balance. When it fails, you may notice:

• Rear suspension sag

• Excess bouncing or vibration

• Uneven tire wear

• Poor handling or body roll

• Truck leaning to one side

A new air spring restores smooth operation and helps protect your shocks, alignment, and suspension arms.

Key Features

• Direct replacement for W01-358-9781

• Matches 1R12-603 and 9781 interchange

• Heavy-duty rolling-lobe design

• Stable ride control under full load

• Reinforced rubber construction

• Factory-style fit and install

• Built for commercial use and long road hours

Cross-Reference Numbers

This air spring replaces the following part numbers:

Contitech
161007
64266
9 10S-16 A 382

Firestone
16-17575-000
9781
W013589781
W01-358-9781
W013778527
W01-377-8527
W013778529
W01-377-8529
W013778536
W01-377-8536
W013779781
W01-377-9781
W013779783
W01-377-9783

Freightliner
1613840000
16-13840-000
1614004000
16-14004-000
1617575000
1619466000
16-19466-000
6813200017
681-3200-017
681-320-0017
A1614004000
A16-14004-000
A1614004001
A16-14004-001
A1615443000

Goodyear
1R121082
1R12-1082
1R12603
1R12-603

Hendrickson
8536

Loadguard
SC2750

Volvo
85101151

Why Replacing This Air Spring Matters

A damaged or leaking air spring can cause:

• Uneven stance or truck lean

• Harsh ride and vibration

• Stress on shocks and bushings

• Poor handling, especially when loaded

• Higher maintenance costs

Replacing it keeps your truck level, stable, and protected.

Fitment

Fits Freightliner suspensions using the W01-358-9781 / 1R12-603 style air spring.
If you need confirmation, we can verify fitment by part number or VIN.

Pickup & Contact Information

📍 Alsip, Illinois Location
5120 W 125th Pl, Alsip, IL 60803
📞 708-866-2000
💬 708-910-4096
📧 info@truckzoneparts.com

📍 Fort Myers, Florida Location
17121 Cam Ct, Fort Myers, FL 33967
📞 239-342-7777
💬 239-341-7777
📧 info_fl@truckzoneparts.com

Both locations offer fast pickup and full support.