How could I purchase correct air spring bags for my truck/trailer ?

Please ask your dealer for the correct part number for your vehicle, with your VIN number.

Air Springs manufactered and tested by Torque Parts are made of higher quality components and thicker rubber which result in a much longer product life than our competitors.

What does Torque Parts do ?

Torque Parts is a U.S.-based company specializing in air springs for pickup trucks, semi-trucks, and trailers. We offer over 1,000 different parts under the Torque Parts. Our headquarters is in Chicago, IL, with multiple warehouses around the USA.

How can I reach to Torque Parts ?

You can contact Torque Parts LLC. Our dedicated team is available to provide assistance and address any questions you may have. We are committed to ensuring your satisfaction and look forward to helping you with your needs.

Torque Trailer Air Spring Bag Replacement For Firestone 9978 W01

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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$546.19

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Description

🚛 Elevate your ride with Torque’s toughest air spring bag — because your trailer deserves the best!

LEAK PROOF CONFIDENCE - Top-tier leak test ratio ensures long-lasting air retention and performance.
BUILT TO OUTPERFORM OEM - Rubber thickness and steel studs exceed industry standards for unmatched durability.
INDUSTRY FIRST WARRANTY - 3-year unlimited mile warranty backs your investment with unmatched peace of mind.
PRECISION FIT GUARANTEED - Compatible with Firestone 9978 and multiple Hendrickson models for seamless replacement.
HEAVY DUTY COMPOSITE PISTONS - Engineered for enhanced strength and reliability under pressure.

The Torque Trailer Air Spring Bag Replacement (model TR9978) is engineered with 4.5-5.00 mm thick rubber and 25% stronger 4140 grade steel studs, surpassing OEM standards. Designed for Firestone 9978 and Hendrickson C-28929/S-28929 compatibility, it features stronger composite pistons and the highest leak test ratio after assembly. Backed by an industry-first 3-year unlimited mile warranty, this air spring bag ensures durability, reliability, and a perfect fit for professional-grade trailer suspension upgrades.

Specifications

Manufacturer	Torque
Brand	Torque
Model	TR9978
Item Weight	15.97 pounds
Package Dimensions	12.1 x 11.9 x 11.8 inches
Item model number	TR9978
Is Discontinued By Manufacturer	No
Manufacturer Part Number	TR9978
OEM Part Number	Firestone 9978, Hendrickson C-28929, S-28929, Firestone W01-358-9978, Hendrickson C28929, S28929, Firestone W013589978
Special Features	25% stronger 4140 grade steel studs., 4.5 - 5.00 mm trick rubber that exceeds OEM requirements., Highest leak test ratio after final assembly., Stronger composite pistons.

Reviews

S**S

Work great

Love it

7.09.2023

T**T

They fit

Just installed so I’ll give them 3 stars for now

19.09.2022

A**W

One month

Bag stretched completely out like a hot dog then exploded.

10.07.2023

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