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2 pack of TORQUE Trailer Air Spring Bag (Replaces Firestone 9978, W01-358-9978, Hendrickson S-28929, C-28929) (2 x TR9978)

Free shipping on orders over $29.99

$261.80

$ 99 .00 $99.00

In Stock

1.Color:2 Pack


  • QUALITY - Easy to identify part number permanently engraved on the rubber. 4.5 - 5.00 mm thick rubber that exceeds OEM requirements. 25% stronger 4140 grade steel studs. Stronger composite pistons. Highest leak test ratio after final assembly.
  • SPECS - Extended Height: 18.00" // Compressed Height: 7.90" // Top Plate Width: 9.00" // Piston Width: 10.16" // Weight: 15.10 lbs
  • REPLACEMENT FOR - Hendrickson C-28929, S-28929 // Firestone W01-358-9978 // Triangle AS-8959 // AS9978, HDV9978, HD9978 // Sampa SP559978-KP
  • WARRANTY - Thanks to our superior quality and customer service we started offering our customers industry's first 3-year unlimited mile warranty on our rolling lobe / reversible sleeve air springs. When you get your air spring, please register it through Torque Parts website.
  • FITMENT - Please, call your dealer and ask for the part number. Then, check out if this air bag replaces it. Or, see the diagram picture and make sure all specs match with your air bag. ***Buying an air bag by make and model is one of the most common mistakes. Please, do not buy it by make and model.***



Product Description

Air Spring Bag

Quality You Can Trust

Experience

As Torque Parts, we have been in this business for many years, building a solid reputation through dedication and expertise. Our extensive experience ensures you can trust us to provide high-quality parts and reliable service. We are committed to exceeding your expectations.

Air Spring Bags
  • 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.

  • 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.

  • 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.


Gs Deol
Reviewed in the United States on February 15, 2025
 
Jorge Salinas
Reviewed in the United States on January 3, 2025
I bought 4 on March 2021 for a Utility Reefer Trailer, About to Replace them after 4yrs !!They Still on Trailer and i haul 80k Produce Loads Tx to Ny 3 times a Month. They are More Expensive Now that when i bought them but still a lil cheaper than any Local Utility or Any Truck Parts Store
Veaux
Reviewed in the United States on August 4, 2023
I’m using pair of them for a one month period , few loads war 44k lbs
Timothy Quilt
Reviewed in the United States on August 22, 2022
Quality seems good but I just installed them, we’ll see how they hold up under a heavy load
Jose
Reviewed in the United States on October 19, 2022
Good quality for half the price of the name brand bags. Got them to replace a set of c-28929 air bags on a trailer, worked great
Nazil
Reviewed in the United States on October 12, 2020
Looks promising. I like 10 years warranty.I just installed..will see how works.
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