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Reversible Sleeve Air Springs
Part#: W01-358-9213
List Price $205.00
Your Price $121.48
You Save $83.52 - 41%
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Genuine Firestone replacement air spring W01-358-9213. Firestone air bag 9213 is designed to provide years and thousands of miles of trouble free service.
  • Technical Specs: Firestone W01-358-9213 Data Sheet.
  • Availability:Ships in 3 to 4 days
  • Firestone Part Number:W01-358-9213
  • Firestone Bellows Number:1T15M-6
  • Goodyear Part Number:1R12-090
  • Goodyear Bellows Number:566-24-3-038
  • Triangle Part Number:8407 / 8441
  • Triangle Bellows Number:6363
  • Navistar Number:1660581C-1 / 501559C-1 / 501559C-2
  • Note:Service Assembly

Part#: W01-358-9214
List Price $463.10
Your Price $274.43
You Save $188.67 - 41%
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Genuine Firestone replacement air spring W01-358-9214. Firestone air bag 9214 is designed to provide years and thousands of miles of trouble free service.

Part#: W01-358-9215
List Price $340.31
Your Price $201.67
You Save $138.64 - 41%
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Genuine Firestone replacement air spring W01-358-9215. Firestone air bag 9215 is designed to provide years and thousands of miles of trouble free service.
  • Technical Specs: Firestone W01-358-9215 Data Sheet.
  • Availability:Ships in 3 to 4 days
  • Firestone Part Number:W01-358-9215
  • Firestone Bellows Number:1T19F-5
  • Goodyear Part Number:1R14-037
  • Goodyear Bellows Number:566-28-3-015
  • Triangle Part Number:8414
  • Triangle Bellows Number:6367
  • Hendrickson Trailer NumberS-3648

Part#: W01-358-9216
List Price $391.86
Your Price $232.21
You Save $159.65 - 41%
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Genuine Firestone replacement air spring W01-358-9216. Firestone air bag 9216 is designed to provide years and thousands of miles of trouble free service.
  • Technical Specs: Firestone W01-358-9216 Data Sheet.
  • Availability:Ships in 3 to 4 days
  • Firestone Part Number:W01-358-9216
  • Firestone Bellows Number:1T19F-5
  • Triangle Part Number:8421
  • Triangle Bellows Number:6367
  • Note:CITY WELDING

Part#: W01-358-9218
List Price $364.50
Your Price $216.00
You Save $148.50 - 41%
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Genuine Firestone replacement air spring W01-358-9218. Firestone air bag 9218 is designed to provide years and thousands of miles of trouble free service.
  • Technical Specs: Firestone W01-358-9218 Data Sheet.
  • Availability:Ships in 3 to 4 days
  • Firestone Part Number:W01-358-9218
  • Firestone Bellows Number:1T19F-5
  • Goodyear Part Number:1R13-120
  • Goodyear Bellows Number:566-26-3-054
  • Triangle Part Number:8378
  • Triangle Bellows Number:6367
  • Holland (Neway) Number:905-57-209
  • Ridewell Number:1003589218C
  • Watson & Chalin #:AS-0073
  • Note:Suspensions Inc. # 201222

Part#: W01-358-9219
List Price $206.96
Your Price $122.64
You Save $84.32 - 41%
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Genuine Firestone replacement air spring W01-358-9219. Firestone air bag 9219 is designed to provide years and thousands of miles of trouble free service.
  • Technical Specs: Firestone W01-358-9219 Data Sheet.
  • Availability:Ships in 3 to 4 days
  • Firestone Part Number:W01-358-9219
  • Firestone Bellows Number:1T15M-6
  • Goodyear Part Number:1R12-182
  • Goodyear Bellows Number:566-24-3-038
  • Triangle Part Number:8408
  • Triangle Bellows Number:6363
  • Volvo Number35003-3201 / 35003-3203 / 35003-3204 / 35003-3209

Part#: W01-358-9221
List Price $266.30
Your Price $157.81
You Save $108.49 - 41%
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Genuine Firestone replacement air spring W01-358-9221. Firestone air bag 9221 is designed to provide years and thousands of miles of trouble free service.
  • Technical Specs: Firestone W01-358-9221 Data Sheet.
  • Availability:Ships in 3 to 4 days
  • Replaces:Load Air # P60733
  • Firestone Part Number:W01-358-9221
  • Firestone Bellows Number:1T19F-7
  • Triangle Part Number:8388
  • Triangle Bellows Number:6365

Part#: W01-358-9223
List Price $261.51
Your Price $154.97
You Save $106.54 - 41%
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Genuine Firestone replacement air spring W01-358-9223. Firestone air bag 9223 is designed to provide years and thousands of miles of trouble free service.
  • Technical Specs: Firestone W01-358-9223 Data Sheet.
  • Availability:Ships in 3 to 4 days
  • Firestone Part Number:W01-358-9223
  • Firestone Bellows Number:1T15M-6
  • Goodyear Part Number:1R12-188 / 1R12-903
  • Goodyear Bellows Number:566-24-3-038
  • Triangle Part Number:8409
  • Triangle Bellows Number:6363
  • Reyco Number:12884-01 / 12884-01A
Reversible Sleeve Air Springs
An uncompressed Air Bag

The reversible sleeve air spring has a piston which is an additional component that the convoluted air spring does not have. The piston is the component that is fastened to the moving trailing arm or axle mount and, as a result, plunges in and out of the air cavity within the rubber bellows.

A compressed Air Bag

In general, a piston gives the reversible sleeve air spring an advantage over the convoluted air spring in that spring, rates can be further tuned using a variety of piston profiles. For straight-sided pistons, the reversible sleeve air spring has an advantage over the convoluted air spring, in that a constant load for a given internal pressure may be maintained over a range of heights.


A cross section of a firestone reversible sleeve air bag
  1. Stud

    A permanent part of the bead plate assembly used to attach the airspring to the suspension.

  2. Combo Stud

    Combination mounting stud and air fitting.

  3. Bead Plate

    Permanently crimped onto the bellows at the factory allowing complete part leak testing prior to shipment.

  4. Bellows

    The heart of an Airide spring. Includes at least four plies, or layers, of material–an inner layer, two plies of cord-reinforced fabric, and an outer layer.

  5. Bumper (Optional)

    A solid molded rubber fail-safe device used on many suspension applications. Prevents excessive damage to vehicle and suspension in the case of sudden air pressure loss.

  6. Piston

    The lower section of the 1T and 1X style of airspring made from aluminum, steel or fiber reinforced plastic. Provides lower mounting arrangement for the airspring in the form of tapped holes or studs.

  7. Piston Bolt

    Attaches the piston to the bellows assembly. Extended, in some cases, to serve as a means of attaching the spring to the suspension.