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Specifications

The Firestone AS9270 air spring (1T15VP4 CB 3/4CF Piston) is engineered to deliver dependable suspension performance in heavy‑load truck and trailer applications. Featuring a reversible sleeve design and durable rubber construction, it helps absorb road shock, maintain ride height, and improve overall driving comfort. Designed to match or exceed OEM specifications, this air spring is compatible with numerous part numbers and interchange references, making it a versatile replacement option. Ideal for fleet service or individual suspension rebuilds, it ensures long‑lasting ride stability and reliable performance.
Weight
15

Compatibility

Freightliner Cascadia (2008–Present)

Kenworth T600 / T800 / W900 (1995–Present)

Peterbilt 379 / 386 / 389 (1995–Present)

International ProStar / 9400 (1998–Present)

Mack CH / Pinnacle Series (1998–Present)

Volvo VN / VNL (2000–Present)

Western Star 4900 Series (1998–Present)

Various trailer suspension systems using 1T15VP4 CB 3/4CF air springs

Alternative Part Numbers

  • Dayton 354-9270
  • FleetPride AS9270
  • Goodyear 1R12-703
  • Hendrickson S-22707
  • Meritor 1TR9270
  • Triangle AS-9270

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