How accurate are aftermarket cross-references?

Cross-references on Airspring are validated against published OEM dimensions: collapsed height, max diameter, max stroke, load rating, mounting interface and operating temperature. Always verify the application before fitment.

Will aftermarket equivalents void OEM warranty?

Aftermarket air springs that match or exceed OEM specifications generally do not affect commercial vehicle warranties beyond the OEM warranty period. Check with the vehicle manufacturer for specific clauses.

How accurate are aftermarket cross-references?

Cross-references on Airspring are validated against published OEM dimensions: collapsed height, max diameter, max stroke, load rating, mounting interface and operating temperature. Always verify the application before fitment.

Will aftermarket equivalents void OEM warranty?

Aftermarket air springs that match or exceed OEM specifications generally do not affect commercial vehicle warranties beyond the OEM warranty period. Check with the vehicle manufacturer for specific clauses.

W01 358 9121 — Cross-Reference & Suppliers

Verified aftermarket equivalents for W01 358 9121 (FIRESTONE 2), sourced from listed air spring manufacturers.

Specifications

Style: Custom
Application: Trailer/Semi-trailer Air Spring

Equivalent part numbers

Cross-references reported as interchangeable — confirm fit technically before ordering.

11 10.5-17 A 317 1T19F-7 1R13-039 AS621-9121 352-9121 PMABG9123B B3411 SC2040 554773C1 90557010 1090023 12882-02 S-3052-C P50-733 8317 85 101 159 AS-0083

Compatible products

Product	Supplier	Country
134942	Airtech Air Springs (Reference Dataset)	United States	Quote
ContiTech 11 10.5-17 A 317 (NAFTA)	Continental / ContiTech	Germany	Quote
ST 9121.CP	Smart Air Springs (Public Reference Dataset)	Turkey	Quote
ST 9121.CS	Smart Air Springs (Public Reference Dataset)	Turkey	Quote
Goodyear 11808	Goodyear Engineered Products (Reference)	—	Quote
Airtech 134942	Airtech Reference Catalog	—	Quote

Frequently asked questions

How accurate are aftermarket cross-references?: Cross-references on Airspring are validated against published OEM dimensions: collapsed height, max diameter, max stroke, load rating, mounting interface and operating temperature. Always verify the application before fitment.
Will aftermarket equivalents void OEM warranty?: Aftermarket air springs that match or exceed OEM specifications generally do not affect commercial vehicle warranties beyond the OEM warranty period. Check with the vehicle manufacturer for specific clauses.