OEM Air Spring Manufacturers — Verified Global Directory
OEM air spring manufacturers supply pressurised rubber bellows as original equipment to truck, trailer and bus builders. This directory covers verified Tier-1 and Tier-2 producers behind the part numbers you will find in OEM catalogs.
●IATF 16949 certified
●PPAP-ready
●Platform launch capability
●Tier-1 references available
An OEM air spring producer is one whose products are fitted at the vehicle assembly plant under the vehicle maker warranty. The same bellows are often sold in the aftermarket under the manufacturer own brand, making OEM cross-reference data commercially important.
## Tier-1 Global OEM Suppliers
- **Continental ContiTech** — AS-8xxx, AS-9xxx series; OEM to Daimler Trucks, MAN, Scania, VDL
- **Firestone Industrial Products** — W01-, W21- series; OEM to Peterbilt, Kenworth, Freightliner, International
- **Vibracoustic (Freudenberg)** — cab and engine mounts; OEM to Mercedes-Benz, DAF, Iveco
- **Goodyear Engineered Products** — 1B, 2B, 3B series; OEM to North American trailer manufacturers
- **Neway Axle** — integrated axle/spring systems; OEM to Utility, Great Dane, Wabash
- **Phoenix/Woco** — rail and industrial plus truck cab; OEM to Alstom, Siemens rail division
## Tier-2 and Aftermarket OEM-Equivalent Producers
Tier-2 manufacturers produce parts dimensionally identical to Tier-1 OEM specs and supply replacement markets:
- STEMCO / Hendrickson (USA)
- SAF-Holland air spring components
- Blacktech, Gart (Europe)
- Turkish IATF 16949-certified exporters (60+ countries served)
## Reading OEM Part Numbers
Most OEM part numbers encode the manufacturer, series and application:
- Firestone: W01-358-XXXX (W01 = rolling lobe, 358 = piston diameter encoding)
- ContiTech: AS-8755 (AS = air spring, 4-digit geometry code)
- Goodyear: 1B9-117 (series, piston diameter class, application reference)
Use the cross-reference lookup at /cross-reference to translate any OEM number to its aftermarket equivalents.
Frequently asked questions
- What does OEM mean for air springs?
- OEM means the air spring was designed and fitted at the original vehicle assembly plant. OEM air springs carry the vehicle manufacturer part number and are the reference point for aftermarket cross-reference equivalents.
- Is OEM always better than aftermarket for air springs?
- Not necessarily. Many aftermarket air springs are made by the same Tier-1 factories that supply OEMs, sold under a different brand. The key is to match the OEM part specification rather than the brand name.
- How do I find the OEM part number for my air spring?
- Check the vehicle workshop manual, the original spring bead plate stamp, or the suspension manufacturer catalogue. Once you have the OEM number, use the cross-reference lookup on this site to find aftermarket equivalents.
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