Description
Goodyear 1R12-1204 rolling lobe air spring for Peterbilt cab/drive-axle suspensions. Direct replacement for Peterbilt C81-6000 / C81-1003 / C81-1012, Firestone W01-358-8813, and ContiTech AS8813. 18.9 in extended height with a 5,710 lb load rating at 80 PSI on Class 8 highway tractors.
Signs You Need a New Air Spring
- Truck leaning to one side or sagging at the affected corner
- Cracks, dry rot, or chafing on the rubber bellows
- Audible air leak from the suspension
- Harsh, bouncy, or noisy ride over bumps
- Air compressor cycling more often than usual
Specifications
| Manufacturer | Goodyear |
|---|---|
| Part Number | 1R12-1204 |
| Part Type | Rolling Lobe Air Spring |
| Maximum Height | 18.9 in |
| Design Height | 11.5 in |
| Minimum Height | 7.1 in |
| Maximum Diameter | 12.6 in |
| Top Plate | 9.0 in dia, 2 holes (6.2 in c-c) |
| Bottom Plate | 9.53 in dia, single stud (Type A, 2.25 in c-c) |
| Load Rating @ 80 PSI | 5,710 lb |
| Load Rating @ 100 PSI | 7,160 lb |
| Natural Frequency | 71 cpm |
Cross References
This part replaces or is equivalent to the following part numbers:
- Peterbilt: C81-6000
- Paccar: C81-1003, C81-1012
- Firestone: W01-358-8813, 8812, 8813, 8814
- ContiTech: AS8813, 65990, 9 10-14 P 577 (91014P577)
- Meritor: FS8813
- Euclid: E-FS8813
- HD Value: HDV8813
- Automann: AB1DK23I-8813
- Airglide: 380
Applications
This air spring fits Peterbilt suspensions originally equipped with C81-6000 / C81-1003 / C81-1012 air springs, including:
- Peterbilt 357 / 378 / 379 (1987–2007) — cab and drive-axle positions
- Peterbilt 365 / 367 / 388 / 389 (2008–present) — vocational and on-highway
- Peterbilt 567 / 579 (2013–present) — drive-axle
Verify your suspension type and mounting hardware (single stud bottom, two threaded holes top) before ordering.
