Description
ContiTech is the OEM supplier for Meritor trailer air suspension systems. The ContiTech AS8729 is a rolling lobe air spring designed for heavy-duty trailer air ride suspensions. It directly replaces Meritor 202796 and Firestone W01-358-8729, providing reliable load support, ride comfort, and stability under demanding on-highway and regional haul conditions.
Signs You Need a New Air Spring
- Trailer sagging or sitting unevenly when loaded
- Visible cracks, dry rot, or abrasion on the air spring bellows
- Audible air leaks near the suspension assembly
- Excessive trailer bounce or harsh ride quality over bumps
Specifications
| Manufacturer | ContiTech (Continental AG) |
|---|---|
| Part Number | AS8729 |
| Part Type | Air Spring – Rolling Lobe |
| Application | Trailer Air Ride Suspension (Meritor) |
| Extended Height | 14.00″ |
| Compressed Height | 4.70″ |
| Top Plate Width | 10.38″ |
| Piston Width | 10.16″ |
| Top Plate Hole Quantity | 2 |
| Top Plate Center to Center | 5.5″ |
| Weight | 13.00 lbs |
Cross References
This part replaces or is equivalent to the following part numbers:
- Firestone: W01-358-8729 (Bellows 1T17BB-2)
- Goodyear: 1R13-130
- Meritor: 202796, A2258F1410, FS8729
- ContiTech: 10 10B-13 S 513, 10 10.5AV-12 P 513, 75741
- Automann: AB1DK25D-8729
- HDValue: HDV8729
- World American: WA01-8729C
- Dayton Parts: 352-8729
- Euclid: E-FS8729
- Triangle Air Springs: 8513, AS-8513
- Navistar: FLTA1R13130
- Newstar: S-25909
- Batco: 10-98729
- Springride: 1R13261
Applications
This air spring fits Meritor trailer air ride suspension systems and is used on a wide range of heavy-duty dry van, flatbed, and refrigerated trailers equipped with Meritor air suspension.
- Trailers with Meritor air ride suspension using OEM part 202796
- Trailers originally equipped with Firestone W01-358-8729 or Goodyear 1R13-130 air springs
Air springs are not vehicle-specific — always verify the existing part number, mounting dimensions, and stud configuration before ordering to confirm fitment.
