Air Spring - 2 Lobes - Convoluted - 21
#FIRW01-358-7145
Features & Benefits
- Manufactured to Meet or Exceed O.E.M. Specifications in Function, Form & Fit.
- Today, Airide Springs are Used by Practically All Manufacturers Who Offer Air Ride Suspensions on Their Vehicles.
- Airide Springs Were Pioneered & Perfected by Firestone, and Only Firestone Offers a Complete Line of Airide Springs.
Specifications
| Air Inlet | Air Inlet 1/4 in NPT |
| Air Spring Type | Double Convoluted |
| Application | Mack 57QL239, Ridewell 1003587145C, Volvo/GM-Heavy Duty Truck 35203-0005 |
| Bead Plate (Top) & Deflated Bellows O.D. | 11.31 in @ 14.5 in (28.73 cm @ 36.83 cm) |
| Bead Plate (Top) Mounting Bolts Dimension Center to Center | 6-1/4 in (15.88 cm) |
| Bellows | 21 |
| Bottom Bead Plate Hardware Key | 4 x Threaded Hole 3/8 in-16 Blind Nut on Bead Plates 1/2 in-13 Pistons |
| Bottom Plate Diameter | 11-5/16 in (28.73 cm) |
| Compressed Length | 3-1/8 in (7.95 cm) |
| Design Height (in.) | 8 in @ 9-1/2 in (20.32 cm @ 24.13 cm) |
| Diameter | 14-1/2 in (36.83 cm) |
| Firestone Bellows Number | 21 |
| Goodyear Bellow # | 578923353 |
| Loading Capacity at 20 psig | 1912 lb-ft |
| Loading Capacity at 60 psig | 5736 lb-ft |
| Loading Capacity at 90 psig | 8604 lb-ft |
| Piston (Bottom) Mounting Bolt Dimensions Center to Center | 6-1/4 in (15.88 cm) |
| Temperature | 57°C @ -54°C (134.6°F @ -65.2°F) |
| Top Bead Plate Hardware Key | 4 x Threaded Hole 3/8-16 in Blind Nut on Bead Plates 1/2-13 in Pistons |
| Top Plate Diameter | 11-5/16 in (28.73 cm) |
| Weight | 16.8 lb (7.62 kg) |
Interchanges & Equivalent parts:
2B14-354, 2B14354, 354-7145, 7145, AS-4374, FIR7145, 1003587145C, 3040-W013587145, 35203-0005, 4374, 570-07-145, 57QL239, AS7145, FD 530-22 374, FI W01 358 7145, FS7145, FSIW013587145, G2297145500, TR7145, TWDW013587145, W013587145, 13038, 352030005, 352033204, 554796C1, 566.CT64548, 57007145, FD530-22374, S-13038, S13038, S4540C, SC2016, W01-358-7145, 2B14354, AS-4374, FIR7145, 354-7145, 2B14-354, 7145, TR7145, AS7145, 35203-0005, 1003587145C, 570-07-145, FI W01 358 7145, 57QL239, FD 530-22 374, 3040-W013587145, FS7145, G2297145500, TWDW013587145, FSIW013587145, W013587145, 4374, SC2016, 554796C1, 352030005, FD530-22374, 566.CT64548, S4540C, S-13038, S13038, 13038, 352033204, 57007145, W01-358-7145
