Air Spring - 21CT RB 4ST1/4NPT 4ST
Specifications
| Air Spring Type | Double Convoluted |
| Application | R & S Truck & Body 1090214, Ridewell 1003587140C, Watson & Chalin AS-0008, Temisko |
| Bellows | 21 |
| Bottom Mount | Stud |
| Bottom Plate Diameter | 11-5/16 in (28.73 cm) |
| Bottom Stud Configuration | 4 |
| Compressed Length | 3-51/64 in (9.65 cm) |
| Design Height (in.) | 8 in @ 9-1/2 in (20.32 cm @ 24.13 cm) |
| Diameter | 14-1/2 in (36.83 cm) |
| Loading Capacity at 20 psig | 1912 lb-ft |
| Loading Capacity at 60 psig | 5736 lb-ft |
| Loading Capacity at 90 psig | 8604 lb-ft |
| Minimum Jounce Height (in.) | 3-51/64 in (9.65 cm) |
| Temperature | 57°C @ -54°C (134.6°F @ -65.2°F) |
| Top Mount | Stud |
| Top Plate Diameter | 11-5/16 in (28.73 cm) |
| Top Stud Configuration | 5 |
| Weight | 20.6 lb (9.34 kg) |
Interchanges & Equivalent parts:
1015, 2B14-359, 2B14359, 354-7140, 7782, AB7140, AB7782, AS-4316, FIR7140, GR-1015, GR1015, S3184, U791015, 1003587140C, 4316, AS0008, 1090214, 3917972, 5396-W013587140, AS7140, B3184, FD 530-22 316, FIRW01-358-7140, FS7140, FSIW013587140, G2297140500, HDX W013587140, MIDW013587140, TR7140, TWDW013587140, W013587140, 7142, 554799C1, 57007140, 64544, 90557257, AS-0008, FD 530 22 316, SC2015, W01-358-7140, GR-1015, 7782, 354-7140, GR1015, 2B14-359, 1015, FIR7140, AB7140, S3184, 2B14359, AS-4316, U791015, AB7782, AS7140, 1003587140C, 4316, HDX W013587140, TWDW013587140, B3184, FS7140, G2297140500, MIDW013587140, 1090214, FD 530-22 316, 3917972, AS0008, TR7140, FSIW013587140, W013587140, FIRW01-358-7140, 5396-W013587140, 7142, AS-0008, FD 530 22 316, 57007140, 64544, SC2015, 90557257, 554799C1, W01-358-7140, M6706
