Triple Bellow – Firestone



Firestone Triple Bellow Air Springs

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We stock more air springs that are not listed on our web pages. If you don’t find an air spring part number that matches your needs, please use our Contact Form to find out if a Firestone air bag is available for your truck. Also, please use our contact form to inquire about quantity purchases of air bags and air bags not listed in our catalog. We offer replacement Firestone suspension air bags and Hendrickson air springs. Please indicate any suspension air spring part number information on the inquiry form.


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Firestone Triple Bellow Air Springs

Firestone Flex Number Piston Top Plate Bottom Plate
wdt_ID Firestone Flex Number Piston Top Plate Bottom Plate Top Plate Dia Bot Plate Dia Collapsed Hght Comments
1 312C 4299 15.13 15.13 4.30
2 312C
3 312C 3472 5 4 13.79 13.79 5.00
4 313C 3122 5 4 11.31 11.31 4.80 3B14-359
5 313D 3122 2 4 11.31 11.31 6.40 3B14-367
6 313D 3389 2 4 11.31 11.31 4.60
7 313D 3130 4 5 11.31 11.31 4.80 3B14-356
8 313D 3130 5 4 11.31 11.31 4.00 3B14-350 3B14-354
9 313D 3122 5 4 11.31 11.31 4.00 3B14-360
10 320C 3474 5 4 19.00 19.00 5.00
11 321C 4311 25.13 25.13 4.30
12 323C 3476 5 4 16.50 16.50 5.00
13 333C 3197 2 2 11.31 11.31 4.80 3B14-370 3B14-382 3B14-452
14 333C 3122 2 4 11.31 11.31 4.80 3B14-364 3B14-457
15 333C 3122 2 4 11.31 11.31 4.80 3B14-365
16 333C 3149 2 4 11.31 11.31 6.40 3B14-459
17 333C 3130 2 4 11.31 11.31 4.00 3B14-464
18 333C 3167 2 4 11.31 11.31 4.20
19 333C 3130 2 4 11.31 11.31 4.00
20 333C 3384 2 4 11.31 11.31 4.00
21 333C 3316 5 4 11.20 11.20 4.75 3B14-444
22 333C 3130 5 4 11.31 11.31 4.00 3B14-450
23 333C 3130 5 4 11.31 11.31 4.80
24 333C 3122 5 4 11.31 11.31 4.00
25 333C 3316 5 4 11.31 11.31 4.75
26 333C 3130 5 4 11.31 11.31 4.80
27 352D 3303 2 4 10.38 10.38 4.55 3B12-322
28 352D 3303 2 4 9.00 9.00 4.55 3B12-323
29 352D 3303 2 4 10.38 10.38 4.55
30 352D 3303 3 4 10.38 10.38 4.55
31 354D 3183 2 2 9.00 9.00 4.55 3B12-415
32 354D 3183 2 2 9.00 9.00 4.55 3B12-416
33 38D 3183 2 2 9.00 9.00 4.55 3B12-303
34 38D 3183 2 2 9.00 9.00 4.55 3B12-310
35 38D 3183 2 2 9.00 9.00 4.55 3B12-315 3B12-319
36 38D 3183 2 2 9.00 9.00 4.55 3B12-324
37 38D 3183 2 2 9.00 9.00 5.10 3B12-328
38 38D 3183 2 2 9.00 9.00 4.55 3B12-329
39 38D 3183 2 2 9.00 9.00 4.55 3B12-335
40 38D 3183 2 2 9.00 9.00 4.55
41 38D 3183 2 2 9.00 9.00 4.55
42 38D 3183 2 2 9.00 9.00 4.55
43 38D 3183 3 2 9.00 9.00 4.20 3B12-301
44 38D 3212 3 2 9.00 9.00 4.00 3B12-304
45 38D 3183 3 2 9.00 9.00 4.50
46 38D 3183 3 2 9.00 9.00 5.10
47 38R (38D) 3183 2 2 9.00 9.00 4.55 3B12-300
48 38R (38D) 3292 2 4 9.00 9.00 4.55 3B12-312
49 39C 3122 4 5 11.31 11.31 4.80
50 39D 3122 4 5 11.31 11.31 4.80