What You're Actually Buying
This is a 30/30 chamber - 30 square inch service side, 30 square inch spring brake side - built short stroke, meaning the diaphragm travel is shorter than the old long-stroke units. Most trucks built from the mid-2000s on run short stroke because it cuts air usage and reacts faster.
On the FL112, you'll find these mounted at each wheel end on the spider bracket, service line running to one port, spring/parking brake line to the other. It's a standard 30/30 - not a 24/30 or a 20/24 - so don't swap sizes just because the bolt pattern looks close.
If your truck's already got short stroke chambers from the factory, this is a straight swap. If somebody converted an axle to long stroke chambers along the way, you need the long stroke part instead - check your push rod stroke length before you order.
Why All Those Numbers Cross
T3030, T2435, and the various MGM, Bendix, Automann, and Haldex part numbers in the table all reference the same physical chamber - same 30/30 sizing, same short stroke design, same standard 3-bolt or clamp-type mounting most FL112s use. Different manufacturers just stamp their own part number on what's functionally the same chamber built to the same industry spec.
Where you have to pay attention: mounting style (clamp-type vs bolt-on), the yoke and clevis pin size on the push rod end, and whether it's a standard rotochamber or a long stroke unit disguised with similar numbering. A 30/30 short stroke from Bendix and one from MGM will bolt up the same way, but grab the wrong clevis pin size and you're drilling out mounting holes at 5pm on a Friday.
Rule of thumb - pull the old chamber, read the tag on the side (it'll usually have the size and stroke stamped right on the housing), and match that against the numbers in our cross-reference table. If the tag's rusted through, give us your VIN and we'll pull it from there.
Ordering From Us
We're in Tacoma, and if you're a local fleet or owner-op needing this same day, call ahead and we'll have it at the counter. Ship nationwide too, usually next day for anything in the lower 48.
This T3030SHRT carries our standard 6+ month warranty - if it fails from a manufacturing defect, bring it back with your receipt.
One more thing: confirm fitment by VIN or by matching the number stamped on your old chamber before you order. Brake chambers are cheap compared to a wheel-end comeback because someone guessed on stroke length.
T3030SHRT Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to T3030SHRT. Use them to identify the part — then confirm the exact fit by VIN or the number stamped on your old unit before you order. An interchange is a starting point, not a fitment guarantee.
| Brand / Line | Cross-Reference Numbers |
|---|---|
| Cross-Reference | T3030, T2435, 5007132N, 800831, 801300, K129605 |
| Bendix | NT3030STD-KIT |
| Automann | 179.FGPB3030S |
| MGM Brakes | 3430008, 3430008X, 3430808 |
| Globetech | GTA-BC3030PK |
| Fleet Products | PB3030S250K |
| TSE | 3030S-PC-PREM |
| Haldex | GP3030K |
Frequently asked questions
Does T3030SHRT fit my Freightliner FL112?
Most FL112s from 2005-2018 ran a 30/30 short stroke chamber at this position, so odds are good. But confirm by VIN or by reading the tag on your old chamber - some trucks in that range got optioned with different axle configs that use different sizing.
Is this the same as the MGM 3430008?
Functionally yes - same 30/30 short stroke sizing, same general mounting. MGM just uses their own part numbering. Double check the mounting style (bolt vs clamp) and clevis pin size against what's currently on your truck before you order.
How do I know if I need short stroke or long stroke?
Check the stroke length stamped on your old chamber's housing tag, or measure actual push rod travel. Short stroke chambers became standard on most Class 8 trucks starting mid-2000s, but if someone's swapped axles or you're running an older spec, you could still have long stroke units out there.
Not sure it fits? We check before you pay.
Run your VIN and we’ll match parts to your exact truck, or call the counter — a person who knows trucks verifies fitment by OEM number before the order ships. No wrong-box returns.
More cross-reference guides
Need the part, not just the reading?
Every part below is a Premium Quality aftermarket Direct Replacement with published OEM cross-reference numbers, a 6+ month warranty and same-business-day shipping from Tacoma, WA. Not sure it fits? Run your VIN — or call and a person who knows trucks will verify fitment before you pay.