Air Brake Chamber Cross-Reference: Bendix, Haldex and Meritor to Aftermarket

The number on the old can is the key

Air brake chambers are a standardized foundation-brake part. A T30/30 from one maker does the same job as a T30/30 from the next — same type, same stroke, same mounting. So the number stamped on the unit you're replacing is all we need to hand you the right part, whatever badge was on it.

Bendix, Haldex, Meritor — they all cross

The big names you'll read off an old chamber — Bendix, Haldex (Gunite), Meritor, MGM — all build to the same DOT 121 spec. That's why a single aftermarket chamber can list a dozen interchange numbers: it isn't cutting corners, it's the same 30/30 that fits all of them.

Our chamber listings carry the interchange numbers right on the page, so you can match the number off your old part instead of guessing at a brand.

Aftermarket direct replacement, not a downgrade

"Aftermarket" scares some buyers off, and it shouldn't. A premium-quality direct-replacement chamber is built to the same type, stroke and mounting as the original, and it bolts to the same holes. What you skip is the dealer markup on a commodity part, not the performance.

What to check before you order

• Type and stroke: match the 30/30 and long-vs-short exactly — this is the one that bites people.
• Service vs spring brake: a single service chamber and a double-diaphragm spring brake are not the same part.
• Mounting and pushrod: same stud pattern and rod length so it drops in without modification.

Where PartStop fits

Read us the number off the old can, or send the VIN, and we'll cross it to a premium-quality aftermarket chamber — 6+ month warranty, shipped same-day from Tacoma. No dealer runaround on a part that stops the truck.

Frequently asked questions