The Meritor A7-3376T20 or A73376T20 is a genuine Meritor Type 20 air brake chamber assembly with a 2.25 in. stroke. A brake chamber turns compressed air into mechanical push: air pressure moves a flexible diaphragm inside the housing, and the diaphragm drives the push rod out to apply the brake.
The diaphragm is the part to watch. A leak lets air escape and weakens braking at that wheel, and a fully ruptured diaphragm leaves that wheel brake with no braking effect. Chambers should be replaced in pairs so brake balance stays even. Meritor lists this chamber in steer axle assemblies FH946KX6, FH946KX9 and MFS14143ANK2.
Features
Type 20 air brake chamber assembly
Stroke: 2.25 in.
Genuine Meritor OEM part
Replace chambers in pairs to keep brake balance
Listed in Meritor steer axle assemblies FH946KX6, FH946KX9 and MFS14143ANK2
A leaking or torn diaphragm is the common failure, with air loss and weaker braking at that wheel
Tech Specs
- Chamber type: Type 20 air brake chamber
- Stroke: 2.25 in.
