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Brake Chamber 2.25" Standard Stroke 4.00" 90° - 179.SC20S

Brake Chamber 2.25" Standard Stroke 4.00" 90° - 179.SC20S

Part#: AAA971SC20S

Features and Benefits

Service-only brake chamber for type-20 drum brake positions without parking brake requirements
Actuator size 20 for precise service chamber selection on type-20 brake axle configurations
Standard stroke type provides push rod travel matched to standard type-20 drum brake geometry
Clampband position ensures correct diaphragm orientation in the type-20 service chamber housing
Air port position enables correct air line routing on standard type-20 service brake installations
Stud spacing ensures correct mounting hole alignment for secure type-20 chamber installation

Warranty

Up to 3 years warranty

Please contact customer service to know more details

SPECIFICATIONS
INTERCHANGE
DESCRIPTION

Actuator Type Size	20
Stroke Type	Standard
Available Stroke	2.25 in.
A - Length from mounting bracket to end of Spring Housing	4.00 in.
D - Dimension at Service Clampband	8.60 in.
E - Stud Spacing	4.75 in.
J - Pushrod Length from face of Service Housing	10.20 in.
K - Distance to Clevis Pin centerline from face of Service Housing	Distance to Clevis Pin centerline from face of Service Housing
T - Air Port position	90°
S1 - Service Clampband position	0°
Weight	7.50 lbs
Quantity	1

Interchange

01-102
05-120
1036200
14-516
1420001
150-120
150-200
179.SC20
179SC20
2000SC
288803
30017
5007119
802990
85103654
A2000
A2000S
ABP- N42A20SCND
E-20S
E-BC20S
E20S
EBC20S
FLTS20S20
K058715
M-20SC
MA36200
R870020
R870020S
S-9814
SC20
WA20SC

The Brake Chamber is a standard stroke Type 20 design, engineered for reliable actuation on Heavy Duty commercial vehicle axle applications. Featuring 2.25" of available travel, the unit delivers consistent clamping force and dependable performance across a wide range of operational configurations.