What is the Supplemental Restraint System (SRS),Air Bag and Air Bag Control Module and what precautions should be taken when working with it on Subaru Legacy?

All models are fitted with an Airbag which is scientifically termed as the Supplemental Restraint System (SRS), to cushion the impact and thus minimize severe injury to the driver and the front seat passenger especially in a head-on/frontal impact. This ensemble is composed of an air bag module set at the middle of the steering wheel as well as, on some models, an additional air bag on the instrument panel located above the glove box. Other models include side-impact air bags, side-tube air bags, and front seat belt electric pre-tensioners that minimize slackness of front seat belts in serious impacts. The airbag inflator module situated in the steering wheel comprises of a housing that contain the airbag as well as the inflator unit that has the capacity of inflating the bag within an instance of getting an electrical signal. Passenger side has a bigger air bag, positioned over the glove compartment, and has the texts trim cover similar to the instrument panel ones. Trended side impact airbags are located in the outer line of the front seat back while side curtain airbags are located along the headliner line which is above the door opening. It provides power to the airbag system during an accident together with the battery and monitors the system each time the vehicle is turned on , provided the airbag warning light is working fine. The following precautions must be observed when operating in proximity to the SRS components; engaging the LOCK position in the ignition, removing the battery's negative terminal, and waiting for the orange lamp to go off. Bioaerosol exposure can thus occur while dealing with an airbag module and it is important to ensure that the opening of the airbag should not be towards the body or when placing the airbag on any surface, the opening should not face down. Used and defective airbag modules should be taken to a dealer for proper rendering of the airbag and proper disposal. Measurements of the resistance of SRS components should never be made and people are warned against performing any operations concerning yellow connectors that are related to the air bag system. Also, one has to amend the air bag system when installing anything around the front grille or the bumper, and electrical welding must never be conducted without removing the battery cables.

Genuine Subaru Legacy Air Bag Control Module

SRS Airbag Module

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56 Air Bag Control Modules found

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Subaru Legacy Control Unit Air Bag
Part Number: 98221AN01A
$350.30 MSRP: $516.67
You Save: $166.37 (33%)
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Product Specifications
- Other Name: Cont Unit Ab
- Replaced by: 98221AN01E
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2020 Subaru Legacy | 2.4R F/R-O, 2.4R Limited, 2.4R Touring, 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Touring | 2.4L H4 DIT, 2.5L H4 DI
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Subaru Legacy Control Unit Air Bag
Part Number: 98221AN00A
$282.49 MSRP: $416.65
You Save: $134.16 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Cont Unit Ab
- Replaced by: 98221AN00E
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2020 Subaru Legacy | 2.4R Limited, 2.4R Touring, 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring | 2.4L H4 DIT, 2.5L H4 DI
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Subaru Legacy Control Unit Air Bag
Part Number: 98221AN13A
$355.74 MSRP: $524.68
You Save: $168.94 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: CONT UNIT AB
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2023 Subaru Legacy | 4 Cyl 2.4L, 4 Cyl 2.5L
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Subaru Legacy Control Unit Air Bag
Part Number: 98221AN01B
$350.30 MSRP: $516.67
You Save: $166.37 (33%)
ADD TO CART
Product Specifications
- Other Name: Cont Unit Ab
- Replaced by: 98221AN01E
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2020-2021 Subaru Legacy | 2.4R F/R-O, 2.4R Limited, 2.4R Touring, 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Touring | 2.4L H4 DIT, 2.5L H4 DI
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Subaru Legacy Air Bag Control Unit
Part Number: 98221AL26B
$363.83 MSRP: $536.62
You Save: $172.79 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit Air Bag
- Replaces: 98221AL26A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2018-2019 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Touring, 3.6R Limited, 3.6R Premium, 3.6R Touring | 2.5L H4, 3.6L H6
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Subaru Legacy Control Unit Air Bag
Part Number: 98221AN11B
$277.92 MSRP: $409.92
You Save: $132.00 (33%)
ADD TO CART
Product Specifications
- Other Name: CONT UNIT AB
- Replaces: 98221AN11A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2022 Subaru Legacy | 4 Cyl 2.4L, 4 Cyl 2.5L
View related parts
Subaru Legacy Control Unit Air Bag
Part Number: 98221AN00B
$282.49 MSRP: $416.65
You Save: $134.16 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Cont Unit Ab
- Replaced by: 98221AN00E
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2020-2021 Subaru Legacy | 2.4R Limited, 2.4R Touring, 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring | 2.4L H4 DIT, 2.5L H4 DI
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Subaru Legacy Control Unit Air Bag
Part Number: 98221AN24A
$259.29 MSRP: $379.08
You Save: $119.79 (32%)
ADD TO CART
Product Specifications
- Other Name: CONT UNIT AB
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2024-2025 Subaru Legacy | 4 Cyl 2.4L, 4 Cyl 2.5L
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Subaru Legacy Air Bag Control Unit
Part Number: 98221AJ15B
$217.60 MSRP: $318.13
You Save: $100.53 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit-Air Bag; Control Module
- Replaces: 98221AJ15A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2013-2014 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 3.6R, 3.6R Limited, 3.6R Premium | 2.5L H4 DOHC, 3.6L H6
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Subaru Legacy Air Bag Control Unit
Part Number: 98221AJ08A
$212.46 MSRP: $310.62
You Save: $98.16 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit-Air Bag; Control Module, Diagnostic Module
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2011-2012 Subaru Legacy | 2.5GT Limited, 2.5GT Premium, 2.5i, 2.5i Limited, 2.5i Premium, 3.6R, 3.6R Limited, 3.6R Premium | 2.5L H4 SOHC, 2.5L H4 Turbo, 3.6L H6
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Subaru Legacy Air Bag Control Unit
Part Number: 98221AJ06A
$209.42 MSRP: $306.17
You Save: $96.75 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit-Air Bag; Control Module, Diagnostic Module
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2010 Subaru Legacy | 2.5GT Limited, 2.5GT Premium, 2.5i, 2.5i Limited, 2.5i Premium, 3.6R, 3.6R Limited, 3.6R Premium | 2.5L H4 SOHC, 2.5L H4 Turbo, 3.6L H6
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Subaru Legacy Air Bag Control Unit
Part Number: 98221AG28A
$284.36 MSRP: $419.42
You Save: $135.06 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit-Air Bag; Control Module, Diagnostic Module
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2008-2009 Subaru Legacy | 2.5i, 2.5i Limited, 3.0R, 3.0R Limited, 3.0R LL-Bean, Base, GT Limited, XT Limited | 2.5L H4, 2.5L H4 Turbo, 3.0L H6
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Subaru Legacy Air Bag Control Unit
Part Number: 98221AJ09A
$338.55 MSRP: $499.33
You Save: $160.78 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit-Air Bag; Control Module, Diagnostic Module
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2011-2012 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 3.6R, 3.6R Limited, 3.6R Premium | 2.5L H4 SOHC, 3.6L H6
View related parts
Subaru Legacy Air Bag Control Unit
Part Number: 98221AJ15A
$217.60 MSRP: $318.13
You Save: $100.53 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit-Air Bag
- Replaced by: 98221AJ15B
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2013 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 3.6R, 3.6R Limited, 3.6R Premium | 2.5L H4 DOHC, 3.6L H6
View related parts
Subaru Legacy Air Bag Control Unit
Part Number: 98221AJ16B
$339.08 MSRP: $500.12
You Save: $161.04 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit-Air Bag; Control Module, Diagnostic Module
- Replaces: 98221AJ16A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2013-2014 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Touring, 3.6R, 3.6R Limited, 3.6R Premium, 3.6R Touring | 2.5L H4 DOHC, 3.6L H6
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Subaru Legacy A/B Control Unit
Part Number: 98221AC022
$227.75 MSRP: $332.97
You Save: $105.22 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit-Air Bag; Control Module, Diagnostic Module
- Replaces: 98221AC020, 98221AC021
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1996-1997 Subaru Legacy | Brighton, GT, L, LS, LS-I, Post | 2.2L H4, 2.2L H4 (New EVAPO), 2.5L H4
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Subaru Legacy Air Bag Control Unit
Part Number: 98221AJ24A
$249.35 MSRP: $364.55
You Save: $115.20 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit-Air Bag; Control Module, Diagnostic Module
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2012 Subaru Legacy | 2.5GT Limited, 2.5i, 2.5i Limited, 2.5i Premium, 3.6R, 3.6R Limited, 3.6R Premium | 2.5L H4 SOHC, 2.5L H4 Turbo, 3.6L H6
View related parts
Subaru Legacy Air Bag Control Unit
Part Number: 98221AG29A
$283.01 MSRP: $417.42
You Save: $134.41 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit-Air Bag; Control Module, Diagnostic Module
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2008-2009 Subaru Legacy | 2.5i, 2.5i Base, 2.5i Limited, 3.0R, 3.0R Limited, GT, GT Limited | 2.5L H4, 2.5L H4 Turbo, 3.0L H6
View related parts
Subaru Legacy Air Bag Control Unit
Part Number: 98221AL25A
$292.62 MSRP: $431.60
You Save: $138.98 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Cont Unit Ab
- Replaced by: 98221AL25B
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2018 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 3.6R, 3.6R Limited, 3.6R Premium | 2.5L H4, 3.6L H6
View related parts
Subaru Legacy Air Bag Control Unit
Part Number: 98221AJ16A
$339.08 MSRP: $500.12
You Save: $161.04 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Unit-Air Bag
- Replaced by: 98221AJ16B
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2013 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Touring, 3.6R, 3.6R Limited, 3.6R Premium, 3.6R Touring | 2.5L H4 DOHC, 3.6L H6

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1-20 of 56 Results

Subaru Legacy Air Bag Control Module

The Subaru Legacy Air Bag Control Module is the brain behind the supplemental restraint system. This device will make an instantaneous decision to inflate the airbags to save lives in case of a collision. The Air Bag Control Module is constantly working to monitor signals. When a sensor detects a crash, this Air Bag Control Module continuously samples the signals from accelerometers, seat sensors, and battery lines. The module always stores reserve power. This ensures that protection is still active if the main electrical feed gets cut off. The Air Bag Control Module sends an electric pulse to the inflators to ignite solid propellant when force readings exceed its programmed threshold. This gas inflates the nylon bags in a fraction of a second. The rapid inflation process prevents the passengers from impacting hard surfaces. The bulky Subaru controller, which was mainly applied for driver-side bags and inflators that originally depended on compressed gases, was applied in early Subaru Legacy editions. Modern cars, on the other hand, have a lighter solid-state Air Bag Control Module that operates multistage front and side units, records crash data, and runs a quick diagnostic check every time the key turns. A brief warning lamp verifies during the check that the circuit is healthy, telling Legacy drivers they are good to go.

Our website stands as the go-to online destination for OEM Subaru Legacy Air Bag Control Module. With complete lines of genuine Subaru Legacy Air Bag Control Module available at unbeatable market prices, we ensure top quality, reliability, and durability. Each part comes backed by the manufacturer's warranty, reinforcing your trust in our offerings.

Subaru Legacy Air Bag Control Module Parts Questions & Experts Answers

Control Unit(Ab C)
98221AG04A
Q:
What is the Supplemental Restraint System (SRS),Air Bag and Air Bag Control Module and what precautions should be taken when working with it on Subaru Legacy?
Posted by Marcos R.
A:
All models are fitted with an Airbag which is scientifically termed as the Supplemental Restraint System (SRS), to cushion the impact and thus minimize severe injury to the driver and the front seat passenger especially in a head-on/frontal impact. This ensemble is composed of an air bag module set at the middle of the steering wheel as well as, on some models, an additional air bag on the instrument panel located above the glove box. Other models include side-impact air bags, side-tube air bags, and front seat belt electric pre-tensioners that minimize slackness of front seat belts in serious impacts. The airbag inflator module situated in the steering wheel comprises of a housing that contain the airbag as well as the inflator unit that has the capacity of inflating the bag within an instance of getting an electrical signal. Passenger side has a bigger air bag, positioned over the glove compartment, and has the texts trim cover similar to the instrument panel ones. Trended side impact airbags are located in the outer line of the front seat back while side curtain airbags are located along the headliner line which is above the door opening. It provides power to the airbag system during an accident together with the battery and monitors the system each time the vehicle is turned on , provided the airbag warning light is working fine. The following precautions must be observed when operating in proximity to the SRS components; engaging the LOCK position in the ignition, removing the battery's negative terminal, and waiting for the orange lamp to go off. Bioaerosol exposure can thus occur while dealing with an airbag module and it is important to ensure that the opening of the airbag should not be towards the body or when placing the airbag on any surface, the opening should not face down. Used and defective airbag modules should be taken to a dealer for proper rendering of the airbag and proper disposal. Measurements of the resistance of SRS components should never be made and people are warned against performing any operations concerning yellow connectors that are related to the air bag system. Also, one has to amend the air bag system when installing anything around the front grille or the bumper, and electrical welding must never be conducted without removing the battery cables.
Answered by Subaru Parts Specialist Gary / Mar 20, 2026

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