and not penetrate effectively.

STEP 12: CAREFULLY loosen both nuts.

NOTE: When encountering cases of the nut becoming tight while loosening, slightly turn the nut in the
clockwise direction, re-apply WD-40 lubricant, and loosen the nut. PATIENCE IS KEY!

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Bulletin Number: WRA-26; Date: 03/16/26

Page 9 of 22

CAUTION: When encountering cases of the stud becoming excessively damaged during removal,
replacement of the affected stud will be required. Refer to the service procedure outlined in the
APPENDIX B section of this bulletin and then proceed to Step 14.

STEP 13: Remove the rear flange mounting bolts and
nuts and separate the exhaust.
NOTE: If needed, WD-40 and the wire brush can be used
to aid in removal.

STEP 14: Remove the mounting bolt holding the center
pipe to the hanging bracket.
NOTE: If needed, WD-40 and the wire brush can be used
to aid in removal.

STEP 15: Remove the center exhaust pipe from the
vehicle.
IMPORTANT: If excessive stud damage has occurred,
refer to the APPENDIX B section of this bulletin.
Once the additional service procedure is completed,
continue to Step 15 below.
STEP 16: Clean and degrease the mounting studs.
STEP 17: Install the new exhaust gaskets supplied in the part kit.
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Page 10 of 22

STEP 18: Install the new exhaust pipe. Secure the pipe to the hanger bracket with the mounting bolt
and torque to 35Nm (26ft-lbs).
STEP 19: Install the flange bolts, springs and new nuts. Torque to 18Nm (13ft-lbs).
STEP 20: Install the new mounting nuts to the front studs. Torque the nuts to 42Nm (31ft-lbs).
STEP 21: Remove the heat shield from the original center exhaust pipe.

STEP 22: Cut the catalytic converter into a 11 inch
section. Refer to the image below.

STEP 23: Prepare the catalytic converter for shipment
using the 16in x 8in x 8in cardboard box provided with
the replacement center exhaust pipe.
IMPORTANT: ONLY the box provided in the
service kit PN is to be used for return shipping to
the PCC. If the included return box is not available,
a suitable replacement box not to exceed 18 in x10
in x10 in may be used. The retailer’s AR statement
will be charged shipping costs for all other returned
packaging types exceeding the dimensions listed
above. A $100 dollar processing fee will also be billed to the retailer’s AR statement for WRA26 shipments exceeding these dimensions beginning March 16th, 2026. See TSB 09-51-08R for
general converter return procedures.
STEP 24: Ship the catalytic converter section to the
Parts Collection Center (PCC): 3701 David Howarth
Drive Lafayette IN 47909 using only the specifically
designated catalytic converter shipping account in the
returns shipping portal. As is standard practice, a RO
copy and a copy of the return request must accompany
the part to avoid a potential debit of the claim.

STEP 25: The heat shield and flanged ends can be discarded.
CALIFORNIA “VEHICLE EMISSION RECALL - PROOF OF CORRECTION”
CERTIFICATE
The California Air Resources Board and the Department of Motor Vehicles Registration/Recall
Program requires that all emission related Recall/Campaign or Service Program repairs be completed
before a vehicle registration is renewed. Please provide owners of vehicles registered in the state of
California a completed “Vehicle Emission Recall - Proof of Correction” certificate. Vehicle owners

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should be advised to retain this certificate because the California Department of Motor Vehicles may
require they provide proof this service program repair has been completed. Additional certificates
are available through normal parts ordering channels using part number MSA6P1301. Quantity 1 = 1
booklet of 50 certificates.

SERVICE PROGRAM IDENTIFICATION LABEL:
Type or print the necessary information on a Campaign Identification Label. The completed label
should be attached to the vehicle’s upper radiator support. Additional labels are available through
normal parts ordering channels. The part number is MSA6P1302, which comes as one sheet of 20
labels.
Part Number
MSA6P1302

Applicability

Description

Order Quantity

ALL MODELS

CAMPAIGN COMPLETION LABELS (CONTAINS ONE
SHEET OF 20 LABELS)

1

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CLAIM REIMBURSEMENT AND ENTRY PROCEDURES:
Credit to perform this recall will be based on properly completed repair order information. Retailers
may submit claims through Subarunet.com.
Labor Description
REAR CATALYST NON-COMPLIANCE - CVT
REAR CATALYST NON-COMPLIANCE – MT
(INCLUDES ECM REPROGRAMMING)

Labor Operation #
B106-301

Labor Time
0.7H

B106-302

1.0H

Fail Code
WRA-26

IMPORTANT REMINDERS:
•

SOA strongly discourages the printing and/or local storage of service information as previously
released information and electronic publications may be updated at any time.

•

Always check for any open recalls or campaigns anytime a vehicle is in for servicing.

•

Always refer to STIS for the latest service information before performing any repairs.

APPENDIX A
BATTERY CHARGING INFORMATION: Subaru of America, Inc. (SOA) highly recommends
utilizing either the Subaru Midtronics DCA-8000 Dynamic Diagnostic Charging System or the
Subaru Midtronics GR8-1100 Diagnostic Battery Charger to the vehicle in the Power Supply Mode
feature anytime a vehicle control module is being reprogrammed. Once the Midtronics charger is
connected to the vehicle, if the battery is fully charged, it will take less than three (3) minutes to bootup the charger, select the Power Supply Mode, and have the battery voltage stabilized and ready for
reprogramming.
NOTES:
•

For instructions on using the Power Supply Mode, reference the applicable User Manual for
the Midtronics DCA-8000 Dynamic Diagnostic Charging System and the Midtronics GR81100 Diagnostic Battery Charger on STIS.

•

Confirm all electrical loads such as lights, audio, HVAC, seat heaters, and rear defroster are all
switched OFF before setting up the charger for Power Supply Mode.

•

Select the correct battery type (Enhanced Flooded, Flooded, Gel, AGM or AGM Spiral).

•

Input the CCA which matches the vehicle’s battery. NOTE: OE and replacement batteries have
different CCA ratings. Always confirm the battery’s CCA rating before proceeding.

•

If using a DCA-8000 Dynamic Diagnostic Charging System, set the power supply voltage to
13.5 Volts.

•

DO NOT connect the DST-i or DST-010 until the Power Supply mode function has completed
its battery test mode and the Charging Voltage has dropped to and shows a steady 13.5 Volts on
the display.

•

Once Power Supply Mode reaches a steady 13.5 Volts, connect the DST-i or DST-010 to the
OBD connector and proceed with initiating the normal FlashWrite reprogramming process.

•

Amperage will fluctuate based upon the vehicle’s demand for power. NOTE: If the voltage
rises beyond 14 Volts while programming is in process, the procedure will abort. This can
indicate a need to test or charge the vehicle battery before any further attempt at programming
Continued...

Bulletin Number: WRA-26; Date: 03/16/26

Page 13 of 22

is made.
•

ALWAYS set the power supply voltage to 13.5 Volts when using Power Supply Mode. NEVER
turn the ignition switch on when charging at voltages 15 Volts or higher.

REMINDER: If the DCA-8000 or GR8-1100 indicates the vehicle’s battery must be charged, charge
the battery fully before proceeding to reprogram the vehicle while using the Power Supply Mode.
NOTE: Control module failures resulting from battery discharge during reprogramming are not a
matter for warranty. Should any DTCs reset after the reprogramming update is performed, diagnose
per the procedure outlined in the applicable Service Manual.
VERY IMPORTANT: This information is applicable to the Subaru Midtronics DCA-8000 Dynamic
Diagnostic Charging System and the Subaru Midtronics GR8-1100 Diagnostic Battery Charger
ONLY. It does not apply to any other brand / type of “generic” battery charger whatsoever. ONLY
the DCA-8000 and the GR8-1100 and their Power Supply Mode feature have been tested and
approved by SOA.

APPENDIX B
ADDITIONAL SERVICE PROCEDURES FOR STUD REMOVAL:
The following service procedures are to be applied when encountering difficulties removing the
exhaust hardware resulting in damage to the stud(s). The procedures were developed to provide assist
when removing seized hardware. Depending on the available equipment two different penetrate oil
application methods have been outlined.
Additional Required Tools & Materials
Tool Description

Image

Details

Option A)
A
Vacuum brake bleeder (Option

Required for pulling lubricant through
threads

Air hose nipple (Option A)

Required for pulling lubricant through
threads
Diameter: 9/16-7/8 inch

Rubber hose (Option A)

14mm deep socket (Option B)

Length: 3 inch
Required for pulling lubricant through
threadS
Required for appliying
lubricant using pressure

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Page 14 of 22

Cushion tape (Option B)

Required for appliying
lubricant using pressure

Heat gun

Required for flange heat
application

Pipe wrench or stud bolt remover

Required for turning stud

STEP 1: Prepare the coil attachment supplied in the MINI-DUCTOR VENOM tool by winding the
coil five rotations around a 27mm socket. This will provide the needed width for the heat application
to the exhaust components.

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STEP 2: Remove the center exhaust pipe (service procedure Steps 12-14 reference). This will allow
sufficient workspace.
STEP 3: Using a heat gun, apply heat to the flange area for 3 MINUTES. Once completed, apply heat
for 2 MINUTES using the MINI-DUCTOR VENOM.
CAUTION: DO NOT exceed heat application with the MINI-DUCTOR VENOM for more than 2
MINUTES.

STEP 4: CAREFULLY loosen the heated stud using a stud remover or pipe wrench. Once the stud
starts to turn, proceed to the next Step.
CAUTION: DO NOT fully remove the affected stud.
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IMPORTANT: When encountering cases of the stud being unable to loosen, slightly tighten the stud,
reapply heat, and re-attempt to loosen.

STEP 5: Using an air gun, apply air to the affected area for 1 MINUTE.

STEP 6: Depending on the available equipment, two methods have been provided for applying
lubricant to the affected area. Option A requires the use of a vacuum brake bleeder and option B uses
a socket and an air gun to apply the lubricant.
OPTION A:
1. Assemble the brake bleed hose tip, air hose nipple, and a hose cut with an outside diameter of
9/16-7/8 (15-21mm) and length of 3 inch (80mm).
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2. Apply vacuum to the affected stud. Maintain flush contact with the hose and flange to ensure
sufficient vacuum.
3. Spray the lubricant (WD-40) on the opposite side of the flange to the stud threads. Once the
lubricant has fully penetrated the threads, proceed to Step 7:

OPTION B:
Prepare the socket and tap by applying the tape to face of the socket. Ensure the tape is fully wrapped
to ensure a sufficient seal.

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Apply lubrication (WD-40) to the exposed threads on the connection side of the flange.
Install the pre-prepared socket over the stud. Insert the air gun in the back of the socket and close all
air gaps with a cloth or rag. While pressing the socket against the flange, Apply air to the socket. This
pressure will allow the lubricant to penetrate the threads.
Repeat the lubrication process until lubrication is detected on the opposite side of the flange. Once
sufficient lubrication has been confirmed, proceed to Step 7.

STEP 7: Using a stud remover or pipe wrench, CAREFULLY remove the affected stud.
CAUTION: If the stud becomes tight while removing, apply additional lubricant and continue
removal.
STEP 8: Install the new stud (p.n. 44154AA000). Proceed to Step 15 of the original service procedure.
IMPORTANT NOTE: If damage occurs to the front catalyst refer to part ordering/release information provided
on the next page.

PART RELEASE PROCESS:
In rare instances when the technician follows the repair procedure outlined in this bulletin and the
front pipe requires replacement, the retailer should submit an order for the kit part number below and
include the last eight characters of the VIN in the PO field. This kit includes a front converter, heat
shields, an exhaust gasket, and 4 self-locking nuts.
Part Number

Description

X4461AB070

PIPE AY GSKT KIT FR

This part is on hold and all orders will be reviewed prior to the part being released.
NOTE: Failure to order to part correctly and not include the last 8 characters of the VIN in the PO
field will directly result in your order being cancelled.
Once the appropriate part is received and the vehicle has been repaired, please submit a claim using
the labor operations in the Claim Reimbursement and Entry Procedures section of this bulletin.

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This notice applies to the VIN identified in
the adress section printed below.

Subaru of America, Inc
PO Box 9103
Camden, NJ 08101-9877
844-373-6614
www.subaru.com

Subaru Service Program WRA-26
Voluntary Emissions Recall
March 2026

Dear Subaru Owner:
We would like to thank you for your selection of a Subaru vehicle. We take pride in our products and
are committed to your continued satisfaction.
Subaru of America, Inc. (Subaru) is initiating a new voluntary emissions recall for certain 2018
model year WRX and Forester vehicles and certain 2019 model year WRX vehicles equipped with a
2.0L turbo engine. You have received this notice because our records indicate that you currently own
one of these vehicles.

REASON FOR THIS VOLUNTARY EMISSIONS RECALL
The performance of the rear catalyst may cause your vehicle to exceed exhaust emission standards.

REMEDY
Subaru will replace the rear catalyst with an improved one on all affected vehicles. Subaru will
also reprogram the Electronic Control Unit (ECU) on affected vehicles equipped with a manual
transmission. This repair will be performed at no cost to you.
HOW LONG WILL THE REPAIR TAKE?
The actual time to replace the rear catalyst is approximately 45 minutes. For vehicles equipped with a
manual transmission, an additional 20 minutes will be required to reprogram the ECU. Your retailer
can provide you with a better estimate of the overall time for this service visit, as it may be necessary
to make your vehicle available for a longer period of time for scheduling purposes.

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CALIFORNIA REGISTERED OWNERS
The California Air Resources Board requires that emission-related campaigns be completed prior to
California’s vehicle registration renewal process; without this repair, you will not be able to register
your vehicle during your next annual registration. Upon completion of this campaign, your California
dealer will complete and provide you a “Proof of Correction Certificate.”
If required, present the certificate to the California Department of Motor Vehicles (the “DMV”) when
renewing your California registration as proof of campaign completion. If the DMV does not request
the certificate, we recommend that you keep it for your records.

In addition, the State of California requires that every vehicle must pass an emission test (SMOG
Check) every two years and before it is sold. Without the service we are providing at no charge, your
vehicle may not pass this test. In order to ensure your full protection under the emission warranty
provisions, it is recommended that you have your vehicle serviced as soon as possible. Failure to do
so could be determined as lack of proper maintenance of your vehicle.

CHANGED YOUR ADDRESS OR SOLD YOUR SUBARU?
If you have moved or sold your vehicle, please go to https://www.subaru.com/support/customersupport.html to send us your information.

IF YOU NEED FURTHER ASSISTANCE:
To locate the nearest Subaru retailer, you can access our website at www.subaru.com and select ‘Find
a Retailer’.
For additional information, please go to: http://www.wra26.service-campaign.com.
If you need additional assistance, please contact us directly:
•

By e-mail: Go to www.subaru.com, Customer Support and select ‘Contact Us’

•

By telephone: 1-844-373-6614.
Monday through Friday between 8:00 a.m. and 7:00 p.m. ET

•

By U.S. Postal mail: Write us at Subaru of America, Inc.,
Attn: Customer Advocacy Department,
P.O. Box 9103, Camden, NJ 08101-9877

Please contact us immediately if the Subaru retailer fails or is unable to make the necessary repairs
free of charge.
Your continued satisfaction with your Subaru is important to us. Please understand that we have
taken this action in the interest of your vehicle’s proper operation. We sincerely apologize for any
inconvenience this matter may cause and urge you to schedule an appointment as soon as possible to
have this repair performed.

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Please contact us immediately if the Subaru retailer fails or is unable to make the necessary repairs
free of charge.

Your continued satisfaction with your Subaru is important to us. Please understand that we have
taken this action in the interest of your vehicle’s proper operation. We sincerely apologize for any
inconvenience this matter may cause and urge you to schedule an appointment as soon as possible to
have this repair performed.

Sincerely,
Subaru of America, Inc.

A subsidiary of SUBARU CORPORATION

Bulletin Number: WRA-26; Date: 03/16/26

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