Rear Sub Frame Bolts- Design Change – 2006-2021 Subaru

NHTSA ID Number: 10188220

Manufacturer Communication Number: 05-83-21

Summary

This bulletin announces design changes made to the rear sub frame retaining bolts

 


NUMBER: 05-83-21
DATE: 02/22/21

APPLICABILITY: 2010-21MY Legacy
2008-21MY Impreza
2008-20MY WRX
2008-20MY WRX STI
2013-20MY BRZ
2019-21MY Ascent
2006-14MY Tribeca
SUBJECT: Rear Sub Frame Bolts- Design Change

 

INTRODUCTION:

This Service Information Bulletin announces design changes made to the rear sub frame retaining bolts.  water drainage grooves have been added and the bolt head flange thickness has been increased for purposes of part unification with other models.  These 4 (four) main bolts secure the rear sub frame into the vehicle.

 

PRODUCTION CHANGE INFORMATION:

The new bolts were incorporated into production as per the table below.  Additional starting VIN information will be added as it becomes available.

Model Starting VIN
Legacy M3009195
Impreza 4-Door M3603443
Impreza 5-Door M3707702
WRX / STI L9823684
Ascent M3429891

 

PART INFORMATION:

  • For SBR / Japan-produced vehicles, the new sub frame bolt’s part number is: 20058FL020.
  • For SIA -U.S. produced vehicles, the new sub frame bolt’s part number is: 20058AL00B.

 

IMPORTANT:  These sub frame bolts are one-time use  items as indicated by the black star in the Service Manual and the illustration above.  Anytime these bolts are removed, they must be replaced.

 

REMINDER: Always order the most up-to-date replacement parts based on the specific VIN being repaired.  The changes made to the sub frame bolts are outlined in the illustrations below.

 

Torque Specifications:

  • All models EXCEPT Tribeca: 145 Nm (107 ft. lbs.)

 

IMPORTANT NOTES:

  • On models where the vehicle’s suspension height is measured using the top of the bolt head of the rear sub frame bolts, these new bolts will REDUCE that specification by 2mm due to the added flange thickness. An example image of the related Service Manual information (Impreza) is provided below.
  • These new bolts may only be used as substitutes for bolt p.n. 901000378 for rear suspension mounting. There are other places on the vehicle where p.n. 901000378 is used but, these new bolts are NOT to be substituted for use in those areas.

 

SERVICE PROCEDURE / INFORMATION:

REMINDER:  Customer satisfaction and retention starts with performing quality repairs.

The service procedures for sub frame bolt replacement remain unchanged.  Always refer to STIS and review the full requirements of the repair being performed.  The Service Manual procedures contain information critical to performing an effective repair the first time, every time.  This includes but is not limited to important SAFETY precautions, proper inspection criteria, necessary special tools, required processes and related one-time-use parts needed for a complete and lasting repair.

 

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.

 


1 Affected Product

Vehicle

MAKE MODEL YEAR
SUBARU SUBARU 9999

 


1 Associated Document

Manufacturer Communications

NUMBER: 05-83-21
DATE: 02/22/21

https://www.nhtsa.gov/recalls?nhtsaId=10188220

MC-10188220-0001.pdf 1176.774KB

MC-10188220-0001

 


NHTSA ID Number: 10188218

Manufacturer Communication Number: 02-157-14R

Summary

As part of our dedication to customer satisfaction, Subaru of America, Inc. is initiating a program to extend the original New Car Powertrain Limited Warranty coverage for excessive engine oil consumption on applicable vehicles to 8 years / 100,000 miles from the original warranty start date.

 

1 Associated Document

Manufacturer Communications

NUMBER: 05-83-21
DATE: 02/22/21

https://www.nhtsa.gov/recalls?nhtsaId=10188218

MC-10188218-0001.pdf 1176.774KB

MC-10188218-0001

 


 

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Last update on 2023-05-11 / Affiliate links / Images from Amazon Product Advertising API

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