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Service bulletin 05-87-21

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10201031
Published by NHTSA2021-09-03
Manufacturer's number05-87-21
Manufacturer's date2021-08-06
NHTSA componentSUSPENSION

NHTSA's summary

This bulletin announces a design change made to the front stabilizer bar bushing clamps.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Suspension

Vehicles listed
SUBARU ASCENT2021
SUBARU IMPREZA2021
SUBARU LEGACY2021, 2022
SUBARU OUTBACK2021, 2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
21V6750002021-08-30. SUSPENSION:FRONT:CONTROL ARM:LOWER ARM

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
05-96-262026-02-02. Service bulletin. This bulletin announces design changes to the front stabilizer link to address concerns about boot cracking, which can allow grease to escape.
05-97-252026-01-06. Service bulletin. This Bulletin announces a design change to the rear stabilizer bar bushing to address knocking sounds as a result of excessive clearance between the stabilizer bar and the bushing. The updated bushing features enhanced rubber material that is more elastic in cold climates.
05-95-252026-01-06. Service bulletin. This bulletin announces availability of new front wheel hub assemblies incorporating bearing surfaces having increased resistance to imperfections resulting from shock loads.
05-84-21R2026-01-06. Service bulletin. This bulletin announces availability of new front wheel hub assemblies incorporating bearing surfaces having increased resistance to imperfections resulting from shock loads.
03-96-252025-05-01. Service bulletin. This bulletin announces design changes made to the rear axle hubs. These changes have been implemented to reduce cases water intrusion further leading to harmonic, humming, and grinding type sounds heard from the axle hub while driving.
03-94-242024-10-02. Service bulletin. This bulletin outlines the judgment criteria to be used when inspecting front transverse link bushings to reduce unnecessary bushing replacement.
05-91-242024-08-05. Service bulletin. This Bulletin provides guidance for diagnosing a leaking front or rear suspension strut.
05-90-24R2024-04-02. Service bulletin. This bulletin announces changes in design to the front strut assemblies which will address cases of rumbling and/or rattling coming from the undercarriage while going over bumps.
05-90-242024-03-04. Service bulletin. This bulletin addresses rumbling and or rattling coming from the undercarriage while traveling over bumps. Subaru has made a design change to the front strut assemblies to address this issue.
05-62-18R2023-06-05. Service bulletin. This bulletin provides a procedure to address customer concerns of surface rust accumulating in the top center retaining nut area of the front strut mounts.