# Service bulletin 05\-81\-20

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.

- Type: Service bulletin
- NHTSA id: 10183697
- Published by NHTSA: 2020\-12\-05
- Manufacturer's number: 05\-81\-20
- Manufacturer's date: 2020\-11\-10
- NHTSA component: SUSPENSION

## NHTSA's summary

This bulletin announces design changes made to certain rear shock absorbers used on the models listed.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10183697-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10183697-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Suspension

## Vehicles listed

- 2018 to 2019 SUBARU WRX
- 2018 to 2019 SUBARU WRX STI

## Other bulletins for the same vehicles and component

- [05\-84\-21R](/bulletins/11027076.md), 2026-01-06, Service bulletin: SUSPENSION. This bulletin announces availability of new front wheel hub assemblies incorporating bearing surfaces having increased resistance to imperfections resulting from shock loads.
- [03\-96\-25](/bulletins/11017444.md), 2025-05-01, Service bulletin: SUSPENSION; POWER TRAIN. 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\-24](/bulletins/11008259.md), 2024-10-02, Service bulletin: SUSPENSION. This bulletin outlines the judgment criteria to be used when inspecting front transverse link bushings to reduce unnecessary bushing replacement.
- [05\-91\-24](/bulletins/11005593.md), 2024-08-05, Service bulletin: SUSPENSION. This Bulletin provides guidance for diagnosing a leaking front or rear suspension strut.
- [5\-88\-21R](/bulletins/10225740.md), 2022-11-03, Service bulletin: SUSPENSION. This bulletin announces a design change made to the front stabilizer bushings.
- [05\-88\-21](/bulletins/10216969.md), 2022-08-02, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; SUSPENSION. This bulletin announces a design change made to the front stabilizer bushings.
- [05\-88\-21](/bulletins/10205927.md), 2022-01-04, Service bulletin: SUSPENSION. This bulletin announces a design change made to the front stabilizer bushings.

JSON: [/v1/bulletins/10183697](/v1/bulletins/10183697)

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