# NHTSA recall 21V328000

A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.

- Published by: NHTSA \(United States\)
- Campaign number: 21V328000
- Manufacturer's number: 21PBE
- Manufacturer: PACCAR Incorporated
- Reported: 2021\-05\-10
- Owners notified: 2021\-07\-09
- Component: SERVICE BRAKES, AIR:DISC:CHAMBER; SERVICE BRAKES, AIR
- Units potentially affected: 13
- Part numbers: C75\-6011\-32024L201 and C75\-6011\-32024R201

## What is wrong

PACCAR Incorporated \(PACCAR\) is recalling certain 2021 Peterbilt 348 and 579 vehicles.  The spring brake chamber may have been assembled with incorrect springs that were out of specification, which may cause the pressure plate to shift.


## What can happen

The pressure plate may tear the diaphragm, causing a loss of air pressure and increasing the risk of a crash.


## The remedy

Dealers will replace brake chambers, free of charge.  Owner notification letters were mailed on July 9, 2021.  Owners may contact PACCAR \(Peterbilt\) customer service at 1\-940\-591\-4220.  PACCAR's number for this recall is 21PBE.


## Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1\-888\-327\-4236 \(TTY 1\-800\-424\-9153\), or go to www.safercar.gov.


## Remedy progress the manufacturer reported

- Report: Annual report 3, for 2025 quarter 3 to 2026 quarter 2
- Filed with NHTSA: 2026\-07\-28
- Vehicles in the campaign: 13
- Reported remedied: 12 \(92%\)
- Reported unreachable: 0
- Reported removed: 0

These are the manufacturer's totals for the whole campaign at the end of 2026 quarter 2, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026\-10\-19.

## Vehicles this campaign lists

- [2021 PETERBILT 348](/makes/peterbilt/348/2021/recalls.md)
- [2021 PETERBILT 579](/makes/peterbilt/579/2021/recalls.md)

## Bulletins for the same vehicles and component

A bulletin is the manufacturer's note to its dealers. It is not part of this recall.

- [34\-096](/bulletins/10235704.md), 2023-05-05, Service bulletin
- [13\-060](/bulletins/10219235.md), 2022-09-06, Service bulletin
- [13\-057](/bulletins/10209699.md), 2022-04-05, Service bulletin
- [21PBM](/bulletins/10206090.md), 2022-01-06, Service bulletin
- [13\-055](/bulletins/10182219.md), 2020-11-05, Service bulletin

## Check a VIN

- [NHTSA recall lookup by VIN, United States](https://www.nhtsa.gov/recalls)
- [Transport Canada recall search, Canada](https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng)

JSON: [/v1/recalls/nhtsa/21V328000](/v1/recalls/nhtsa/21V328000)

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