Severity
Critical
CriticalActive
NHTSA recall · Reported September 16, 2021
PETERBILT 2020: SERVICE BRAKES, AIR
PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The quick release valve on the rear brake signal hose may be missing. As such, these vehicles…
Compiled from official public sources by the editorial team.
Verify with NHTSA →
Peterbilt recalled PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The … - a critical-severity action.
PETERBILT 2020: SERVICE BRAKES, AIR was recalled by Peterbilt in September 16, 2021. Reason: PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The quick release valve …. Remedy: Dealers will inspect the vehicles for a missing quick release valve, and install one if n…. Verify recall #21V720000 with the NHTSA before acting.
The recall
Peterbilt issued this critical-severity NHTSA recall-PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The quick release valve ….
- Critical
- severity level
- September 16, 2021
- reported
Sourced from official NHTSA enforcement records. Verify recall #21V720000 with the agency before acting. Full product description, hazard, remedy, and related recalls are below.
Recall Insight
This NHTSA action (record #21V720000) was formally reported on September 16, 2021. It is classified under Critical severity, with a current status of Active. Peterbilt is listed as the recalling firm. The number of affected units is not disclosed in the agency filing, which is common for drug and food recalls where lot-level tracking supersedes unit counts.
The documented reason for this recall is: PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The quick release valve on the rear brake signal hose may be missing. As such, these vehicles fail to comply with the requirements of… The specific hazard cited in the filing is: A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury.. Distribution data in the federal record shows the product reached: United States. Distribution scope directly affects the consumer exposure window and determines whether a recall remains regional or escalates into a nationwide advisory. The remedy documented by the agency is: Dealers will inspect the vehicles for a missing quick release valve, and install one if necessary, free of charge. Owner notification letters were mailed on October 7, 2021. Owners may contact PACC… - consumers holding this product should act on that instruction rather than relying on general guidance.
Within the same product category the archive holds 6 closely related recalls - clustering in a narrow category often points to a systemic quality-control or supplier issue rather than a one-off defect. Always verify the recall number against the official agency record before acting.
Vehicles recalls over time
Where this recall sits in its category - 7,642 vehicles recalls on record
Of 101,704 recalls in the database, 24,878 are high severity, 72,426 moderate, and 4,400 low. This recall is classified high severity.
Counts reflect market size and reporting activity, not inherent danger, we do not rank products by risk from raw recall volume.
Affected scope
Unknown
Related Recalls
6
0 from same agency
Product description
PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The quick release valve on the rear brake signal hose may be missing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Reason for recall
PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The quick release valve on the rear brake signal hose may be missing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Hazard
A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury.
Remedy, what to do
Dealers will inspect the vehicles for a missing quick release valve, and install one if necessary, free of charge. Owner notification letters were mailed on October 7, 2021. Owners may contact PACCAR's customer service at 1-940-591-4220 (Peterbilt). PACCAR's number for this recall is 21PBK.
Recall Profile
| Attribute | Value |
|---|---|
| Agency | National Highway Traffic Safety Administration |
| Severity class | Critical |
| Status | Active |
| Recall number | 21V720000 |
| Date reported | September 16, 2021 |
| Date initiated | September 16, 2021 |
| Recalling firm | Peterbilt |
| Affected scope | Not disclosed |
| Distribution | United States |
| Official source | NHTSA notice → |
Profile values are sourced directly from the official NHTSA enforcement record. Source: National Highway Traffic Safety Administration.
What to do with this recall
Dealers will inspect the vehicles for a missing quick release valve, and install one if necessary, free of charge. Owner notific…
- Check the recall number (21V720000) and product description against the item you own. Search the archive
- Confirm the current status and remedy on the official NHTSA notice before acting. NHTSA notice
- This is a Class I (high-risk) recall, stop using the product immediately and follow the disposal or return instructions. What to do next
This page summarizes the official NHTSA record for research and awareness; it is not legal, medical, or safety advice. Verify with the issuing agency before acting.
Frequently Asked Questions
What product was recalled? ▼
PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The quick release valve on the rear brake signal hose may be missing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems.". Recalled by Peterbilt.
Why was this product recalled? ▼
PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The quick release valve on the rear brake signal hose may be missing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
What should consumers do? ▼
Dealers will inspect the vehicles for a missing quick release valve, and install one if necessary, free of charge. Owner notification letters were mailed on October 7, 2021. Owners may contact PACCAR's customer service at 1-940-591-4220 (Peterbilt). PACCAR's number for this recall is 21PBK.
Which agency issued this recall? ▼
This recall was issued by the NHTSA on September 16, 2021. Severity: Critical. Recall number: 21V720000.
Where was the recalled product distributed? ▼
Distribution: United States.
How do I check if my product is affected by a recall? ▼
Check the product description and recall number (21V720000) against your product. Visit the official NHTSA website for the most current information. You can also use our Recall Checker tool to search by product name or brand.
How do I report an injury from a recalled product? ▼
Report injuries to the issuing agency: CPSC at SaferProducts.gov, NHTSA at nhtsa.gov/report-a-safety-problem, or FDA via MedWatch. Document the product (photos, model/serial numbers, purchase receipts) and seek medical attention. Injury reports help agencies track hazard patterns and may strengthen enforcement actions.
Nearby Recalls in This Category
Other recalls in the same product category, useful for spotting patterns across the same defect class or manufacturer.
CPSC Moderate
Yamazuki Recalls Youth All-Terrain Vehicles (ATVs) Due to Risk of Serious Injury or Death from Crash; Violate Mandatory…
Yongkang Ruihe Metal Products Co. Ltd., of China · 2026-06-25
CPSC Moderate
Joolz Recalls Aer2 Car Seat Adapters for Strollers Due to Risk of Serious Injury from Fall Hazard
· 2026-06-18
CPSC Moderate
Joolz Recalls Aer2 Car Seat Adapters for Strollers Due to Risk of Serious Injury or Death from Suffocation and Fall Haz…
CooCooBaby, of China · 2026-06-18
CPSC Moderate
Kawasaki Motors USA Recalls Model Year 2026 Teryx4 H2 and Teryx5 H2 Recreational Off-Road Vehicles Due to Impact and In…
Kawasaki Motors Manufacturing Corp., U.S.A., of Lincoln, Nebraska · 2026-06-11
CPSC Moderate
Yamaha Recalls Model Year 2021-2022 Fleet Golf Cars Due to Risk of Serious Injury or Death from a Crash Hazard
· 2026-06-11
Compare this recall with Yamazuki Recalls Youth All-Terrain Vehicles (ATVs) Due to R… →
Every figure on PlainRecalls is rendered directly from official FDA, CPSC and NHTSA recall records, no number is typed in by an editor. This recall: NHTSA, reported September 16, 2021. Severity classes follow each agency's own taxonomy (FDA Class I/II/III; CPSC and NHTSA by hazard type), and related-recall context is computed across the full archive. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of July 2026.