{
  "owners": null,
  "title": "Paccar recall 21V720 (21PBK): 2020-2021 Peterbilt 520",
  "url": "https://carsmultiverse.com/recall/21v720/",
  "summary": "Recall 21V720 (Paccar): A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury.",
  "excerpt": "Peterbilt 520, model years 2020 to 2021. Filed by PACCAR Incorporated and reported to NHTSA on 16 September 2021. 15 vehicles potentially affected. What the notice says 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.\" Is your vehicle included? Check with your VIN at NHTSA , or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on. CarsMultiverse / Recalls Paccar's own number for this recall: 21PBK. That is the number on the owner letter and on the dealer paperwork. 21V720 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways. Answered from the register this site holds. NHTSA is the record to act on. What the authority says can happen if this is not fixed: “A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury.” 21V720 PACCAR Incorporated Service Brakes, Air 16 September 2021 2020-2021 PETERBILT 520 A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury. Dealers will inspect the vehicles for a missing quick ",
  "register": {
    "authority": "NHTSA",
    "country": "United States",
    "index": "https://carsmultiverse.com/changed/"
  },
  "datePublished": "2026-08-23T22:02:57+00:00",
  "dateModified": "2026-09-16T19:58:23+00:00",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "citation": "CarsMultiverse, \"Paccar recall 21V720 (21PBK): 2020-2021 Peterbilt 520\", https://carsmultiverse.com/recall/21v720/, licensed CC BY 4.0.",
  "note": "CarsMultiverse is an independent record, not a safety authority. To act on a recall, use the official register."
}