Peterbilt warranty extension 7-700
What it says7/700 Service Agreement - Letter Only. NHTSA’s full summary ↓
Peterbilt filed this with NHTSA as a warranty extension dated Oct 22, 2024, received Nov 5, 2024, about the engine. It names 40 model years (2017–2021). A warranty extension is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communication7/700 Service Agreement - Letter Only.
One of the 432 warranty extensions and special-coverage programs on file — every make, with the term each runs to.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 7-700 | Warranty extension | Oct 22, 2024 | 11009757 | PDF, 139 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themAlso filed against: 2017 Peterbilt 320; 2018 Peterbilt 320; 2019 Peterbilt 320; 2020 Peterbilt 320; 2021 Peterbilt 320; 2017 Peterbilt 365; 2018 Peterbilt 365; 2019 Peterbilt 365; 2020 Peterbilt 365; 2021 Peterbilt 365; 2017 Peterbilt 367; 2018 Peterbilt 367; 2019 Peterbilt 367; 2020 Peterbilt 367; 2021 Peterbilt 367; 2017 Peterbilt 389; 2018 Peterbilt 389; 2019 Peterbilt 389; 2020 Peterbilt 389; 2021 Peterbilt 389; 2017 Peterbilt 520; 2018 Peterbilt 520; 2019 Peterbilt 520; 2020 Peterbilt 520; 2021 Peterbilt 520; 2017 Peterbilt 567; 2018 Peterbilt 567; 2019 Peterbilt 567; 2020 Peterbilt 567; 2021 Peterbilt 567; 2017 Peterbilt 579; 2018 Peterbilt 579; 2019 Peterbilt 579; 2020 Peterbilt 579; 2021 Peterbilt 579; 2017 Peterbilt 587; 2018 Peterbilt 587; 2019 Peterbilt 587; 2020 Peterbilt 587; 2021 Peterbilt 587.
None of these model years has a page on this site (it covers EPA-certified cars, trucks and SUVs from 2016), so the bulletin is listed here on its own.
More bulletins about the engine
Source: same model, same component group16 other manufacturer communications filed against these Peterbilt models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Peterbilt list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| E340 | Emissions | Oct 16, 2026 | KW Certain vehicle model year 2026 Kenworth chassis equipped with EMY2025 PACCAR MX engines require an amended engine label. The engine labe… |
| P001 | Service campaign | Sep 11, 2026 | "KW: The chassis list has been updated to include 1 chassis. The total chassis count is now 53. A link to the PACCAR Powertrain Prognostics… |
| P003 | Service campaign | Sep 3, 2026 | "KW: A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to incl… |
| P002 | Service campaign | Sep 3, 2026 | "KW: A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to incl… |
| E316 | Service campaign | Aug 1, 2026 | 235 chassis have been removed from the chassis list and unflagged in PRWS due to expiration of applicable warranty coverage. 5 chassis have… |
| E335 | Emissions | Jul 18, 2026 | Expiration Date Format Update - Certain EPA21 compliant PACCAR MX-13 engines were built with intake valve springs that could fail. This fail… |
| CE033 | Warranty extension | Jun 25, 2026 | "KW & PB 14 fuel injector part numbers (seven for MX-11 and seven for MX-13 engines) have been added to this warranty policy." |
| CE031 | Warranty extension | Jun 24, 2026 | "KW & PB 14 fuel injector part numbers (seven for MX-11 and seven for MX-13 engines) have been added to this warranty policy." |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Peterbilt, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Peterbilt 7-700 a recall?
No. A warranty extension is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls.
Is the 7-700 repair free?
A warranty extension is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does 7-700 cover?
The manufacturer filed it against 40 model years: 2017 Peterbilt 320, 2018 Peterbilt 320, 2019 Peterbilt 320, 2020 Peterbilt 320, 2021 Peterbilt 320, 2017 Peterbilt 365 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.