Kenworth service campaign KWE316
What it saysCampaign Certain PACCAR MX-13 engines contain bolts for the main bearing caps which may fail under certain conditions. NHTSA’s full summary ↓
Kenworth filed this with NHTSA as a service campaign dated May 21, 2024, received Jun 4, 2024, about the engine — 1 document under this number: E316. It names 5 model years (2020–2024). A service campaign 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 communicationCampaign Certain PACCAR MX-13 engines contain bolts for the main bearing caps which may fail under certain conditions.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| E316 | Service campaign | May 21, 2024 | 11000765 | PDF, 613 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: 2020 Kenworth T680; 2021 Kenworth T680; 2022 Kenworth T680; 2023 Kenworth T680; 2024 Kenworth T680.
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 group12 other manufacturer communications filed against the Kenworth T680 under the same component group (engine), newest first. The eight newest are listed; the rest are on the Kenworth 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… |
| 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." |
| 99-051 | Emissions | May 18, 2026 | There is an update to the CARB Base Emissions Warranty Limits table and Manufacturer’s Warranty Coverage section in certain Engine Model Yea… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Kenworth, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Kenworth KWE316 a recall?
No. A service campaign 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 KWE316 repair free?
A service campaign 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 KWE316 cover?
The manufacturer filed it against 5 model years: 2020 Kenworth T680, 2021 Kenworth T680, 2022 Kenworth T680, 2023 Kenworth T680, 2024 Kenworth T680. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.