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Service bulletin E343

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11037451
Published by NHTSA2026-09-23
Manufacturer's numberE343
Manufacturer's date2026-09-05
NHTSA componentENGINE

NHTSA's summary

An exhaust manifold slip joint seal kit is now available for EPA 2017-2024 PACCAR MX-13 engines.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
KENWORTH T6802017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026, 2027
KENWORTH T8802017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026, 2027
KENWORTH T880B2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
KENWORTH W9902018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026, 2027
PETERBILT 3892017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
PETERBILT 5672017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026, 2027
PETERBILT 5792017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026, 2027
PETERBILT 5892024, 2025, 2026, 2027

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20224702022-08-18. Engine
22V6310002022-08-17. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
21V0800002021-02-17. ENGINE
18V6570002018-09-21. ENGINE AND ENGINE COOLING:ENGINE:DIESEL
20162892016-06-08. Engine

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
P0012026-09-29. Service bulletin. "Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
41-0282026-09-29. Service campaign. The campaign expiration date has been extended from 10/01/2026 to 04/01/2027.
P0032026-09-23. Service bulletin. "KW: A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to include 1 chassis. The total chassis count is now 10. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section."
P0012026-09-23. Service bulletin. "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 Webcast has been added in the Links section. PB: The chassis list has been updated to include 8 chassis. The total chassis count is now 130. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section."
P0022026-09-23. Service bulletin. "KW: A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to include 2 chassis. The total chassis count is now 4. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section."
P0032026-08-27. Service bulletin. "KW: A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to include 1 chassis. The total chassis count is now 10. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section."
P0022026-08-27. Service bulletin. "KW: A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to include 2 chassis. The total chassis count is now 4. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section."
P0012026-08-27. Service bulletin. "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 Webcast has been added in the Links section. PB: The chassis list has been updated to include 8 chassis. The total chassis count is now 130. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section."
43-0892026-08-25. Service bulletin. This optional software update is expected to be available after 08/28/2026.
P0032026-08-25. Service bulletin. The PB chassis list has been updated to include 1 chassis. The total chassis count is now 9.