CE031 Other

CE031 MX Component Specific Emissions Warranty for

EMY2022 PACCAR MX-11 and MX-13 Engines

1/27/2026
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CE031: ​MX Component Specific Emissions Warranty for EMY2022 PACCAR MX-11 and MX-13 Engines
Whats New Abstract

1/27/2026: DPF Delta Pressure Sensor part number 2200138 for MX-11 engines has been added to this

warranty policy.
Introduction

U.S. & Canada Federal emissions regulates that the warranty coverage is a period of ten (10) years or

435,000 miles/700,000 km/22,000 engine hours, whichever comes first, from the original warranty

registration date, for these specific components on the EMY2022 PACCAR MX-11 and MX-13 Engines.

PACCAR has implemented the extension and it is effective retroactively, unless the part is listed as

ineligible for reimbursement below.
Revision

1/27/2026: DPF Delta Pressure Sensor part number 2200138 for MX-11 engines has been added to this

warranty policy.

8/19/2025-Fuel Injection Pump (2185361PE) for PACCAR MX-13 engines have been added to this warranty

policy

3/10/2025- New injector part numbers added to MX component specific emissions warranty.

12/19/2024 – DPF Delta Pressure Sensor part number 2200138PE for MX-13 engines has been added to this

warranty policy.
Condition

Units that have coverage under this warranty will be identified in the Service Information Record (SIR):
Sales Code
Coverage Description
9202162
EW: MX Emissions 10yr/435K Miles (700K KM) – Engine MY2022
Submit a long-form warranty claim through PRWS, using the applicable claim type shown in the chart

below, for any repair that meets the requirements of this bulletin. If the repair falls under campaign E290,
file a claim using appropriate quick claim code from campaign E290. Please ensure the correct VIN

number is selected and that all claim filing requirements are met.

Please use the following coding when submitting your warranty claim:

PPD Part Number
Part Description
Claim Type
Failure Location
2314737PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2314736PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2383578PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2383579PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2394547PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2394548PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2403775PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2403776PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2403200PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2403201PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2403777PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2403778PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2423651PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2423652PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2423653PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2423654PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2426853PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2426854PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2426855PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2426856PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2429854PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2429855PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2428773PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2428774PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2452061PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2452062PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2460409PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2460410PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2460411PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2460412PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2460413PEX
Fuel Injector, MX-11, EPA21
Engine
044-004-001
2460414PEX
Fuel Injector, MX-13, EPA21
Engine
044-004-001
2185361PE
Fuel Injection Pump
Engine
044-004-001
2200138
DPF Delta Pressure Sensor, MX-11, MX-13, EPA21
Engine
043-006-007
For retroactive payments please file a long-form claim, and populate parts and labor costs to the sublet

fields. Please make sure to attach an invoice and receipt to the claim to document the repair and

payment made.
Warranty

The emissions warranty will cover the repair costs for any failure of an emissions-related part described in this

bulletin that results under normal use and service, caused by a warrantable failure, which must be the result of

a defect in material and/or factory workmanship. Reimbursement will include:

Parts

Labor

Consumables (when not reusable)

Please submit a claim using one of the following claim types:

For DEF sensor claims, file a TRUCK claim.

For all other engine-related claims, file an ENGINE claim

PROACTIVE REPAIRS ARE NOT COVERED BY THIS PROGRAM.

Towing will only be covered if 'engine' emission component failure occurs within the base engine period of 24

months/250,000 miles/6,250 hours. Outside of base engine coverage, towing and travel are excluded. PACCAR
will pay for reasonable labor costs for engine removal and reinstallation when necessary to repair a

warrantable failure.

The emissions warranty is retroactive and applies to qualifying warrantable failures that customers have
already had repaired at their expense.
Components that qualify for coverage on EMY2022 PACCAR MX-11 and MX-13 Engines:
Engine Model Year
PPD Part Number
Part Description
2022 (MX-13)
2314737PEX (1)
Fuel Injector
2383579PEX (1)

2394548PEX (1)

2403776PEX (1)

2403201PEX (1)

2403778PEX (1)

2423652PEX (1)

2423654PEX (1)

2426854PEX (1)

2426856PEX (1)

2429855PEX (1)

2428774PEX (1)

2452062PEX (1)

2460410PEX (1)

2460412PEX (1)

2460414PEX (1)

2022 (MX-11)
2314736PEX (1)

2383578PEX (1)

2394547PEX (1)

2403775PEX (1)

2403200PEX (1)

2403777PEX (1)

2423651PEX (1)
Fuel Injector
2423653PEX (1)

2426853PEX (1)

2426855PEX (1)

2429854PEX (1)

2428773PEX (1)

2452061PEX (1)

2460409PEX (1)

2460411PEX (1)

2460413PEX (1)

2022 (MX13)
2185361PE(1)
Fuel Injection Pump
2022 (MX-11 and MX13)
2200138(2)
DPF Delta Pressure Sensor
(1)Part
added in a previous update.
(2)Part
added in latest update.
Attachments

U.S. Customer Letter

Canada English Customer Letter

Chassis List
Kenworth Truck Company

Customer Service Department

C/O PACCAR Parts

750 Houser Way North

Renton, WA 98057

(425) 828-5888
[Date]

Subject: CE031: MX Component Specific Emissions Warranty for EMY2022

PACCAR MX-11 and MX-13 Engines

Expiration Date: None

This notice applies to your vehicle; Your VIN(s) can be found on the front or back of this page.

Dear Kenworth Customer,

This is not a recall or campaign. You do not need to schedule an appointment with your

dealer unless you experience a problem with your vehicle.

This letter has been sent to inform you that Kenworth Truck Company has extended the warranty

coverage on certain emissions components installed on your vehicle(s). Your vehicle(s)

contain(s) one or more of the parts listed in this letter. No action is needed on your part.

The Emissions Warranty Coverage for the components listed in the table below has been

extended to 10 years, 435,000 vehicle miles/700,000 km, or 22,000 engine hours from the

original warranty registration date, whichever comes first.

Table 1 Parts Covered by Extended Warranty Coverage (EWC Code 9202162)

Part Name
Part Number
Result of Failure
Fuel Injector (MX-13,

EPA21)
2314737PEX (1)

2383579PEX(1)

2394548PEX (1)

2403776PEX (1)

2403201PEX (1)

2403778PEX (1)

2423652PEX (1)

2423654PEX (1)

2426854PEX (1)

2426856PEX (1)

2429855PEX (1)

2428774PEX (1)

2452062PEX (1)

2460410PEX (1)

2460412PEX (1)

2460414PEX (1)
Inefficient fuel injector performance can lead to

insufficient regeneration and high soot loading of

DPF due to uneven fuel burning.
Kenworth Truck Company

Customer Service Department

C/O PACCAR Parts

750 Houser Way North

Renton, WA 98057

(425) 828-5888
Fuel Injector (MX-11,

EPA21)
2314736PEX (1)

2383578PEX (1)

2394547PEX (1)

2403775PEX (1)

2403200PEX (1)

2403777PEX (1)

2423651PEX (1)

2423653PEX (1)

2426853PEX (1)

2426855PEX (1)

2429854PEX (1)

2428773PEX (1)

2452061PEX (1)

2460409PEX (1)

2460411PEX (1)

2460413PEX (1)
Inefficient fuel injector performance can lead to

insufficient regeneration and high soot loading of

DPF due to uneven fuel burning.
Fuel Injection Pump

(MX-13, EPA21)
2185361PE (1)
Failures of the Fuel Injection Pumps that result in

inaccurate monitoring of exhaust gases have the

potential to compromise SCR system effectiveness

and affect tailpipe emissions of NOx.
DPF Delta Pressure

2200138 (2)

Sensor (MX-11, MX-13,

EPA21)
Failures of the Delta Pressure Sensor that result in

inaccurate monitoring of the DPF/SCR have the

potential to compromise the DPF/SCR system

effectiveness and affect tailpipe emissions of NOx

and/or particulate matter.

(1)

Components that were included in a previous letter.

(2)

Additional component added to Extended Warranty Coverage.
If you have previously paid to replace one of the components listed in the tables above, you may

be eligible for reimbursement of the cost of parts and labor. Please provide your Kenworth

Dealer with a receipt for the repair and your dealer will file a claim on your behalf. If approved,

your dealer will issue reimbursement.

To locate your nearest dealer please scan the QR code at the top of this letter or use the Dealer

Locator at www.Kenworth.com. When contacting your selected Kenworth dealer, refer to

Extended Warranty Code (EWC) 9202162 and the VIN listed on this letter.
Kenworth Truck Company

Customer Service Department

C/O PACCAR Parts

750 Houser Way North

Renton, WA 98057

(425) 828-5888
If you are the lessor of this vehicle, federal regulations require you to forward a copy of this

notice to the lessee within ten days. If you no longer own this vehicle, please email the last 8

digits of the VIN and the new owner’s name and address to servicebulletins@paccar.com.

Sincerely,

Kenworth Customer Service

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