CE031 Other

CE031: MX Component Specific Emissions Warranty for

EMY2022 PACCAR MX-11 and MX-13 Engines

1/27/2026
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Whats New Abstract

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) or 22,000 engine hours from the original warranty registration date,

whichever comes first, 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

01/27/2026 – DPF Delta Pressure Sensor part number 2200138 for MX-11 engines has been added to

this warranty policy.

08/19/2025 – Fuel injector pump part number 2185361 for MX-13 engines has been added to this

warranty policy.

03/26/2025 – Fuel injector part numbers for MX-11 and MX-13 engines have been added to this warranty

policy.

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

to this warranty policy.

04/02/2024 – Fuel injector part number 2314736PEX for MX-11 engines has been added to this warranty

policy.

08/30/2023 – Fuel injector part number 2314737PEX for MX-13 engines has been added to this warranty

policy.
Condition

Units that have coverage under this warranty will be identified in Service Information Record
(SIR):

Sales Code
​ overage

C

Description
​9480836
​ W: MX

E

Emissions

10yr/435K

Miles (700K

KM) Engine

MY2022
​ PD Part

P

Number
​Part

​Claim ​Failure

Description Type Location

​Injector,

​044-004​2314737(PEX) MX-13, ​Engine

001

EPA21

​Injector,

​044-004​2314736(PEX) MX-11, ​Engine

001

EPA21

Fuel

Injector,

​044-0042383578(PEX)​

​Engine

MX-11,

001

EPA21​

Fuel

Injector,

​044-0042383579(PEX)​

Engine​

MX-13,

001

EPA21​

Fuel

Injector,

​044-0042394547(PEX)​

​Engine

MX-11,

001

EPA21​

Fuel

Injector,

044-004​2394548(PEX)

​Engine

MX-13,

001​

EPA21​

Fuel

Injector,

​044-0042403775(PEX)​

​Engine

MX-11,

001​

EPA21​

Fuel

Injector,

​044-0042403776(PEX)

Engine​

MX-13,

001​

EPA21​

Fuel

Injector,

​044-0042403200(PEX)

Engine​

MX-11,

001

EPA21​

​Fuel

Injector,

​044-0042403201(PEX)

​Engine

MX-13,

001​

EPA21

2403777(PEX)

Fuel

​Engine ​044-004Injector,

001
2403778(PEX)​
2423651(PEX)​
2423652(PEX)​
2423653(PEX)
2423654(PEX)
2426853(PEX)
2426854(PEX)​
2426855(PEX)
2426856(PEX)
2429854(PEX)
2429855(PEX)
2428773(PEX)
2428774(PEX)​

2452061(PEX)​
MX-11,

EPA21​

Fuel

Injector,

MX-13,

EPA21​

Fuel

Injector,

MX-11,

EPA21​

​Fuel

Injector,

MX-13,

EPA21

Fuel

Injector,

MX-11,

EPA21​

​Fuel

Injector,

MX-13,

EPA21

Fuel

Injector,

MX-11,

EPA21​

​Fuel

Injector,

MX-13,

EPA21

Fuel

Injector,

MX-11,

EPA21​

Fuel

Injector,

MX-13,

EPA21​

Fuel

Injector,

MX-11,

EPA21​

​Fuel

Injector,

MX-13,

EPA21

Fuel

Injector,

MX-11,

EPA21​

​Fuel

Injector,

MX-13,

EPA21

​Fuel

Injector,
​Engine
​044-004001
Engine​
​044-004001​
Engine​
​044-004001
Engine​
​044-004001
​Engine
​044-004001​
Engine​
​044-004001
Engine​
​044-004001
​Engine
​044-004001​
​Engine
​044-004001​
Engine​
​044-004001​
Engine​
​044-004001
​Engine
​044-004001​
​Engine
​044-004001
Engine​​044-004001​
MX-11,

EPA21

​Fuel

Injector,

​044-0042452062(PEX)​

​Engine

MX-13,

001​

EPA21

​Fuel

Injector,

​044-0042460409(PEX)

​Engine

MX-11,

001​

EPA21

​Fuel

Injector,

​044-0042460410(PEX)​

Engine​

MX-13,

001

EPA21

Fuel

Injector,

​044-004​2460411(PEX)

​Engine

MX-11,

001​

EPA21​

​Fuel

Injector,

​044-0042460412(PEX)​

Engine​

MX-13,

001​

EPA21

Fuel

Injector,

​044-0042460413(PEX)

​Engine

MX-11,

001​

EPA21​

Fuel

Injector,

​044-0042460414(PEX)​

Engine​

MX-13,

001

EPA21​

​Fuel Injector

Pump, MX​044-0032185361(PE)​

​Engine

11, MX-13,

218

EPA21

DPF Delta

Pressure

​043-006​2200138

Sensor, MX- ​Engine

007

11, MX-13,

EPA21​

For reimbursement of past repairs, unless noted above as not eligible, file a claim in accordance

with the warranty procedure manual.

Attach an invoice and receipt to the claim to document the repair and payment made.

In addition, attach receipt of reimbursement made to customer for the initial invoice/costs of repair.

Retroactive claims without these items will be denied.
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)
N OT E

Cummins-powered chassis do

not have Extended Emissions

Coverage under this bulletin.
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, whichever comes first. 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 MY2022 PACCAR MX Engines:

2314737PEX(1)

2383579PEX(1)

2394548PEX(1)

2403776PEX(1)

2403201PEX(1)

2403778PEX(1)

2423652PEX(1)

​2022 (MX- 2423654PEX(1)

​Fuel Injector

13)

2426854PEX(1)

2426856PEX(1)

2429855PEX(1)

2428774PEX(1)

2452062PEX(1)

2460410PEX(1)

2460412PEX(1)

2460414PEX(1)​

2314736PEX(1)

2383578PEX(1)

2394547PEX(1)

2403775PEX(1)

2403200PEX(1)

2403777PEX(1)

2423651PEX(1)

​2022 (MX- 2423653PEX(1)

11)

2426853PEX(1)

2426855PEX(1)

2429854PEX(1)

2428773PEX(1)

2452061PEX(1)

2460409PEX(1)

2460411PEX(1)

2460413PEX(1)

2022 (MX2185361PE(1)

13)

2022 (MX11

and MX13)
2200138(2)
Fuel

Injection

Pump

DPF Delta

Pressure

Sensor
(1)
Component added in previous

Extended Warranty Coverage update.

(2) Additional component added to
Extended Warranty Coverage.
If there is a failure on any of the parts listed above, submit a warranty claim through PACCAR

Registration and Warranty System (PRWS). Ensure the correct VIN number and Causal Part removed

from the vehicle are on the submitted claim.
Attachments

CE031 PB Chassis List

CE031 PB US Customer Letter

CE031 PB US Customer Letter - Spanish

CE031 PB Canadian Customer Letter

CE031 PB Canadian Customer Letter - French
Peterbilt Motors 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 Peterbilt Customer,

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

dealer unless your vehicle experiences a problem.

This letter has been sent to inform you that Peterbilt Motors 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 (EWC Code 9480836)

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.
Peterbilt Motors 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 any of the components listed in the table above, you may

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

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 Peterbilt dealer, please scan the QR code at the top of this letter or use

Find a Dealer at www.Peterbilt.com. When contacting your selected dealer, refer to Extended

Warranty Code (EWC) 9480836 and the VIN listed below or on the back of this letter.
Peterbilt Motors 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,

Peterbilt Customer Service

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