NHTSA ID Number: 11021404
Manufacturer Communication Number: CE033
TSB/Document Date: 2025-08-05
Summary
32 fuel injector part numbers (16 for MX-11 and 16 for MX-13) have been added to this warranty policy.
7/2/25, 4:41 PM
Emission Service Bulletin
CE033: MX Component-Specific Emissions Warranty for EMY2023 PACCAR
MX-11 and MX-13 Engines
7/2/2025
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MX Component-Specific Emissions Warranty for EMY2023 PACCAR MX-11 and MX-13 Engines
Whats New Abstract
32 fuel injector part numbers (16 for MX-11 and 16 for MX-13) have been added to this warranty policy.
Introduction
U.S. and Canadian Federal emissions regulations require 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 EMY2023 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
07/02/2025 – 32 fuel injector part numbers (16 for MX-11 and 16 for MX-13) have been added to this warranty policy.
Condition
Units that have coverage under this warranty will be identified in Service Information Record (SIR):
Sales Code
Coverage Description
9202164
EW: MX Emissions 10yr/435K Miles (700K km) – Engine MY2023
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. Please ensure the correct VIN number is selected and that all claim filing requirements are met.
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Emission Service Bulletin
Use the following coding when submitting your warranty claim:
PPD Part Number
Part Description
Claim Type
Failure Location
2314736(PEX)
INJECTOR, MX-11, EPA21
Engine
044-004-001
2314737(PEX)
INJECTOR, MX-13, EPA21
Engine
044-004-001
2383578(PEX)
INJECTOR, MX-11, EPA21
Engine
044-004-001
2383579(PEX)
INJECTOR, MX-13, EPA21
Engine
044-004-001
2394547(PEX)
INJECTOR, MX-11, EPA21
Engine
044-004-001
2394548(PEX)
INJECTOR, MX-13, EPA21
Engine
044-004-001
2403200
Engine
044-004-001
2403201
Engine
044-004-001
2403775(PEX)
INJECTOR, MX-11, EPA21
Engine
044-004-001
2403776(PEX)
INJECTOR, MX-13, EPA21
Engine
044-004-001
2403777(PEX)
INJECTOR, MX-11, EPA21
Engine
044-004-001
2403778(PEX)
INJECTOR, MX-13, EPA21
Engine
044-004-001
2423651
Engine
044-004-001
2423652
Engine
044-004-001
2423653
Engine
044-004-001
2423654
Engine
044-004-001
2426853(PEX)
INJECTOR, MX-11, EPA21/24
Engine
044-004-001
2426854(PEX)
INJECTOR, MX-13, EPA21/24
Engine
044-004-001
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Emission Service Bulletin
2426855(PEX)
INJECTOR, MX-11, EPA21/24
Engine
044-004-001
2426856(PEX)
INJECTOR, MX-13, EPA21/24
Engine
044-004-001
2428773
Engine
044-004-001
2428774(PEX)
INJECTOR, MX-13, CARB 24
Engine
044-004-001
2429854
Engine
044-004-001
2429855
Engine
044-004-001
2452061
Engine
044-004-001
2452062
Engine
044-004-001
2460409
Engine
044-004-001
2460410
Engine
044-004-001
2460411
Engine
044-004-001
2460412
Engine
044-004-001
2460413
Engine
044-004-001
2460414
Engine
044-004-001
For retroactive payments, file a long form claim and populate parts and labor costs to the sublet fields. 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
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Emission Service Bulletin
include:
Parts
Labor
Consumables (when not reusable)
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.
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Emission Service Bulletin
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.
These components qualify for coverage on EMY2023 PACCAR MX-11 and MX-13 Engine:
Engine Model
Year
PPD Part Number
Part Description
2023 (MX-13)
2314737
2383579
2394548
2403201
2403776
2403778
2423652
2423654
2426854
2426856
2428774
2429855
2452062
2460410
2460412
2460414
2023 (MX-11)
2314736
2383578
2394547
2403200
https://paccarnet.sharepoint.com/sitepages/emissvcbltin.aspx?ctx=eyJ3ZWJVcmwiOiJodHRwczovL3BhY2Nhcm5ldC5zaGFyZXBvaW50LmNvbS9zaXRlcy9hdXRob3JzZXJ2aWNlIiwibGlzdElkIjoiNGExY…
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Emission Service Bulletin
2403775
2403777
2423651
2423653
2426853
- Restores fuel economy
- Stabilizes ethanol
- Maximizes horsepower
- Improves responsiveness
- For use in both gasoline and diesel engines
- DESIGNED TO EXCEED EXPECTATIONS: Red Line complete SI-1 fuel...
- PERFORM AND PROTECT: Fuel additive cleans injectors...
- EFFICIENT FUEL BURN: Gas treatment that enhances gasoline...
- EASY TO USE: Use one bottle per tank for most effective...
- 15 Ounce (2 Pack)
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TSB/Document ID: CE033
Replacement Service Bulletin Number:
MFR Communication Date: 2025-07-03
MFR Internal Campaign ID/Software Version:
Communication Type: Warranty Program/Extension
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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