NHTSA ID Number: 11022349
Manufacturer Communication Number: IK1500093
TSB/Document Date: 2025-09-02
Summary
itle: Cummins
B6.7 & L9 EPA 2017, 2021 and 2024 Supplemental Fuel System Diagnostics - Racor and Davco Chassis Mounted Fuel Filter Applies To: Cummins L9
Countries:
CANADA, UNITED STATES
Availability:
ISIS, Bus ISIS, FleetISIS, IsSIR Revision:
Document ID: IK1500093
Major System:
Fuel system
Created:
7
1/9/2018
Current Language: English
Last Modified: 8/7/2025
Other Languages: NONE
Author:
Viewed:
Jeff Polich
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Title : Cummins B6.7 & L9 EPA 2017, 2021 and 2024 Supplemental Fuel System Diagnostics - Racor and Davco Chassis
Mounted Fuel Filter
Applies To : Cummins L9
CHANGE LOG
Please refer to the change log text box below for recent changes to this article:
02/20/2025 - Updated part numbers and micron rating, corrected FS19532 filter with wrong micron rating, and added FS20288
09/10/2024 - Responded back that we did not provide part numbers for other micron rating filters
12/03/2018 - Responded to feedback
07/10/2018 - Corrected typo
06/13/2018 - Corrected service part number to 4080114C2
DESCRIPTION
This document references Cummins Technical Service Bulletin TSB210203, which addresses Cummins fault code 559 (SPN 157 FMI 18). The bulletin
authorizes the use of a higher micron fuel filter to mitigate the issue of recurrent clogging of the suction side fuel filter before the scheduled maintenance
interval.
SYMPTOM(s)
Diagnostic Trouble Code(s) & Dashboard Indicator Light(s):
DTC/Light
Description
Injector Metering Rail 1 Pressure - Data
Valid But Below Normal Operating Range
- Moderately Severe Level
Injector Metering Rail 1 Pressure - Data
Valid But Below Normal Operating Range
- Moderately Severe Level
Cummins Fault Code 559
SPN 157-18
Customer Observations or Concerns:
MIL, low power
SPECIAL TOOL(s) / SOFTWARE
Tool Description
Tool Number
Comments
Instructions
N/A
SERVICE PARTS INFORMATION
Kit Description
Part Number
Quantity
Notes
Required
SEE Table Below
4080114C2
1
DIAGNOSTIC STEP(s)
Step Action
#1
Decision
Yes. Go to Step 2
DIAGNOSTIC:
Is fault code 157-18 (Cummins 559) active, and is the fuel filter plugging up before
the service interval?
No. Refer to your fault code's related
FCAP
Step Action
Decision
DIAGNOSTIC:
Yes. Complete fault code 559 diagnostics.
See FCAP link in the Symptoms section
of this article.
Replace the fuel filter. Refer to the tables to change to a higher micron filter and
retest for code logging.
Did the code log again during retest?
#2
No. Repairs complete
NOTE: Fleet guard filters can be purchased from International PDCs.
Racor
Filter Housing
Racor 10 Micron Filter Part
Number
Navistar or Fleetguard 10 Micron
Equivalent
Racor 30 Micron Part
Number
Navistar or Fleetguard 30 Micron
Equivalent
445R
R45T
FS19734 (12 micron Fleetguard)
No Navistar part number assigned
R45P
FS19775 (45 micron FleetGuard)
No Navistar part number assigned
460R
R60T
FS19687 ( 10 micron Fleetguard)
No Navistar part number assigned
R60P
FS1287 (24 micron FleetGuard)
No Navistar part number assigned
490R (Racor)
4079424C92
R90T
R33838DCM
4080114C2 (10 micon Navistar)
FS20288 (7 micron Fleetguard)
FS19532 (17 micron FleetGuard)
R90P
Could not cross-reference
4125R
R125T
No Cross to Fleetguard or Navistar
R125P
No Cross to FleetGuard or Navistar
R120T
FS19591 (10 micron Fleetguard)
2510993C2 (Navistar)
R120P
FS19754 (45 micron FleetGuard)
3739058C1 (Navistar)
4120R (Racor)
3990080C91 (Navistar)
Davco
Filter Housing
Fleetguard 7 or 10 Micron Equivalent
DP 245
FS20081
Fuel Pro 382
FS19764 (plus size cover 4.21")
FS19727 (Original Size Cover 3.82")
Fuel Pro 482 & 483
FS20139 (10 micron)
FS19915 (7 micron)
Fuel Pro 485, 487, 488
REPAIR STEP(s)
N/A- See step in diagnostics
Fleetguard 25 or Greater Micron Part Number
Could not cross-reference
FS19765 (plus size cover 4.21")
FS19728 (Original Size Cover 3.82")
FS19765
FS20083
Could not cross-reference
WARRANTY INFORMATION
Not Applicable
Warranty Claim Coding:
Refer to the Warranty Coding Manual for Group and Noun Codes.
Standard Repair Time(s):
Refer to the SRT Manual for Repair Times
Chassis
SRT Description
SRT Coding
4300, 4400
Fuel Filter, Replace
KL15-4167T
HX
Fuel Filter, Replace
HX15-4167UT
OTHER RESOURCES
Master Service Information Site
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Copyright © 2025 Navistar, Inc.
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TSB/Document ID: IK1500093
Replacement Service Bulletin Number:
MFR Communication Date: 2025-08-07
MFR Internal Campaign ID/Software Version: IK1500093
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: FUEL/PROPULSION SYSTEM
MFR Component System:
MFR Component Subsystem:
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