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Cummins DEF Filters
Fleetguard UF101 DEF Filter
The Fleetguard UF101 DEF filter is a urea element for the SCR aftertreatment system on Cummins engines. The element your engine takes is confirmed against the engine build and the complete number on the element being replaced — not by the number alone.
- Part number
- UF101
- Type
- DEF / urea element
- Engine reference
- Cummins 5303604 (to be confirmed)
Availability and delivery terms confirmed with quotation.
What This Page Covers — and What It Does Not
This page covers the Fleetguard UF101 DEF filter as a reference number: what it is, what to confirm, and how a requirement is quoted. The rest of the range sits under the Cummins DEF filters page, within the Cummins filter range.
This is not a stock list, a price list, or a fitment certificate. Availability, pricing, warranty, and delivery terms are confirmed per quotation. With the build and the old element’s number, request a Fleetguard UF101 quote.
Engine model & build
Send the engine maker, model and full serial or build number, and the emissions stage.
Installed position
Confirm the DEF/urea filter position and the SCR system arrangement.
Complete old part number
Send the full number printed on the removed element, including every suffix. If two records disagree, send both.
What the Fleetguard UF101 DEF Filter Is
A DEF filter removes urea crystals and particulates from the diesel exhaust fluid before it reaches the dosing pump. A blocked or bypassed element can fault the SCR system and derate the engine, so the correct element matters.
| Check | Value to compare | How to confirm |
|---|---|---|
| OEM Cross-reference | Cummins 5303604 | Check the build record |
| Known Application | EPA13 15-litre ISX/QSX engines | Confirm via engine serial |
| Element type | DEF / urea filter | Match the old element |
| Brand | Fleetguard | Verify the maker on the part |
Swipe horizontally to view all columns.
UF101 Cross-References
| Brand | Candidate reference |
|---|---|
| Cummins | 5303604 |
Candidate references only. Lists differ; confirm against the engine record.
Applications & ordering
Start with the engine, not the number.
EPA13 15-litre ISX/QSX engines
Fleetguard is Cummins Filtration’s filter brand, and the UF101 element cross-references to the Cummins OEM number 5303604. Cummins’ parts listing describes that number as used primarily on EPA13 15-litre ISX/QSX engines.
The application is confirmed against the build, not assumed from the badge.
Know exactly what is being quoted.
Each line is checked against the parts record and filter position. Your quotation states the offered item, maker, complete part number, quantity and delivery terms.
Availability is confirmed against your list. No real-time stock feed is published.
Request a QuoteFrequently Asked Questions
What is the Fleetguard UF101 DEF filter?
A DEF filter removes urea crystals and particulates from the diesel exhaust fluid before it reaches the dosing pump. A blocked or bypassed element can fault the SCR system and derate the engine, so the correct element matters.
Is Fleetguard UF101 the same as a Cummins filter?
Fleetguard is Cummins Filtration’s filter brand, and UF101 cross-references to the Cummins OEM number 5303604. Fitment is confirmed against the engine build, not the number alone.
How do I confirm UF101 fits my engine?
By the engine serial or build number, the complete number on the removed element, and the installed position.
Can I cross-reference UF101 to another brand?
A cross-reference is a candidate to review, not proof of fitment. Send both numbers with the build.
Confirm the Build, Then the Number
A Fleetguard UF101 DEF filter is quoted against an engine build, an installed position, and a complete number, in that order. Send the engine serial or build number, the complete number on the element being replaced, the position, and whether you need a genuine original or an alternative. We will confirm the item and the delivery terms line by line.