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Perkins DEF Filters
Perkins 4951506 DEF Filter
A diesel exhaust fluid filter in the SCR aftertreatment system, not an engine-service filter. Confirm the dosing module, pump and engine serial before ordering.
- Part number
- 4951506
- Type
- DEF (diesel exhaust fluid) filter
- Engine reference
- Perkins aftertreatment (module and pump confirmation required)
Availability and delivery terms confirmed with quotation.
What the 4951506 Is, and Where It Sits
The 4951506 is a DEF filter in the selective catalytic reduction system. Diesel exhaust fluid moves from the tank toward the dosing unit, and the filter removes contamination before the fluid reaches the module and the injector. It protects the dosing module and the pump.
The point is where it sits. This is aftertreatment, not engine service. The filter is matched to the dosing configuration, the module and the pump, which is why the category note says to verify those rather than just the engine serial.
DEF module & pump configuration
Identify the dosing module and pump the filter serves. The engine model alone does not settle the element.
Engine serial & emissions stage
Provide the engine model, full serial and emissions stage or configuration.
Complete old part number
Send the full number printed on the removed filter, including any suffix.
Specifications, and How a 4951506 Order Is Quoted
We do not republish retailer dimensions. Any thread, outside diameter, height or micron figure that appears on seller pages is a copied spec, not evidence, and it is withheld as confirmed per quotation. The same holds for any media or efficiency figure.
| Check | Value to compare | How to confirm |
|---|---|---|
| Thread | Not published | Confirmed per quotation |
| Outside diameter | Not published | Confirmed per quotation |
| Height | Not published | Confirmed per quotation |
| Micron rating | Not published | Confirmed per quotation |
| Media / efficiency | Not published | Confirmed per quotation |
| Order line | Offered element, maker, complete number, quantity, delivery terms | Stated in your quotation |
Swipe horizontally to view all columns.
4951506 Cross-References Are Candidates, Not Confirmations
| Item | Status |
|---|---|
| Confirmed cross-reference set | Not published |
| Candidate interchange numbers | Treat as candidates to check against the DEF module and pump |
| Bare element vs kit | Not interchangeable without a parts-record check |
No confirmed cross-reference set is published here. Verify with filter lookup before treating any number as settled.
Aftertreatment, Not Engine Service, and Why That Changes the Check
Keep the two service lists separate.
Perkins aftertreatment / SCR system
DEF is a separate category from engine-service filtration. The 4951506 does not sit on the routine fuel, oil, air or coolant schedule. Its service follows the emissions configuration, so a buyer planning a scheduled service keeps the engine-service list and the aftertreatment items separate.
List the fuel, oil and air elements for the engine build, then list the DEF filter against the dosing module and pump.
Know exactly what is being quoted.
Each line is checked against the parts record and emissions configuration. 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 Quote4951506 vs T435902: Two DEF Filters, One Category Reference
The 4951506 and the T435902 are the two Perkins DEF filters in this category, and both carry the same category-level reference. There is no individual product listing behind either number in the source material.
Do not treat them as interchangeable. Which one applies is a module-and-pump question, decided against the engine serial and the emissions configuration, not a number question. Read the complete number off the removed filter and confirm it against the parts record for the build.
Module & pump check
Identify the dosing module and pump configuration before choosing between DEF elements.
Complete number check
Read the full number off the removed filter, including any suffix.
No interchange assumption
Do not substitute 4951506 for T435902, or the reverse, without a parts-record check.
Frequently Asked Questions
What does the Perkins 4951506 fit?
It is a DEF filter in the aftertreatment system, matched to the dosing module and pump. The category reference is a page, not an individual product listing, so confirm by engine serial and emissions configuration.
Is the 4951506 the same as the T435902?
No. They are the two Perkins DEF filters in this category, both carrying the same category-level reference. Which one applies is a module-and-pump question. Confirm the complete number.
Is a DEF filter an engine-service filter?
No. A DEF filter belongs to the aftertreatment system. It is listed separately from the fuel, oil, air and coolant filters and follows the emissions configuration, not the routine service schedule.
What does the 4951506 cross to?
No confirmed cross-reference set is published for this number. Its reference is a category page, not a product page. Treat any interchange number as a candidate to check against the module and pump.
What should I send to get the 4951506 confirmed?
Send the engine model and serial, the DEF module and pump configuration, the emissions stage, and the number off the removed filter. We will confirm the offered element and delivery terms.
Confirm the Module, Then Confirm the Number
Send engine model, serial number, DEF module and pump configuration, emissions stage, and the number off the filter you are replacing.