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Perkins DPF Assemblies
Perkins T431585 DPF Assembly
A Perkins 900 Series DPF assembly — that is how Perkins’ own parts shop lists it, and the only public description the number carries. The filter traps soot in the exhaust. It is not a DOC, not an SCR catalyst and not a universal DPF. Whether it fits your engine depends on the serial number, the build list and the number on the old unit.
- Part number
- T431585
- Type
- DPF assembly
- Engine reference
- Perkins 900 Series
What the Perkins T431585 DPF Assembly Is
The T431585 is a diesel particulate filter assembly: the serviceable unit holding the soot filter. It sits downstream of the diesel oxidation catalyst on builds that use both. Exhaust passes through the DOC, the DPF, then an SCR catalyst where fitted. Soot burns off during regeneration; ash does not. At the service point, the assembly is cleaned or replaced.
A catalyst is not a filter. Numbers such as T434415 and T433663 appear in the same parts family as catalysts — different components, not alternative assemblies. Confirm which role your engine build requires.
Engine serial & build list
Provide the engine serial number and build list. The part number alone does not confirm fitment to a specific build.
Aftertreatment layout
Confirm whether the build uses a combined emissions module or split DOC, DPF and SCR housings.
Complete old part number
Send the full number printed on the removed unit, including any suffix. If the records disagree, send all of them for review.
Adjacent Numbers: T431586, T431592, T431008 and T435981
These numbers share a naming family and often a photograph style. They do not share a fitment. Those fitment notes come from Perkins and dealer listings and do not transfer to T431585. If your engine matches one of those models, check the build record rather than assuming the nearest number fits.
| Number | Listed As | What It Tells You |
|---|---|---|
| T431586 | DPF assembly | A separate assembly with its own listing |
| T431592 | DPF assembly | A separate assembly |
| T433389 | DPF assembly | A separate assembly |
| T431008 | DOC/DPF filter assembly | Published for 904J-E36TA and 1204J-E44TA/TTA |
| T435981 | DPF/DOC assembly | Published for 904J-E28T/E28TA, prefixes FL and FM |
| T434415 / T433663 | Catalyst | A different component in the module |
Swipe horizontally to view all columns.
Perkins T431585 DPF Assembly Cross-References: 135936430 and 2731581
| Number | Where it appears |
|---|---|
| 135936430 | A reseller listing titled “PERKINS 135936430 DPF ASSY”, with T431585 recorded as the SKU. The two numbers may be a supersession, two build variants, or one merged record — no Perkins document seen confirms which. |
| 2731581 | A single B2B listing as “ORIGINAL DPF ASSY”. No second source or manufacturer record found. Treat it as a lead to check, not a number to order. |
Two other numbers circulate with T431585. Neither is confirmed here as the same part. A cross-reference is a candidate to review, not proof of equivalence. Use the filter lookup to start the check.
What to Send for a T431585 Quote
Start with the engine record, not the part number.
Engine serial / engine prefix / CEM label number
Send the engine serial number, the engine prefix and the complete number on the CEM label. Add the old part number and a photograph if the label is worn.
If you need a genuine original assembly, declare it before we quote; any alternative will be labelled as one.
What the reply will state.
The offered assembly, its maker, its complete number, the package contents, availability and the delivery terms.
No real-time stock feed: availability is confirmed against your list. Fleet and dealer buyers can send a multi-engine list and receive each line quoted separately. How we verify a part number explains the checks.
Request a QuoteFrequently Asked Questions
Is T431585 a DPF or a DOC?
It is a DPF. The DOC is a separate oxidation catalyst, and on some builds the two sit in one module. The number identifies the particulate filter assembly.
What engine does Perkins T431585 fit?
Perkins lists it at 900 Series level. No public record seen here names a specific model or serial range. Confirm with the engine serial number and build list.
Is 135936430 the same as T431585?
It is a reported cross-reference, not a confirmed supersession. One reseller records both numbers against the same item. Send both numbers with the engine serial for checking.
Is 2731581 the same as T431585?
It appears in one B2B listing and no manufacturer record. Treat it as unconfirmed until a Perkins parts record or a second source agrees.
Can a T431585 DPF be cleaned instead of replaced?
It depends on the model and the substrate. Perkins publishes cleaning, remanufactured and new routes, and cleaning is not available on every model. Confirm before ordering.
What is included with the assembly?
Confirm it in the quotation. Do not assume clamps, gaskets, sensors or mounting hardware are included. The quote should list what ships.
Why does a search for T431585 show a tyre?
The same string is used by other industries, including a tyre product code and a chemical catalogue number. Check the brand and description, not the number alone.
Confirm the Number, Then Confirm the Build
Send the engine serial, the engine prefix and the number from the CEM label. If 135936430 or 2731581 is written on the old unit, send that as well.
We will confirm the offered assembly, its complete number, the contents and the delivery terms in the quote.