Diesel fuel filter maintenance, in a parts catalogue, comes down to the replacement part: the filter that is removed and the listed filter that goes in its place. This catalogue's fuel filter range is five detailed listings, all for Perkins diesel applications, with Cummins named at category level on the catalogue's category page. The listings print no service intervals and no fitting procedures, and this article invents neither. What it sets out is the maintenance-relevant content the listings do carry — the function each filter is stated to perform, its construction, its dimensions and its cross references — because those are the facts a fleet buyer or distributor works with when the filters are being sourced.
The function the listings state
The lead listing, 26560201, states the filter's function directly: the removal of oil, water, dust and other particles. That is the catalogue's own description of what the part does in service, printed on the listing, and it is the functional claim this article makes for the range. The other four listings — 4816636, 4461492, 26560145 and 4326658 — are presented by their construction, dimensions, applications and cross references, in the same format. None of the five prints a service interval, a water-capacity figure or a change procedure; maintenance scheduling belongs to the engine's own documentation, and the catalogue's contribution to maintenance is the correctly identified part.
The five references
| Reference | Applications as listed | Size as listed | Cross references as listed |
|---|---|---|---|
| 26560201 | Perkins A Series, Powerfarm, Technofarm | OD87 x H204 | PU8041z, 33804, MD-569, K11141 |
| 4816636 | Perkins Powerfarm, Series PX, Vision | OD76 x H158 and OD87 x H204 (both printed on the entry — see the caution below) | PU8041z, 33804, P551354 |
| 4461492 | Perkins X50, X50.20, X50.30 | OD81 x H155 | PF46137, E817KP, 296854 |
| 26560145 | Perkins DT Series, 123 Saloon, T1 Bus | OD83 x H135 | PS9127, WK8122, 33547, P551429 |
| 4326658 | Recorded inconsistently — the entry heading names DT Series, 123 Saloon, T1 Bus; its captured product title names Allis Chalmers, Massey Ferguson, New Holland | OD88 x H70 | BF825, P502420, FF167, HDF296 |
Two features of the table repay attention. The first two listings share the head of their cross sets — PU8041z and 33804 appear against both 26560201 and 4816636 — so one of those numbers alone does not select a single listing; the buyer separates them using the application lists and the size figures as printed — with a caution on the 4816636 figures, set out below. One caution on that listing: the 4816636 entry prints its size twice, inconsistently — OD76 x H158 under one size line and OD87 x H204 under the other — so the table above carries both figures and this site states neither as the settled size for 4816636; check the size for that number in your enquiry before ordering. The 4326658 entry carries a different inconsistency, recorded in the table rather than resolved: its section heading names DT Series, 123 Saloon and T1 Bus (the title the 26560145 entry carries), while the product title captured on the same entry names Allis Chalmers, Massey Ferguson and New Holland, and neither list is stated here as the settled one — for this reference, include the number and your application in your enquiry and check them before ordering. The lesson stands from the other direction: the title does not identify the part, the number does.
Construction as listed
The lead listing's construction is printed in full: a steel housing, filter paper media, a rubber O-ring gasket and a steel bypass valve. The other four listings share a second construction pattern as printed: a steel housing, fuel-grade filter paper media, plastic end caps and a rubber O-ring seal. These are the components the replacement part consists of, as the manufacturer lists them — the housing, the media, the end caps where fitted, the seal, and on the lead listing the bypass valve. A buyer verifying a part against its listing checks the reference, the dimensions (OD87 x H204 on the lead listing, and the figures printed per listing across the others — with the 4816636 caution above) and this construction.
Reading the cross sets
The cross-reference sets in this family reward a careful read, because the first two interlock. PU8041z and 33804 head the sets of both 26560201 and 4816636; the sets then diverge — MD-569 and K11141 complete the first, P551354 completes the second. A buyer whose stock system holds PU8041z therefore has two candidate listings, not one, and the disambiguation is printed on the same listings: the applications (A Series, Powerfarm, Technofarm against Powerfarm, Series PX, Vision) and the dimensions as printed (OD87 x H204 on 26560201; the 4816636 entry prints two figures, as noted above). The remaining three sets stand apart — PF46137, E817KP and 296854 against 4461492; PS9127, WK8122, 33547 and P551429 against 26560145; BF825, P502420, FF167 and HDF296 against 4326658 — so a number from those sets selects its listing directly. This is the general cross-reference discipline of the catalogue — number in, application check, single number out — with the added caution the first pair requires: in this family, the check step is not a formality.
The Cummins mention, stated precisely
Cummins appears in this catalogue's fuel line at category level: the category page names Cummins among the application coverage, and no Cummins-specific fuel filter detail listing is published. The accurate statement is the narrow one — a Cummins fuel filter enquiry can only be raised by OE number, not pointed to a listed line — and the diesel fuel filters page presents the range with exactly that boundary. Buyers with Cummins references send the number; the five detailed listings above are Perkins throughout.
Holding the range as spares
For a fleet buyer, the five references behave as three stocking patterns. The first pair (26560201, 4816636) shares the head of its cross sets, so stock records keyed to PU8041z or 33804 need the application or the size to separate them. The 26560145 reference and the inconsistently recorded 4326658 entry separate on number, size and set. The X50 reference (4461492) stands alone on all three fields. None of that is visible from the Perkins name alone — it is visible only in the listings, which is why this article works from them.
Matching and ordering
Matching runs on the OE number, with the dimensions and cross references as the checks the table provides — the method generalised in oil filter cross reference: how to match OE numbers applies to this family with the overlap caution noted above. Samples are offered free. No fuel listing prints its own delivery window; the company FAQ gives a general figure of 30–40 days. For a fleet buyer, the working set is the five references with their applications: stock is held against the numbers the fleet's engines carry, and replenishment is ordered by the same numbers.
Frequently asked questions
How often should these diesel fuel filters be changed?
The listings print no service interval, and this site attaches none to these references. The engine's own documentation governs scheduling; the catalogue supplies the identified replacement part.
What do the listings say the filter does?
The lead listing, 26560201, states the function as the removal of oil, water, dust and other particles. The other listings are presented by construction, dimensions, applications and cross references.
Is there a listed Cummins fuel filter?
No detailed Cummins listing is published. Cummins is named at category level, so for a Cummins reference, send the OE number in your enquiry; the five detailed listings are Perkins applications.
Request an OE-matched filter quote
Send the Perkins number or the number on the filter being replaced, plus quantity.