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Perkins Coolant Filters
Perkins 26550001 Coolant Filter
A spin-on coolant element with a Perkins Shop listing naming the 1300 Series. It also surfaces in Cummins builds; confirm the build and coolant chemistry before ordering.
- Part number
- 26550001
- Type
- Spin-on coolant filter
- Engine reference
- Perkins 1300 Series / Cummins cross-application (serial confirmation required)
Availability and delivery terms confirmed with quotation.
What the 26550001 Is, and Its 26550002 Sibling
The 26550001 is a spin-on coolant filter that sits in the engine cooling circuit. It removes debris from the coolant and, depending on the configuration, carries a coolant-conditioning additive that protects against corrosion and liner pitting.
Perkins Shop lists it as a “water filter” and confirms fitment for the 1300 Series, including the 1306-8T and 1306-9T, the 1306-E87T and 1306-E87TA, and the 1300 Series EP, IOPU and EDi families. That listing is the documentation the sibling 26550002 does not have. The 26550002 is referenced only through a distributor page and aftermarket interchanges.
1300 Series mapping
Confirm by engine serial, including the 1306 variants and the EP, IOPU and EDi families. The series name alone does not confirm fitment.
Sibling number check
26550002 is one digit away and distributor-referenced. Do not treat the two as interchangeable.
Coolant chemistry
Confirm whether the filter carries a coolant-conditioning additive or is blank, against the coolant specification for the build.
Specifications, and How a 26550001 Order Is Quoted
We do not republish retailer dimensions. Outside diameter, height and thread that appear on seller pages vary between listings, and a copied spec is not evidence. The same holds for any efficiency or additive figure. Dimensions, efficiency and additive content are confirmed against the manufacturer specification for the build when we quote.
| Check | Value to compare | How to confirm |
|---|---|---|
| Thread | 11/16-16 (retailer-cited) | Match the old filter / confirm per quotation |
| Outside diameter | ~93–94 mm (retailer-cited) | Confirm per quotation |
| Height | ~135–138 mm (retailer-cited) | Confirm per quotation |
| Additive content | Coolant-conditioning additive or blank, depending on configuration | Confirm against coolant chemistry |
| Order line | Offered element, maker, complete number, quantity, delivery terms | Stated in your quotation |
Swipe horizontally to view all columns.
26550001 Cross-References Are Candidates, Not Confirmations
| Brand | Candidate reference |
|---|---|
| Donaldson | P552075 / P552074 |
| Fleetguard | WF2074 / WF2104 (also Fleetrite WFR82074 / WFR82104) |
| Baldwin | BW5074 / BW5174 |
| WIX | 24197 / 524197 |
| UFI | 29.009.00 |
| Cummins | 3315114 / 3100307 / 3315788 |
| MANN-FILTER | WA940/17 |
| Hengst | H32WF |
Candidate references only. Lists differ; confirm against the engine serial and coolant chemistry. Verify with filter lookup before treating as settled.
26550001 vs 26550002: One Digit, Different Documentation
The 26550001 and the 26550002 are one digit apart and both sit in this coolant category, but they carry different documentation weight. The 26550001 has a Perkins Shop listing that names the 1300 Series. The 26550002 does not; its listing trail runs through a distributor page and aftermarket interchanges.
Do not treat them as interchangeable. A coolant filter that is right for one build can be wrong for another, and the additive content differs by configuration. Read the complete number off the removed filter and confirm it against the parts record for the build.
Complete number check
Read the full number off the removed filter, including any suffix.
Documentation check
26550001 has a Perkins Shop listing; 26550002 is distributor-referenced.
No sibling substitution
Do not substitute 26550002 without a parts-record and chemistry check.
A Perkins Number, a Cummins Trail, and the “Water Filter” Name
Cross-application trail, not a fitment certificate.
Perkins 1300 Series / Cummins cross-application (numbers such as 3315114)
The 26550001 is a Perkins-referenced element, but it also surfaces in Cummins contexts. Cross-references include Cummins numbers such as 3315114, 3100307 and 3315788, and Fleetguard numbers WF2074 and WF2104. That is a cross-application trail, not a fitment certificate. Confirm the engine maker, model and serial before treating either application as settled.
Perkins Shop also names this family a “water filter,” where the CSV and the trade say “coolant filter.” They are the same element. The name matters less than the chemistry: confirm the additive content against the coolant specification for the build, not from a reseller table.
Confirm engine maker, model and serial before treating either application as settled.
Know exactly what is being quoted.
Each line is checked against the parts record and coolant chemistry. 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 does the Perkins 26550001 fit?
It is the coolant filter Perkins Shop confirms for the 1300 Series, including the 1306 variants and the EP, IOPU and EDi families. It also surfaces in Cummins builds. Confirm by engine serial.
Is the 26550001 the same as the 26550002?
No. They are one digit apart and both coolant filters, but the 26550001 has a Perkins Shop 1300 Series listing and the 26550002 is distributor-referenced. Confirm the complete number.
What does the 26550001 cross to?
Candidate references include Donaldson P552075, Fleetguard WF2074, Baldwin BW5074, WIX 24197, UFI 29.009.00 and Cummins 3315114. Treat each as a candidate to check.
Is a coolant filter the same as a water filter?
Yes, in this Perkins family. Perkins Shop calls it a “water filter” and the trade calls it a coolant filter. They name the same spin-on element.
Does the 26550001 fit Cummins engines?
It surfaces in Cummins cross-application contexts through numbers such as Cummins 3315114 and Fleetguard WF2074. That is a candidate to check against the serial, not a fitment certificate.
Confirm the Number, Then Confirm the Build
Send engine model, serial number, the number off the filter you are replacing, and the coolant type or chemistry in use.