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Perkins Coolant Filters
A Perkins coolant filter filters engine coolant and, in some specifications, releases a supplemental coolant additive (SCA) corrosion inhibitor. It is a build-level fitting: the canister must match both the engine build and the coolant chemistry. Common errors are ordering by engine series, treating a water filter as a fuel/water separator, fitting an SCA canister to an ELC system, or substituting on thread size. This page covers coolant filters for Perkins-powered generator sets, plant, marine and fleet equipment. Confirm the build and coolant before ordering.
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Perkins Coolant Filters
Browse Perkins coolant filter numbers for generator, plant, tractor and marine engines. Confirm the engine serial or build and the complete number on the old filter before ordering.
What This Page Covers, and What It Does Not
This page covers coolant and water filters for Perkins-powered equipment. The Perkins filter range covers the brand, and Perkins oil filters covers the lube circuit.
Coolant & Water Filters on This Page
- Spin-on coolant canisters
- Water filters (same canister)
- SCA-charged canisters
- Non-SCA canisters
- Genuine original items
- Declared alternatives
Outside This Page
Lube oil, fuel, air, crankcase, aftertreatment and complete filter kits sit on their own pages. They use different numbers and different checks.
This is not a stock list, price list or fitment certificate. It is a way to check a canister before it ships.
Check the Canister
Before It Ships
Before It Ships
With the engine build, the old canister number and the coolant type, request a quote. We confirm the complete number and the delivery terms line by line.
Why the Coolant Type Changes the Perkins Coolant Filter
A Perkins coolant filter does two jobs. It filters particles from the coolant, and in some specifications the canister carries an SCA charge that releases a corrosion inhibitor. That job ties the part number to the coolant chemistry, not just the thread.
| Coolant in the System | Canister Decision | First Thing to Confirm |
|---|---|---|
| Conventional heavy-duty coolant, SCA maintained | An SCA-charged canister may be specified. Fit only the number released for the engine build. | Engine serial or build; old canister number; SCA test result |
| Perkins ELC | Perkins rule: do not fit an SCA-charged canister. Remove an SCA filter when a system is switched to ELC. | Coolant record; whether the filter head remains in circuit |
| Unknown, mixed or recently changed | Identify the coolant before ordering. | Coolant type and concentration; service history |
If the coolant type is unknown, stop. A canister that suits a conventional system can be wrong for ELC even when it threads on. Coolant canisters also appear in some Perkins filter kits; check the contents against the same rule.
Genuine Canister or Alternative: Declare the Requirement
The additive charge is part of the part. Genuine original and alternative are different offers — state your requirement before quoting. We don’t claim authorized-dealer status for Perkins or any brand.
Genuine Original
The Additive Charge Is Part of the Part
The 1300 Series EDi handbook instructs the genuine canister, which contains the corrosion inhibitor. It is the reference the alternative is measured against.
- Complete Perkins number, with suffix
- Corrosion inhibitor charge, as supplied
- Seals and packaging, as delivered by the maker
- Traceable supply route from the source
Declared Alternative
The Charge Must Be Declared
An alternative must declare its additive charge. Without that statement, the offer is incomplete, and the coolant chemistry cannot be matched with confidence.
- Complete alternative number, with suffix
- Additive statement in writing
- Seals and construction points, declared
- Traceable supply route from the seller
01Complete number
02Additive statement
03Seals and packaging
04Traceable route
Counterfeit canisters circulate. Dimensions and price do not show whether an alternative matches the system. Buy through a traceable route and check the complete number, the additive statement and the packaging against the quoted list. The verification process explains our check.
Read the Records Before You Order a Perkins Coolant Filter
The old canister and engine plate carry the records that decide the order.
Six Records to Read First
Canister number
Read the complete number, including any suffix, from the old canister — not from a catalogue entry that may have been superseded.
Engine identification
Engine model and full serial or build number from the engine plate.
Coolant type
Perkins ELC, conventional heavy-duty, or unknown. The coolant chemistry decides whether an SCA-charged canister is acceptable.
SCA test result and date
If the system runs conventional coolant, record the SCA test result and the date it was taken.
Filter-head type and position
Note the filter-head type and installed position, including any remote head arrangement.
Photographs
Photograph the canister label and the engine plate. A matching thread, diameter or height does not confirm the additive charge or the right canister for the coolant.
How a Perkins Coolant Filter List Is Quoted
A coolant filter list is checked against the engine record, the coolant specification and the installed position — not against a catalogue headline. Each line is stated or marked, never guessed.
You Send the Records
Engine model, full build, old canister number or photographs, coolant type and quantity. Without the build and coolant type, the check starts from the wrong place.
Send build and coolantThe coolant type is part of the filter specification, not background detail.
We Check Each Line
Every line is verified against the parts record, the coolant specification and the installed position — not against a catalogue headline. A canister that threads on is still a candidate until it is confirmed.
Check the positionInstalled role and coolant chemistry, not just the thread.
We State Everything in Writing
The offered canister, its status, the complete number, the quantity and the delivery terms — each line stated, not implied.
Nothing left implicitStatus and complete number appear in the quotation.
Unconfirmed Is Marked, Never Guessed
Anything that cannot be confirmed against the record is flagged, not filled in with a plausible number. A marked line is information; a guessed line is a liability.
No guessed numbersA flag is better than a wrong number in the quotation.
Line by Line, Not From a Stock Feed
Multi-engine lists are quoted item by item. No real-time inventory feed is published; availability and delivery terms are confirmed in the quotation itself.
Confirmed in the offerAvailability is a quotation statement, not a website figure.
Frequently Asked Questions
What Perkins coolant filter fits my engine?
It depends on the engine serial or build and the coolant. Not every Perkins engine has one. Confirm the old canister number against the parts record.
Is a Perkins water filter the same as a coolant filter?
Yes. Perkins lists 26550001 as a Water Filter, and sellers use both names for the same canister. It is not a fuel water separator.
Can I use an SCA filter with Perkins ELC?
No. Perkins states that ELC must not be used with SCA filters and that an SCA filter should be removed when switching to ELC. Confirm it in your manual.
Are 26550001 and 26550002 interchangeable?
They are separate Perkins numbers. Catalogues often list them together, but the cross-reference lists do not agree. Confirm the old canister number and the parts record; do not substitute on appearance.
How often should a Perkins coolant filter be changed?
Renew it with the coolant at the interval for your engine serial and duty cycle. Conventional systems also need SCA testing. Confirm the schedule in your manual.
Request a Perkins Coolant Filter Quote
A Perkins coolant filter is a build-level fitting, and the coolant chemistry decides the canister. Send the engine model, full build, old canister number, coolant type and label photo. We will confirm the offered canister, its complete number and the delivery terms.
Request a Perkins Coolant Filter Quote →