Perkins 26561117 Secondary Fuel Filter Element
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The Perkins 26561117 Secondary Fuel Filter Element is a genuine-style cartridge fuel filter designed for compatible Perkins diesel engines used in marine, agricultural, industrial, generator, and equipment applications. It helps protect the fuel injection pump and downstream fuel-system components by filtering fine abrasive contaminants from diesel fuel before they can reach precision injection parts.
Perkins part number 26561117 has been superseded by 4326658, which should be used as the updated OE reference when confirming current availability.
Key Features
- Perkins secondary fuel filter element.
- Original part number: 26561117.
- Superseded / updated OE reference: 4326658.
- Cartridge-style fuel filter element.
- Designed for compatible Perkins diesel fuel systems.
- Filtration reference: 14 micron at 99% efficiency.
- Helps protect fuel injection pumps and injectors from fine abrasive contamination.
- High-capacity pleated cellulose media.
- Supplied with sealing O-rings where packaged as a service kit.
- Commonly used in older Perkins, agricultural, marine, generator, and industrial diesel applications.
Technical Specifications
- Filter type: cartridge secondary fuel filter element
- Filtration rating: 14 micron reference
- Efficiency reference: 99%
- Outer diameter: 3.44 in. / 87.5 mm
- Overall length: 2.80 in. / 71.2 mm
- Media type: pleated cellulose paper
- Included seals: typically supplied with 3 rubber sealing O-rings
- Fuel type: diesel
Engine Compatibility
Common application context includes compatible Perkins diesel engines and equipment that specify 26561117, 4326658, or a verified equivalent, including:
- Perkins 1004-4 engines.
- Perkins 1004G engines.
- Perkins D3.152 engines.
- Perkins 403C engines.
- Perkins 4.203 engines.
- Perkins 4.230 engines.
- Perkins 4.2032 engines.
- Compatible marine diesel, tractor, generator, and industrial power applications where listed.
This filter is also commonly associated with multi-brand equipment using Perkins-based diesel platforms, including select Massey Ferguson, AGCO, Case, New Holland, International Harvester, and John Deere applications where the parts lookup confirms this element.
Serial Number Fitment Notice
Confirm fitment by engine model, serial number, fuel filter housing style, existing filter number, and parts manual before ordering. Cartridge fuel filters can look similar but differ in diameter, length, sealing layout, O-ring placement, and fuel-system application.
Use the updated Perkins reference 4326658 when checking current OE availability, and compare against the filter being removed when servicing older equipment.
When This Part Needs Replacement
Replace the fuel filter element at the engine manufacturer's recommended service interval, during seasonal diesel service, after contaminated fuel exposure, after storage, or when the engine shows fuel restriction symptoms such as hard starting, rough running, hesitation, smoke, power loss, or stalling under load.
Replacement is also recommended if the filter element is dirty, water-contaminated, swollen, damaged, or if the sealing O-rings are hardened, flattened, cracked, or leaking.
Installation Notes
Shut the engine down safely and close the fuel supply if equipped. Clean the outside of the filter housing before opening it to prevent dirt from entering the fuel system. Remove the old element and all old sealing O-rings, then clean the housing and sealing surfaces.
Install the new filter element with the supplied O-rings in the correct positions. Reassemble the housing according to the Perkins service procedure, then prime and bleed the fuel system to remove trapped air before starting. After startup, inspect carefully for leaks and confirm stable engine operation.
Alternate / Cross-Reference Part Numbers
- Perkins 26561117 — original part number
- Perkins 4326658 — superseded / updated OE reference
- Fleetguard FF167 — cross-reference reference; verify by application
- Baldwin BF825 — cross-reference reference; verify by application
- Donaldson P556245 — cross-reference reference; verify by application
- Donaldson P502420 — cross-reference reference; verify by application
- Wix 33166 — cross-reference reference; verify by application
- Fram C1191A — cross-reference reference; verify by application
Parts Desk Insight
This is a cartridge-style secondary fuel filter, so the sealing O-rings are just as important as the element itself. Reusing old O-rings can cause air leaks, hard starting, fuel seepage, or loss of prime. After installation, always bleed the system properly before running the engine under load.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.