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Donaldson · Filtration
P550440
In stock · ships from Knoxville
This Donaldson P550440 is a spin-on secondary fuel filter for heavy-duty diesel engines.
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Verified fitment for 4 applications
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All confirmed applications for this part number.
Caterpillar
Other applications
Caterpillar
Other applications
May fit other diesel engines and equipment that use this secondary fuel filter; verify with manufacturer.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 15 of 15.
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It uses cellulose media to trap particles down to 16 microns at 99% efficiency, protecting fuel injectors and other engine components from contamination. It’s typically replaced as part of regular fuel system maintenance or when the filter becomes clogged, with a thread size of M16 x 1.5 and a stand pipe for secure mounting.
Part Number: P550440
FUEL FILTER, SPIN-ON SECONDARY
Category: Donaldson- F
Dealer: KP Services Crossville
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