Excavator Filters
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Secondary spin-on fuel filter identified by P550959. Published engine-liquid records list Ford and GMC 25011026 as the primary application. Exact-number specifications give 118 mm outer diameter, 1 1/16-16 UN thread, 227 mm length and 99% efficiency at 16 micron. Published references also include Detroit Diesel 23518532 and 25011026. Confirm the complete number, thread, gasket, filtration grade and engine serial range before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Manufacturer Part Number | Secondary fuel-filter number | P550959 |
| Equipment Manufacturer Part Number | Published Ford/GMC primary application | 25011026 |
| Published Equipment Cross-Reference | Verify engine and serial range | Detroit Diesel 23518532 / 25011026 |
| Published Aftermarket Comparison | Verify thread and filtration grade | FF5037 / BF785 / P3805 / 33959 |
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
3 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Recorded compatible model references include Published primary application: Ford / GMC 25011026, Published engine family: Detroit Diesel, Fitment limitation: Confirm P550959 / 25011026, 1 1/16-16 UN thread, 118 x 227 mm body, gasket, filtration grade and engine serial range. Confirm the complete part number and machine serial range before ordering.
Manufacturer number: 25011026.
Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.
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