{"product_id":"donaldson-p550657-fuel-filter","title":"Donaldson P550657 Fuel Filter","description":"\u003ch2\u003eFuel Filtration for Heavy-Duty Applications\u003c\/h2\u003e\u003cp\u003eDonaldson P550657 is a cartridge-style fuel filter and water separator built for heavy-duty diesel fuel systems. It is specified for International WorkStar 7400, 4300, 4300LP, 7400, 7300, 4400, 4400LP, 7500, 8500, and CXT applications across the listed model years.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCartridge-style fuel filter with integrated water separation.\u003c\/li\u003e\n\u003cli\u003e99% efficiency rating at the stated test standard for fine contaminant control.\u003c\/li\u003e\n\u003cli\u003e95% emulsified water efficiency for fuel-system moisture management.\u003c\/li\u003e\n\u003cli\u003e5.5 collapse burst rating for structural strength under service conditions.\u003c\/li\u003e\n\u003cli\u003ePrimary application reference: Navistar 1842638C91.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThis Donaldson fuel filter, part number P550657, is designed as a cartridge water separator for diesel fuel delivery systems that require both particulate filtration and water removal. The listed dimensions and performance data include a 141.8 length, 3.74 outer diameter, 0.81 inner diameter, and efficiency testing to SAE J1488 and J1985. For buyers servicing International WorkStar 7400 and International 4300 platforms, P550657 provides a direct replacement option aligned with the specified application data.\u003c\/p\u003e\u003cp\u003eThis part cross-references Baldwin PF7779 and Hastings FF1159 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a clogged fuel filter element in diesel fuel systems.\u003c\/li\u003e\n\u003cli\u003eSeparating water from fuel before it reaches sensitive components.\u003c\/li\u003e\n\u003cli\u003eRestoring filtration performance when contamination levels rise.\u003c\/li\u003e\n\u003cli\u003eAddressing fuel restriction caused by a loaded cartridge.\u003c\/li\u003e\n\u003cli\u003eSupporting maintenance on International medium- and heavy-duty trucks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the application against the vehicle’s existing filter specification and the listed primary application reference before installation. Confirm cartridge dimensions and sealing surfaces match the housing, and follow the service procedure for fuel system priming after replacement. Use clean handling practices to avoid introducing debris into the fuel circuit.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDonaldson is a recognized filtration manufacturer with application-specific fuel filter engineering for commercial diesel systems. P550657 is built to the stated efficiency and structural performance standards, including SAE J1488 and J1985 test references.\u003c\/p\u003e","brand":"Donaldson","offers":[{"title":"Default Title","offer_id":53621555429557,"sku":"BBNQ-P550657","price":38.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/VF_P550657_Fro.jpg?v=1793166108","url":"https:\/\/www.partcatalog.com\/products\/donaldson-p550657-fuel-filter","provider":"PartCatalog","version":"1.0","type":"link"}