FUEL FILTER, WATER SEPARATOR SPIN ON

Name: P550729 - FUEL FILTER, WATER SEPARATOR SPIN ON
Brand: Donaldson
SKU: P550729
Price: 53.08 USD
Availability: InStock

This is a spin‑on fuel filter/water separator designed to remove solid particles and emulsified water from diesel fuel. It protects injectors, pumps and other fuel‑system components from wear and corrosion. Normally replaced during scheduled fuel‑filter services or whenever water‑in‑fuel warnings appear. Not suitable for marine applications.

$53.08

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Verified fitment

International/Navistar diesel engines that use OEM fuel‑filter/water‑separator part numbers 1677004C91 or 1618385C91 (thread 1‑14 UN)

Listed as a direct replacement for Navistar/International applications. Cross‑references to Freightliner DNP550729 indicate possible use on some Freightliner trucks, but primary verified application is Navistar. Do not use in marine environments.

Specifications

SKUP550729BrandDonaldsonSupplierKnox TrailersCategoryFiltrationAvailabilityIn StockTypeWater SeparatorStyleSpin-OnOuter Diameter4.36 in (110.7 mm)Thread Size1‑14 UNLength5.05 in (128.3 mm)Efficiency @ 50%5 micronEfficiency Test StandardSAE J1985Emulsified H2O Efficiency95%Collapse/Burst Pressure59 psi (4.1 bar)