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Donaldson 07.5-09 Dodge 6.7L Cummins FS-2 Filter Element P550908



Fuel Filter Water Separators Product Attributes
Outer Diameter:  3.54 Inches (90 MM)
Length:  6.22 Inches (158 MM)
Gasket OD:  None
Gasket ID:  None
Efficiency 99%:  5 Micron
Efficiency Test Std:  SAE J1985
Emulsified H2O Efficiency:  95 Percent
Primary Application:  SERVICE CARTRIDGE FOR P550907
Price Type:  F
Related Part:  P550907

Donaldson Part Number: P550908

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From Fleetguard Fleetguard

'07.5-'09 6.7L Fleetguard FS43258 Replacement Fuel Filter Element Only

2007.5-2010 6.7L Fleetguard FS2

Cummins Filtration has released a new high performance Fleetguard® FS2: Filter-in-Filter technology for the Dodge Ram trucks withthe 6.7L Cummins turbo diesel engines. The new FS43257 filter assembly is an upgrade for the ’07 – ’09 Dodge Ram which provides the filtration performance of two filters in a single, reusable filter canister.

The FS2: Filter-in-Filter Fuel System Protection product provides optimally designed filter media in a unique construction to achieve:

• Unmatched free and emulsified fuel/water separation – Ensuring greater protection from water-related corrosion for modern high pressure fuel systems.

• 2-stage particle removal - 5* micron filtration rating - for exceptional fuel system protection without the hassle of extra filters and fuel plumbing arrangements.

• Customer-requested optimal fuel system protection in a design that allows reuse of the filter canister and replacement of only the filter cartridge at service time.

Cummins and Chrysler began applying this high-performance filter to all new engines and trucks effective January 2009. All owners of 2007 – 2009 Dodge Ram trucks with a 6.7L Cummins turbo diesel engine can use the new filter without the need for additional plumbing or hardware.

The FS43257 Filter-in-Filter is a direct fit replacement for the original FS43252 single-stage filter.

To minimize the waste stream associated with fuel filter changes, only the internal filter cartridge and canister O-ring (kit part# FS43258) must be changed during service - the tough composite filter canister plus the water-in-fuel (WIF) sensor and the filter drain valve can be reused over and over.**

Application and Part Number Cross Reference: 2007 – 2009 Dodge Ram® 2500, 3500, 4500 and 5500 vehicles with the 6.7L Cummins® turbo diesel engine.

Fleetguard Cummins® Mopar
Obsolete Filter Assembly FS43252 4936025 05183410AA
New Filter Assembly FS43257 5257769 68061633AA
New Filter Cartridge Kit FS43258 5257768 68061634AA

*98.7% efficiency

**Follow instructions with each filter. Be sure to thoroughly lubricate and use the new O-ring that comes with each filter kit.


Max Load: 18 grams of particulate
Max Flow: 67.26 gph
Filtration: 5 microns @ 98.7% efficient


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