118mm / 4.65″ dia. x 1 1⁄4″-12

Donaldson’s 118mm x 1 1⁄4″-12 family of spin-on fuel assemblies features one head option and a range of filter lengths with various efficiency ratings to protect your fuel system and address today’s fuel challenges. Choose the media type and configuration that’s best for your application. Whether you are looking for high-efficiency particulate removal or fuel and water separation, the options are available for your needs.
For water maintenance flexibility, Donaldson fuel filter water separators have a connection that can accommodate multiple drain valve types, as well as a water collection bowl. The clear water collection bowl (80ml capacity) is a separate component that can be added on for easy, visual water inspection and maintenance. All fuel filter water separators ship with a standard Twist&Drain™ valve. A variety of other Twist&Drain valves types are available so you can configure the exact system needed.


On- and off-road applications


Easy to service, no special tools needed – removing and replacing spin-on filters is hassle free. By using field proven designs, Donaldson is able to offer robust, leak free performance while avoiding the need for specialised tools.

Mix and match system of in-stock heads and filters – create the system to fit your needs


Side mount, three port heads

7/8″-14 UNF-2B o-ring boss ports  per SAE J1936 (2x)

Spin-on filters

B20 compatible – a wide range of fuel compatibility, including biodiesel up to B20, allows for use with most modern fuel chemistries

Twist&Drain™ valves minimize components – provides flexible options that make routine maintenance clean, easy, and efficient

Add-on water collection bowl available for easy water inspection

Available Media Types

Treated cellulose


Donaldson’s exclusive Synteq™ synthetic

More Filtration

Air Filter
Bulk Fuel & Lube
Cabin Air

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