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Replacement for Baldwin B239 Spin-On Filter


Direct replacement for Baldwin B239 spin-on filter in form, fit, and function. Made in America with ISO 9001:2015 Certified manufacturing for assured quality. Optimized filter media inside the spin-on filter is used for fine filtration, long life, and high dirt-holding capacity.

  • 5.06″ OD x 10.94″ Length x 1-1/2″ UNF Thread
  • 10 Micron; B9.9 = 200, B12.4 = 1000
  • 261 Burst, 145 Collapse
  • Replaces Baldwin B239 spin-on filter in form, fit, and function. Scroll down for additional specs

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    SONA Part Number: S117539-0058075

    Part numbers and names are used for cross reference only. Part numbers indicated as replacements are not manufactured or affiliated with the OEM or Brand listed.



    I.D. Top

    1-1/2" UNF

    I.D. Bottom


    Length Overall


    Construction Type

    40 GPM, Microglass


    10 Micron; B9.9 = 200, B12.4 = 1000

    Gasket Material


    Wire Support


    Max Operating Pressure

    145 Collapse, 261 Burst

    Max Temp

    248 Degress F

    Weight Each


    Carton Qty




    SONA Baldwin B239 Replacement Spin-On Filter

    Our Baldwin B239 replacement spin-on filter is a guaranteed direct replacement in form, fit, and function. This means the filter will fit and you should expect performance to be equal to or greater than the OEM filter. Made in America.

    Filtration Media for the Baldwin B239 direct interchange

    Our filter media is backed by ISO 16889 multi-pass testing and other ISO/SAE test protocols and the filter is produced in an ISO Certified manufacturing facility. An ISO Certified manufacturing facility is all about quality control, consistency, responsibility, and being true to the design. Optimized media is used for fine filtration, just like the Baldwin B239 spin-on hydraulic filter to be replaced. Our spin-on filters use the optimal amount of media and pleats to ensure high dirt-holding capacity. The correct number and design of pleats in the element will give you the lowest initial pressure drop. Therefore the filter will take longer to reach its change-out pressure drop which is usually 25 PSID.

    Micron Rating for the Baldwin B239 cross

    This Baldwin B239 spin-on filter replacement element is beta-rated. The filter performance is outstanding. The Beta X = 1000 number means that for every 1000 particles of x size in the fluid only one particle will pass through the filter on average.

    • 10 Micron; B9.9 = 200, B12.4 = 1000

    Filter Burst Pressure for the Baldwin B239 cross reference

    A filter burst pressure of 261 Burst, 145 Collapse means that if the filter is completely clogged and the build up of pressure reaches or surpasses 261 Burst, 145 Collapse the filter may burst at the gasket or allow contamination downstream. Please use a satisfactory safety factor for the filter.

    Compatible Fluids

    This filter is compatible with the following fluids but pressure drop will vary depending on viscosity and temperature:

    • Hydraulic Fluid and Machining Fluids
    • Diesel and other fuels
    • Lubricating Oils and Synthetic Lubricants
    • Turbine and Compressor Lube Oils … And many more fluids

    Visit the links below for more helpful information.

    Our hydraulic filter is indicated as a replacement for Baldwin B239 and is not manufactured by or affiliated with the OEM or Brand listed. Part numbers and names are used for cross reference only. The element may vary from the image displayed on the left.

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    Terms and Conditions

    Common Filter Test Methods and Terminology

    Beta Ratios and Filter Efficiency Explained

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