Fish Hawk X4 Probe

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The X4 Probe gathers trolling speed and water temperature from the depths and uses a sonar signal to send that data back to the boat. Replacement probe for X2 and X4 System. Backwards compatible with Model 840.

  • Wireless sonar data transmission
  • Ultra-long battery life (4 AA batteries not included)
  • Detects speed changes of 1/10 MPH
  • Water activated auto on/off
  • Leak-proof double o-ring design
  • Includes breakaway double snap swivel and probe bumper
  • Made in U.S.A.
One Year
Outside USA:
Duties & taxes due upon delivery


  • 5
    Fish Hawk X4 Probe

    Posted by Wes Scott on 28th Aug 2022

    Worked perfect right out of the box with my 20 year old 840 display and transducer setup

  • 5
    Fish Hawk X4 Probe

    Posted by Scott Eisner on 18th Aug 2022

    My son and I have been fishing salmon on Lake Michigan for years. We thought we were doing pretty well. Several years ago I installed the Fish Hawk X4 and it took us to the next level. Knowing the water current direction, speed and temp down deep makes a huge difference. No more guessing and if I had the choice between a fish finder and the Fish Hawk, I'd choose the Fish Hawk hands down.

  • 5
    Fish hawk

    Posted by wendell buhr on 29th Jul 2022

    Excellent product wouldn't be with out it

  • 5
    X 4 probe

    Posted by Bob Lewis on 25th Jul 2022

    I was blown away by the support staff and customer service. The follow up was second to none. Thanks for being so prompt and helpful. I would rather fish without a fish finder than my Fish Hawk.

  • 5

    Posted by Gary Cuperus on 22nd Jul 2022

    I enjoy the quality of people working at Fish Hawk. They are excellent to work with.

  • 5
    Replacement probe

    Posted by Matthew S LaDousa on 19th Jul 2022

    I fish pretty hard and as long as there's no ice I'll keep taking the boat out. I had my probe for years and she finally gave up the ghost. The staff at fish hawk got me setup with a replacement in a minimal amount of time. It works great and helped us out an 18lb king in the box on its maiden voyage. Thanks Fish Hawk!

  • 5

    Posted by Bill on 18th Jun 2022

    The probe is excellent! Only design flaw is the battery connector. When reconnecting the battery pack it’s easy to misalign the connector. The 3 connector plug should be made fool proof so you can’t inadvertently fry the sending unit. When changing batteries while the boat is rocking it’s easy to do this with big fingers in a small battery compartment. Tanya’s excellent customer service helped us out and we had our unit back with no delays. Thank you!

  • 5
    Fish Hawk Customer service

    Posted by Terry Armstrong on 13th Jun 2022

    The Fish Hawk team is top notch in customer service and support. Whenever we have an issue they are always helpful and get the issues resolved immediately. We are customers for life. Thanks for making fishing a little easier.

  • 5
    Fish Hawk X4 Probe

    Posted by Bill Bishop on 26th May 2022

    Lost my X4 probe in a commercial net on Lake Michigan. Ordered the replacement and received it in just a few days. Took it out to the Lake and it worked perfectly just like it should. Great service and the Fishhawk is a requirement on the big lake!