Moderate — 2–4 hours
Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | SI-TEX |
| Part Number | S0BQ BT87M1KW-18 |
Videos
How to Choose the Best Transducer for Your Boat
What is CHIRP Sonar? | Humminbird
Simrad | High-and-Low Chirp explained
Install transducer, fish finder (dos and don’ts)
Tutorial – How to Install a Garmin Transom Transducer
Airmar’s New Medium Ultra-Wide Chirp Transducers
AIRMAR B175L BRONZE - Overview and Install
Transducer Frequencies Explained
How To Install In-Hull Transducer
Transducer set up for the 3-1
Thru-Hull Transducer Basics from The GPS Store, Inc.
Learn more about our Raymarine Thru-hull transducer installation on a jet-ski.
Flush Mount Thru-Hull Transducer Basics
Should I Use an in-Hull, Thru-Hull or Transom Mount Transducer With My New Chartplotter?
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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