Airmar 175WR-4 Transducer Housing Wrench [175WR-4] Marine Hardware | Chocks The GMS 10 and the

The GMS 10 and the Garmin Marine Network are completely plug-and-play

With up to 3 times greater output than its predecessor and a sleek new look

Everything is fully submersible

and features a digital battery indicator on the head

Airmar 175WR-4 Transducer Housing Wrench [175WR-4] Marine Hardware | Chocks The GMS 10 and the175WR 4 Transducer Housing Wrench A single handed wrench that holds the main thru hull housing via the 'wrench flats' on the top of the housing to facilitate tightening of the hull nut. Use wrench 164WR 2 or 164WR 3 for the hull nut. For use with: B164 B175 SS164 SS264 IMPORTANT: the design of the housing for these transducers changed slightly in June 2012. This wrench is for the newer design and has an internal width of 2 3 4". If you need a wrench