Airmar 175WR-4 Transducer Housing Wrench [175WR-4]

The Airmar 175WR-4 is a handy single-handed wrench. It's designed to hold the main thru-hull housing through the 'wrench flats' on the housing top, making it easy to tighten the hull nut. For the hull nut, you can use wrench 164WR-2 or 164WR-3. This wrench is suitable for B164, B175, SS164, and SS264 transducers. Note that in June 2012, the housing design of these transducers changed a bit. This 175WR-4 wrench is for the newer design with an internal width of 2-3/4'. If you need a wrench for the older designs, choose the 164WR-4 with an internal width of 2-7/16'. It belongs to the tool category, comes in a box sized 1'H x 5'W x 10'L, and weighs 0.6 lbs.

Using the Airmar 175WR-4 wrench is easy. Just place it on the 'wrench flats' on the top of the main thru - hull housing. Then, you can tighten the hull nut with one hand. Remember, for the hull nut, you can use the 164WR - 2 or 164WR - 3 wrench. Since the housing design of related transducers changed in June 2012, make sure you're using the right wrench according to the design of your transducer. If it's the newer design, use this 175WR - 4. For older designs, pick the 164WR - 4. As for maintenance, keep it clean and dry. Wipe it down after use to prevent rusting. Store it in a safe place to avoid any damage.