Airmar: replacement kit for S850 and ST850 sensors. Includes paddlewheel, shaft, 4 O-rings, and valve sleeve. Not for Raymarine ST600 or ST800 models. Read more.
Thru-hull spares kit for S850 and ST850 sensors. Note: Not compatible with Raymarine ST600 or ST800. The ST850 model uses a secondary screw-down cap. The kit includes 1 paddlewheel and shaft, 4 O-rings, and 1 valve sleeve.
