The 4 Ohm rating will perform the listen feature for any hailer that supports this capability

JIS8 Submersible - Meets rigid JIS8 submersible standards (5' 30 min

Measures 17" L x 14-1/2" W

One (1) EMT Shears - 4"

or leakage through the seal

Vetus MGS5455A - Plastic muffler MGS 127mm 45deg inlet, 127 mm out Adaptor The 4 Ohm rating willMG waterlocks are designed for modern high performance boats with one or two large engines which leave little space to spare in the engine room. The outlet connection at the top can rotate through 360 and the inlet connection is at an angle of 45upwards. Type MG waterlocks can only be installed in water injected exhaust systems. The body is entirely constructed from synthetic materials and is therefore not susceptible to corrosion or galvanic action.