Sonihull Stern Drive Adaptor

Stern Drive & SailDrive Adaptor

Stern drives have always been problematic in terms of fouling. Due to the many different metals they are composed of, their moving parts and soft bellows, conventional copper impregnated antifouling paints are not an option.

Sonihull coupled with the Stern Drive & SailDrive Adaptor offers great protection to this important part of the boat that is prone to fouling. Results show an impressive average of 80% reduction in fouling.

The device enables a Sonihull transducer to be simply screwed in, so that ultrasonic signals can be directly injected into the stern drive. The Stern Drive & SailDrive Adaptor mounts via the 16-18mm bolt found in the fixed end of the stern drive leg steering ram.

The Benefits of the Sonihull Stern Drive & SailDrive Adaptor

  • Cleaner propellers enable the boat can get on the plain quicker.
  • Faster Acceleration.
  • Massive saving in fuel economy.
  • Greater protection of rubber gators and boots. (Without protection hard growth forms and cuts into the soft parts when steering or tilting)
  • Additional protection for engine cooling system. (Most stern legs incorporate the engine cooling pick up tube,any growth inside this tube will reduce the flow of water, leading to potential over heating and engine damage)
  • Smoother ride under power.


Here's what's included with the Sonihull Stern Drive & SailDrive Adaptor

  • 1 adaptor

Related Items

There are many related items for the Sonihull Stern Drive & SailDrive Adaptor to fully protect your vessel from fouling.

Sonihull Mono

Sonihull Mono

Single transducer system

Sonihull Duo

Sonihull Duo

Dual transducer system

Extension Cable

Extension Cable

16.4 feet (5 meter) cable


Pipe Adaptor

Protection for 2" - 10" piping