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SM501180A Side-Power Aluminum Anode
$43.16  

SM501180A Side-Power Aluminum Anode
(SM501180)

Mil-Spec A-24779 (SH) Aluminum Alloy
Diameter:  2.8"
Height:  2.0"
Weight:  0.93 lbs

  • Fits models SH420, SH550, SP550HYD.
  • 386mm Tunnel Thrusters.
  • Mounting screw included.  Hex wrench required for installation.

  SM501180A Side-Power Aluminum Anode SM501180A Side-Power Aluminum Anode

Starting June 2010, Imtra is fitting Side-Power thrusters with Mil-Spec Aluminum anodes to provide improved corrosion protection.  Compared to zinc anodes, aluminum anodes provide superior protection in brackish and freshwater, while still providing excellent protection in salt water.  For more information on Imtra’s conversion to aluminum anodes, go to http://www.boatzincs.com/imtra.pdf.

Q:  I was under the impression that one was not to mix aluminum and zinc anodes on a boat.  If aluminum is only available for my Imtra thruster should I switch the others to aluminum?

A:  Imtra Side-Power thrusters are engineered to have their underwater metals electrically isolated from the rest of the boat.  This means that there is no electrical path available for the thruster (or its anodes) to interact with any other underwater metals (or anodes) either on or adjacent to your boat.  You can, and should, continue to use zinc anodes elsewhere on your boat while upgrading your Imtra Side-Power thruster to these new, technically superior aluminum anodes.

Side Power 75T Twin Blade Thruster
SP75T Twin Propeller Thruster
Part Number Variations: Imtra, Side-Power, SidePower, Side Power, SM501180, SM501180A, SM501180A, SM-501180, 501180, SM-501180A, SM5-01180A, 501180A, 01053, 01053AL