Please note that this particular unit is being sold without a warranty, and the manufacturer part number is 10-18-014. It's essential to verify the compatibility with your system before making a final purchase. This unit came out of a freshwater vessel, back in 2012 and has been sitting on the shelf ever since. It would be proper to have checked out and possibly rebuilt as it is being sold "As Is" Drive spins freely but there was slipping which is why it was pulled and replaced. Feel free to message me with any questions