Mercury 12-840383A2 Propeller Nut Kit, Heavy Duty ADDBOAT3 Bases install with two #10

Bases install with two #10 fasteners

This is a very unique feature to bilge pumps because it protects the pump and the vessel

External EPIRB pocket for quick access and activation

And because it s 100% free of grease-producing silicone oils and petroleum distillates

- Optional mounting hardware is available for mounting for on-board use

Mercury 12-840383A2 Propeller Nut Kit, Heavy Duty ADDBOAT3 Bases install with two #10Propeller nut kit 840383A2 is use on HD (Heavy Duty) 1. 25" prop shaft when installed on Mercury Sport Master, Torque Master I and II, Fleet Master and Verado 5. 25" diameter gear case. Also for use on MerCruiser Bravo I XR and XZ sterndrives, Sport Master and shorty Sport Master Bravo I XR Sport sterndrives. Torque the prop nut to 55 foot pounds (75 Nm). See your owner's manual for installation instructions, the Flo Torq hub, thrust washers and prop