Drop-In Interchangeable Hub Propellers

You came after a boat spin and noticed an out-of-control tachometer. It sounds like the propeller’s hub insert has slipped. The hub is an essential piece on your boat prop designed to break if something hits the propeller. It’s a great safety feature to...

Worn-out or nicked thrust washers can cause damage to the propeller shaft and blade face. When repairing or checking your propeller, you should replace the thrust washer to protect your drive system. This 991247 forward thrust washer is designed for use...

The Michigan Wheel aft castle was designed exclusively for Mercury Mercruiser V6 outboards. The Michigan Wheel Aft Castle Washer supports the steering post structurally, eliminating sag and improving boat control. This unit's huge footpad surface...

If you don't have one, your propeller may be slipping. It only aids in preventing cavitation and, in the worst-case scenario, complete blow-out of a thru-hub exhaust system by keeping the exhaust gases in the slipstream (the water flow between the bottom...

The diffuser ring keeps exhaust gases from re-entering the blades at low speeds. If you don't have one, your propeller may be slipping. Only on a thru-hub exhaust system do they aid to keep the exhaust gases in the slipstream (the flow of water between...

The V4 Vortex Gearcase Adapter Ring - 3-Blade (991216) is a circular accessory with the unique feature of having threads with two different diameters on both sides of the filter. It is for vortex propellers. It is suitable for 20-30 HP applications. Prop...