Installing or replacing an outboard propeller on a boat with an outboard motor takes roughly an hour. Our kits include all the hardware needed to correctly install the propeller onto the engine's propeller shaft. Propeller hub, prop nut, cotter pin, and spacer, if required, are included in the package. WARNING: CA PROPOSITION 65 Applications (Suzuki): 2015 and newer DF 50AV 4-Stroke 2015 and newer DF 60AV 4-Stroke 2009 and newer DF 70A 4-Stroke 2009 and newer DF 80A 4-Stroke 2001 - 2008 DF 90 4-Stroke 2009 and newer DF 90A 4-Stroke 2009 and newer DF 100 4-Stroke 2001-2012 DF 115 4-Stroke 2013 and newer DF 115A 4-Stroke 2002-2012 DF 140 4-Stroke 2013 and newer DF 140A 4-Stroke Key features: Includes: Prop Nut, Flat Washer, Cotter Pin, and Rear Spacer Specifications: Brand: Michigan Wheel Manufacturer's Part Number: 990766