Having a spare impeller makes good sense Running an outboard through silty or sandy water or accidently running your outboard dry can cause severe impeller damage almost instantly resulting in an overheated engine. Be prepared for these unexpected events by having a spare impeller. For 50 years Sierra have been engineering and manufacturing marine parts to meet or exceed manufacturers OEM specifications. These impellers are designed to replace those found on Johnson/Evinrude outboards and include a replacement key to make installation easy. Key Features Matches or exceeds Manufacturer specification Includes replacement key Having a spare keeps you on the water after an unexpected failure The Sierra Engine Parts Selector In addition to carb kits, we offer a wide variety of other engine parts manufactured by Sierra. To see if we have the part you need, see ourEngine Parts Selector, where you can search by engine make, serial number and model or year of manufacture.ApplicationOEM Part NumberGLM89570Johnson/Evinrude Outboard5001593, 389289, 391538, 395864, 397131, 435821, 439948, 435748, 394534Mallory9-45206