18-3217D Mercury/Mariner 75hp to 255hp w/small impeller

Replace the impeller on a wide range of Mercury outboards

For 50 years Sierra has been producing parts engineered to meet or exceed the specifications of marine engine manufacturers and has gained the confidence of engine manufacturers and boat builders to a point of supplying them with OEM parts. Boaters and technicians can be assured a Sierra part will fit right the first time and restore function to OEM specifications.

Sierra impellor kits make changing out an old or failed impellor easy. Each kit was packaged to provide simple out of the box installation and includes an impeller, the required gaskets, O-rings and a wear plate. This kit is compatible with a wide range of Mercury outboards; don’t be alarmed if there are more parts in the package than your application needs. These kits are ideal for mobile repair technicians who service a variety of engines, but have limited space for parts.

Key Features

• Kits includes parts compatible with several Mercury outboards
• Ideal for mobile technicians or fleet managers with different sized Mercury outboards
• Meets or exceed OEM specifications
• Kit includes impeller, wear plate and required O-rings

The Sierra Engine Parts Selector

In addition to impeller kits, we offer a wide variety of other engine parts manufactured by Sierra. To see if we have the part you need, see our Engine Parts Selector, where you can search by engine make, serial number and model or year of manufacture.