18-3206 Water Pump Housing for OMC Sterndrive/Cobra Stern Drives
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Restore water pump function with a new housing.
OMC sterndrive water pump housings can wear over time resulting in reduced water flow and pressure. Replacing the pump housing (and impeller) can restore a proper supply of cooling water and reduce the chances of overheating the engine. Sierra replacement housings are engineered to meet the OMC specifications for water pumps used on many sterndrives manufactured between 1989—1993. The plastic body features brass bushings in each fastener point to prevent over-tightening and a channel for the seal. To refresh an older water pump, look to Sierra for the required parts.
Key Features
- Engineered to meet OEM specifications
- Restores cooling water flow (with new impeller Sierra p/n 18-3086)
- Reduces chances of engine overheating
- Backed by SeaStar Solutions Limited Two-Year Warranty
18-3206 Application Guide
| Application | OEM Part Number |
|---|---|
| GLM | 12405 |
| Johnson/Evinrude Outboard | 984744 |
| Mallory | 9-43200 |
| OMC Sterndrive | 984744 |
The Sierra Engine Parts Selector
In addition to water pump housings, 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.
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