Various outboard, inboard, and sterndrive engines are compatible with Sierra impellers. Sierra impellers are produced in a facility that has received ISO 9001 certification and has an OEM certification. They manufacture sophisticated, well-functioning machinery types. For each size and application, different compositions and balances are used.
IMPELLER - 18-3017 is a rotating mechanical part with blades. Allowing mechanical energy to transform into pumping energy diverts the flow of water or other fluids. Accelerating the fluid radially outwards from the center of rotation transfers power from the pump motor driving to the liquid pumped.
Features:
All #1, R, MR, and Alpha units through S/N D494568 are compatible. Sierra
Interchangeable with:
Specification:
Uses: a brass insert, Fits: MCM & outboard applications
We can ship to virtually any address in the US. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.)
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.
Sea Star Solutions
This Mercury Impeller fits MCM and Outboard applications and is a component of the engine's cooling system. A damaged impeller can lead to low flow in pumps. The common causes of impeller failure are...
Sea Star Solutions
Mercury Impeller is a high-quality impeller that is built to OEM standards. The rubber vanes are flexible, and the boat hub rotates on an eccentric within the stainless steel-lined pump housing. The...
Sea Star Solutions
Impellers are used to power an engine's cooling system. Running a pump dry or through silty or sandy water will soon destroy an impeller and cause the motor to overheat. The impeller must be checked...
Sea Star Solutions
It is always a good idea to keep a spare impeller on board when venturing into open waters in case of a sudden failure. Because impellers are such a vital part of the cooling system on a boat, a worn...
Sea Star Solutions
Impeller - Sierra Marine Engine Parts (18-3042) is carefully built from premium materials, high-quality at an affordable price, and designed to meet stringent quality requirements. The impeller is an...
