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Add to CartSierra replacement water pump impeller for Mercury and MerCruiser engines. This impeller fits MCM and outboard applications. All Sierra engine parts are manufactured to meet or exceed OEM requirements.
Features:
Interchangeable with:
What is the Sierra 18-3017 Water Pump Impeller for Mercury used for?
The Sierra 18-3017 is a replacement water pump impeller for Mercury and MerCruiser engines. It is specified for MCM and outboard applications and is manufactured to meet or exceed OEM requirements. The impeller uses a brass insert and is listed for specific MerCruiser drive and raw water pump applications.
Which MerCruiser drives does the Sierra 18-3017 water pump impeller fit?
The Sierra 18-3017 is specified for all #1, R, MR, and Alpha units through serial number D494568. It is also listed for the raw water pump on 190 IB units with serial numbers 1564539 through 1720903 and 225 IB units with serial numbers 1539620 through 2278646.
Can the Sierra 18-3017 impeller be used for Mercury outboard applications?
Yes. The product description states that the Sierra 18-3017 fits MCM and outboard applications. However, it does not provide specific outboard horsepower, model years, or serial-number ranges, so verify your particular Mercury outboard application before selecting this replacement impeller.
What is the Sierra 18-3017 water pump impeller made with?
The Sierra 18-3017 Water Pump Impeller uses a brass insert. It is a Sierra replacement engine part for Mercury and MerCruiser applications and is manufactured to meet or exceed OEM requirements. The supplied description does not specify additional impeller materials or dimensions.
What part numbers are interchangeable with the Sierra 18-3017 water pump impeller?
The Sierra 18-3017 is listed as interchangeable with multiple part numbers, including MerCruiser Stern Drive 47-89984T3, 47-89984T4, 47-30221, and 47-65960, Mallory 9-45306, Mercury Marine 47-89984T4 and 47-30221, GLM 89840, Pro Marine 89984, and Redline RL3017. Additional Chrysler/Force/US Marine and EMP numbers are also listed.
Which Mercury and MerCruiser applications should be verified before using the Sierra 18-3017?
Before selecting the Sierra 18-3017, verify your drive or engine application against the supplied fitment information. The listed applications include #1, R, MR, and Alpha units through serial number D494568, plus specific 190 IB and 225 IB raw water pump serial-number ranges. The description also identifies MCM and outboard applications.
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
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