Sierra Impeller - SIE-18-3087

Sierra 18-3087 Water Pump Impeller for MerCruiser, Mercury

For use on MerCruiser Bravo Sterndrives and Inboard engines with engine mounted sea water pumps (1999 & older).

Replaces:

Mercury

47-59362

47-59362T

Mallory

9-45375

9-45375-10

MerCruiser

47-59362

47-59362T1

47-593621

47-59362A1

EMP

47-03908

GLM

89740

Pro Marine

64362

Redline

RL3087

Frequently Asked Questions

• What is the Sierra 18-3087 Water Pump Impeller used for? The Sierra 18-3087 Water Pump Impeller is designed for use on MerCruiser Bravo Sterndrives and inboard engines with engine-mounted seawater pumps. The product description specifies applications for 1999 and older engines, so verify your engine and seawater pump configuration before purchasing.
• What MerCruiser applications does the Sierra 18-3087 Water Pump Impeller fit? The Sierra 18-3087 is specified for MerCruiser Bravo Sterndrives and inboard engines equipped with engine-mounted seawater pumps. Its listed application is for 1999 and older engines. Confirm that your MerCruiser setup matches these application requirements before selecting this impeller.
• What Mercury and MerCruiser part numbers does the Sierra 18-3087 replace? The Sierra 18-3087 replaces Mercury 47-59362 and 47-59362T, along with MerCruiser 47-59362, 47-59362T1, 47-593621, and 47-59362A1. These replacement numbers can be compared with the part number of the existing impeller when verifying the correct replacement.
• What aftermarket part numbers does the Sierra 18-3087 Water Pump Impeller replace? The Sierra 18-3087 replaces several aftermarket part numbers, including Mallory 9-45375 and 9-45375-10, EMP 47-03908, GLM 89740, Pro Marine 64362, and Redline RL3087. Verify the applicable part number for your specific MerCruiser application before ordering.
• Is the Sierra 18-3087 Water Pump Impeller for engines with engine-mounted seawater pumps? Yes. The Sierra 18-3087 is specifically described for MerCruiser Bravo Sterndrives and inboard engines with engine-mounted seawater pumps. The listed application is limited to 1999 and older engines, so confirm both the pump configuration and engine year before purchase.