Sierra 18-3420 Water Pump Base Merc

Sierra 18-3420 is listed in our inventory as Water Pump Base Merc. Use the exact manufacturer part number 18-3420 and Laken SKU 90205 to confirm this is the correct part before ordering.

Sierra 18-3420 Water Pump Base Merc is listed in the Laken Water Sports marine parts catalog for online ordering and Phoenix-area pickup. Confirm fitment, availability, and pickup timing with the parts team before ordering when compatibility is critical.

Fitment notes: Confirm manufacturer part number 18-3420, dimensions, and application compatibility before ordering.