Sierra 18-3494 Water Pump Kit for OMC Stern Drive & Outboard Engines

The Sierra 18-3494 Water Pump Kit is a complete replacement water pump repair kit designed for OMC stern drive and outboard marine engines. Sierra International is a trusted manufacturer of aftermarket marine parts, delivering OEM-quality components that meet or exceed original equipment specifications.

This kit provides everything needed to restore proper raw water cooling system function, helping prevent engine overheating and extending the life of your powerplant. Replacing the water pump impeller and associated components at regular intervals is a critical part of marine engine maintenance.

Key Features:

• Complete kit includes impeller, housing, wear plate, and all necessary gaskets and seals
• Manufactured to meet or exceed OEM specifications
• High-quality neoprene impeller for reliable water flow and cooling
• Corrosion-resistant components suited for both fresh and saltwater use
• Direct replacement — no modifications required
• Cross-references to OEM part number 18-3494

Sierra's 18-3494 Water Pump Kit is an essential maintenance item for keeping your marine engine running cool and performing at its best. Regular impeller replacement — typically every one to two seasons — is strongly recommended by engine manufacturers to ensure reliable cooling system performance on the water.