For Johnson Evinrude/OMC BRP Motor outboard impeller 377178 775519 18-3003

Outboard Impeller for Johnson Evinrude/OMC BRP

This outboard impeller for Johnson Evinrude/OMC BRP motors replaces OEM references 377178, 775519, and 18-3003 to maintain cooling water circulation in the lower unit.

Overview

The outboard impeller is a flexible vane component inside the water pump assembly that pushes water through the cooling passages of a Johnson, Evinrude, OMC, or BRP outboard motor. This replacement outboard impeller uses OEM cross-reference numbers 377178, 775519, and 18-3003 for direct replacement. It is intended for boaters and marine technicians who need a dependable cooling system replacement.

Built For Performance

• Replaces OEM part numbers 377178, 775519, and 18-3003
• Designed for Johnson Evinrude/OMC BRP outboard motors
• Used in the lower unit water pump assembly
• Restores cooling water flow when the original impeller is worn or damaged

On-The-Job Use

• Replacing a worn impeller during water pump rebuilds
• Restoring cooling water flow in Johnson, Evinrude, OMC, and BRP outboards
• Preventing overheating during extended operation
• Supporting freshwater and saltwater boating applications

Specs At A Glance

Good To Know

Q: How can an outboard impeller failure be detected? A: Weak tell-tale water flow, overheating, or visible cracked vanes are common signs. Replace the impeller if any of these appear.

Q: Should other parts be replaced when changing the impeller? A: Many technicians replace the water pump gasket, housing, and wear plate at the same time. Inspect these parts while the lower unit is apart.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.