Yamaha - Outer Plate, Cartridge - Water Pump Component - 6BX-44323-00-00

Overview

If you’ve ever opened up a water pump and seen grooves worn into the plate, you already know how important this piece is. The outer plate sits directly under the impeller and takes constant contact every time the engine runs. Once it’s worn, even a new impeller won’t perform like it should. Swapping this out during service keeps water flow strong and the cooling system working the way it should.

Key Features

• Smooth Impeller Surface – Provides a clean contact area for proper impeller rotation.

• Maintains Pump Efficiency – Helps ensure strong and consistent water flow.

• OEM Fit Accuracy – Matches Yamaha factory specs for correct thickness and alignment.

• Corrosion Resistant Construction – Built to handle constant water exposure and harsh marine conditions.

Engine & Boat Compatibility

Verify compatibility with your specific Yamaha outboard model and part number before installation.

FAQs

Q1: How do I know this plate needs replacing?
A: Look for scoring, grooves, or uneven wear on the surface.

Q2: Can I reuse this plate with a new impeller?
A: Only if it’s perfectly smooth—any wear can reduce pump performance.

Q3: Will a worn plate affect cooling?
A: Yes, it can reduce water flow and lead to higher engine temperatures.

Q4: Should I replace this during every pump service?
A: It depends on wear, but many replace it to maintain full efficiency.

Q5: Is installation difficult?
A: It’s simple when you’re already servicing the water pump.