Yamaha - Gear Pump Assembly - Engine Lubrication Component - 6C5-43830-09-00

Overview

Oil flow is one thing you never want to gamble with on an outboard. This gear pump is what keeps everything inside the engine lubricated and protected while it’s running. When they start to wear out, you’ll notice changes in noise, heat, or pressure before anything else. I’ve seen engines stay healthy for years just because this part was doing its job right.

Key Features

• Consistent Oil Pressure – Maintains steady lubrication throughout the engine.

• Precision Gear Operation – Uses internal gears to deliver reliable oil flow under load.

• OEM Fit Accuracy – Matches Yamaha factory specs for proper installation and alignment.

• Heavy Duty Construction – Built to handle heat, pressure, and continuous operation.

Engine & Boat Compatibility

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

FAQs

Q1: What are signs this gear pump is failing?
A: Low oil pressure, increased engine noise, or rising operating temperatures.

Q2: Can I run the engine with a weak oil pump?
A: No, it can quickly lead to serious internal damage.

Q3: Should this be replaced during an engine rebuild?
A: Yes, it’s often recommended if there’s any sign of wear.

Q4: Does this pump need to be primed before startup?
A: Yes, proper priming is important to avoid dry operation.

Q5: Is installation difficult?
A: It requires mechanical experience and proper alignment during installation.

• Supersessions
  6C5-43830-00-00