Yamaha - Gear Pump Assembly - Engine Lubrication Component - 6C5-43830-01-00

Overview

This is one of those parts you don’t get a second chance with if it fails. The gear pump is what keeps oil moving through the engine, and without steady pressure, things go downhill fast. I’ve seen motors get noisy or run hot when these start to wear out. Keeping a solid pump in place is just part of protecting the engine and keeping it running the way it should.

Key Features

• Consistent Oil Flow – Maintains steady lubrication to protect internal engine parts.

• Precision Gear Design – Uses internal gears to deliver reliable oil pressure under load.

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

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

Engine & Boat Compatibility

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

FAQs

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

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

Q3: Should this be replaced during engine rebuilds?
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 critical to avoid dry running.

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