Yamaha - Gear Pump Assembly - Hydraulic Trim & Tilt System - 6EK-43830-00-00

Overview

When trim and tilt starts getting slow or inconsistent, the gear pump is usually where I start looking. It’s what keeps hydraulic fluid moving under pressure, so when it’s worn out, you feel it every time you try to adjust the motor. I’ve replaced a few of these on older setups, and the difference is immediate—smooth, responsive movement again. It’s one of those parts that brings the whole system back to life when it’s right.

Key Features

• Consistent Hydraulic Pressure – Maintains steady fluid movement for smooth trim and tilt operation.
• Responsive System Performance – Helps restore quick and reliable engine positioning adjustments.
• Durable Internal Gearing – Built to handle repeated hydraulic cycling under load.
• Sealed Pump Construction – Designed to minimize leaks and maintain system integrity.
• Direct Fit Replacement – Matches Yamaha specifications for proper alignment and function.

Engine & Boat Compatibility

Designed for Yamaha outboard trim and tilt systems requiring a gear-driven hydraulic pump assembly. Commonly used across a variety of Yamaha outboards on fishing, recreational, and commercial boats. Suitable for both freshwater and saltwater environments where dependable trim and tilt performance is essential.

FAQ

Q: What are signs the gear pump is failing?
A: Slow trim movement, weak lifting power, or unusual whining noises during operation are common signs.

Q: Does this pump need to be primed after installation?
A: Yes, you’ll want to cycle the trim system a few times to remove air and ensure proper fluid flow.

Q: Any tips when installing this pump?
A: Make sure hydraulic lines are clean and properly tightened, and check fluid levels before operating.

Q: How does it hold up in saltwater conditions?
A: It’s built for marine use, but keeping the system clean and checking for corrosion helps extend its life.

Q: Can air in the system affect performance after install?
A: Definitely—air can cause jerky or weak movement, so cycling the system is important to bleed it out.