Yamaha 6D8-4384M-00-00 – Piston, Shuttle 2

Yamaha 6D8-4384M-00-00 – Piston, Shuttle 2

Essential OEM Replacement for Smooth Trim & Tilt Operation

The Yamaha 6D8-4384M-00-00 – Piston, Shuttle 2 is a genuine Yamaha part designed to ensure smooth and reliable operation within your outboard's trim and tilt hydraulic system. This shuttle piston plays a crucial role in regulating hydraulic fluid movement, maintaining proper pressure, and ensuring consistent up/down motor motion. If you're noticing delays or uneven response in your trim and tilt function, this part may be the key fix.

Key Features

Yamaha OEM Precision

Manufactured to Yamaha's exact specifications for perfect fit and reliable function.

Hydraulic System Compatibility

Designed for seamless performance within Yamaha’s trim and tilt mechanisms.

High-Durability Construction

Built to withstand high hydraulic pressures and resist corrosion from marine exposure.

Restores Smooth Trim Response

Helps eliminate hesitation or stuttering during engine tilt and trim adjustments.

Ideal Use Cases

Replacing worn or sluggish shuttle pistons that cause trim performance issues

Addressing hydraulic fluid bypass or pressure loss in the trim/tilt system

As part of a complete trim and tilt system rebuild or maintenance routine

Why Shuttle Pistons Matter

The shuttle piston is a key component that directs hydraulic pressure to control your outboard’s vertical movement. A failing or damaged shuttle piston can lead to lagging response, motor drift, or even full trim failure. By installing the Yamaha 6D8-4384M-00-00 – Piston, Shuttle 2, you help ensure dependable and precise motor positioning every time you hit the water.

Frequently Asked Questions

How can I tell if the shuttle piston in my trim system needs replacement?

Symptoms include jerky or unresponsive trim movements, fluid leaks, or pressure loss. A thorough hydraulic inspection can confirm the issue.

Can I install this piston myself or do I need a technician?

While it’s possible for experienced DIYers, we recommend professional installation to avoid damaging hydraulic seals or misalignment.

Is this piston compatible with all Yamaha outboards?

It is specific to certain Yamaha models. Use your engine's model number to confirm fitment before purchasing.