Yamaha Power Trim & Tilt Assy – 66Y-43800-08-00

OEM Yamaha Trim & Tilt Assembly for Reliable Hydraulic Performance

The Yamaha Power Trim & Tilt Assembly – 66Y-43800-08-00 is a genuine OEM component built to deliver smooth, dependable hydraulic operation for your Yamaha outboard. Essential for adjusting your engine angle while underway, this assembly improves handling, fuel efficiency, and overall ride comfort. Precision-engineered to Yamaha’s exacting standards, it ensures perfect fitment and factory-grade performance in even the toughest marine environments.

Key Features

• OEM Yamaha Part: Direct replacement assembly for exact fit and function.
• Smooth Hydraulic Operation: Provides effortless lifting and lowering of your outboard for docking, shallow-water navigation, or trailering.
• Marine-Grade Durability: Corrosion-resistant housing and components built to withstand constant saltwater exposure.
• Plug-and-Play Installation: Arrives fully assembled and ready for quick replacement—no modifications required.
• Consistent Performance: Designed to maintain stable engine trim settings under load and vibration.

Compatibility

Part Number: 66Y-43800-08-00 (Superseded by 66Y-43800-07-00)
Fits select Yamaha outboard models. Always confirm compatibility using your engine’s parts diagram or service manual before purchase.

Ideal Use Cases

• Replacing a Failed Trim & Tilt: Restore smooth, responsive operation after pump or cylinder wear.
• Preventative Maintenance: Replace corroded or slow-moving units before failure occurs.
• Performance Reliability: Upgrade older systems with a genuine Yamaha assembly for confidence on the water.

Why Proper Trim & Tilt Matters

Trim and tilt control is critical for boat handling, efficiency, and safety. By maintaining the correct motor angle, you’ll achieve smoother acceleration, improved fuel economy, and easier navigation in shallow water. A genuine Yamaha assembly ensures hydraulic reliability, precise movement, and long-term durability compared to aftermarket alternatives.

Frequently Asked Questions

What symptoms indicate a failing trim & tilt unit?
Slow response, jerky or uneven lifting, fluid leaks, unusual noise, or inability to hold trim position.

Can I install this myself?
Yes, it’s designed for straightforward installation if you’re familiar with Yamaha outboard maintenance. Otherwise, professional installation is recommended to ensure proper fluid fill and bleeding.

Does this part come pre-filled with fluid?
No. You’ll need to add Yamaha-approved hydraulic fluid and bleed the system after installation.

• Supersessions
  66Y-43800-01-4D, 66Y-43800-07-00, 66Y-43800-07-00, 66Y-43800-09-4D