Yamaha 61A-45111-31-8D – Casing, Upper

Yamaha 61A-45111-31-8D – Casing, Upper

OEM Upper Casing for Precise Fit and Lasting Protection

The Yamaha 61A-45111-31-8D – Casing, Upper is an original Yamaha-manufactured component designed to house and shield critical internal parts of your outboard motor. Built to exact OEM specifications, this upper casing delivers strength, alignment precision, and protection where it matters most.

Whether you're repairing impact damage or restoring your motor to like-new condition, this component ensures structural integrity and performance consistency.

Key Features

Authentic Yamaha OEM Construction

Built for marine-grade durability, corrosion resistance, and factory-perfect compatibility.

Structural Integrity

Offers secure mounting points and enclosure for key motor assemblies, protecting them from debris and vibration.

Exact Fit for Easy Installation

Matches Yamaha factory tolerances—no modifications required.

Ideal Use Cases

Replacing cracked or corroded upper casing on Yamaha outboards

Restoring structural protection after impact damage

Preventative upgrades during engine overhaul or rebuild

Why Upper Casing Condition Matters

Your outboard’s upper casing isn’t just a housing—it plays a crucial role in supporting engine components and maintaining alignment during operation. A damaged or worn Yamaha 61A-45111-31-8D – Casing, Upper can lead to misalignment, vibration, and eventual mechanical failure. Replacing it with an OEM part helps maintain your motor’s performance and lifespan.

Frequently Asked Questions

Is this an OEM part or an aftermarket replacement?

This is a genuine Yamaha OEM part, manufactured to exact factory specifications.

Can this casing be installed by a DIYer?

While installation is straightforward, we recommend having a technician install it if you're unfamiliar with engine disassembly or alignment procedures.

How do I confirm compatibility with my outboard?

Use your Yamaha model and serial number to cross-reference in the Yamaha parts catalog, or contact our support team for assistance.

This product has been superseded by: 61A-45111-32-8D

Yamaha 61A-45111-32-8D - Casing, upper