Yamaha 68T-13641-20-1S – Manifold 1

Yamaha 68T-13641-20-1S – Manifold 1

Engineered for Efficient Exhaust Flow and Long-Term Reliability

The Yamaha 68T-13641-20-1S – Manifold 1 is a genuine Yamaha replacement part designed to deliver optimal exhaust flow and temperature regulation within your outboard motor. Manufactured to meet Yamaha's strict OEM specifications, this manifold ensures proper engine breathing, which directly impacts performance, fuel efficiency, and long-term durability.

Whether you're performing a routine rebuild or replacing a worn or corroded component, this part offers the precise fit and reliability you expect from Yamaha’s factory-engineered products.

Key Features

OEM-Grade Fit and Finish

Built by Yamaha to meet exact engine design standards for fitment, seal, and performance.

Heat-Resistant Cast Construction

Made from durable materials that withstand high temperatures and harsh marine environments.

Critical to Exhaust System Performance

Maintains proper exhaust flow, preventing back pressure and supporting engine efficiency.

Rust and Corrosion Resistant

Factory coatings and material quality protect against saltwater wear and internal degradation.

Ideal Use Cases

Essential replacement for cracked, warped, or rusted manifolds

Ideal during routine engine maintenance or full rebuilds

Ensures optimal combustion and emission performance across all RPM ranges

Why Exhaust Manifold Integrity Matters

A damaged or poorly sealing manifold can lead to engine misfires, overheating, loss of power, or even water intrusion. With the Yamaha 68T-13641-20-1S – Manifold 1, you're ensuring that your engine's exhaust gases are safely and efficiently channeled away, which helps maintain peak performance and protects the internal engine components from undue stress.

Frequently Asked Questions

How do I know if my Yamaha outboard needs a new manifold?

Common signs include rough idling, exhaust leaks, rust, or reduced engine performance. Physical cracks or corrosion are also red flags.

Is this manifold compatible with my model?

To ensure compatibility, reference your outboard’s serial number or consult with our team for a parts match.

Can I install this manifold myself, or do I need a mechanic?

If you're comfortable with engine maintenance and have the right tools, installation is manageable. Always use torque specifications and procedures from Yamaha’s service manual.