Manifold/Carburetor Gasket – Fits Yamaha 4HP & 6HP F4/F6 4-Stroke Outboards (Replaces 6BX-E3646-00, 6EE-E3646-00)

Manifold/Carburetor Gasket – Fits Yamaha 4HP & 6HP F4/F6 4-Stroke Outboards

This manifold/carburetor gasket ensures a proper seal between the carburetor and the intake manifold, which is critical for preventing vacuum leaks and maintaining optimal engine performance. It is designed for specific Yamaha 4-stroke outboard models, providing a reliable, direct-fit replacement for worn or damaged original gaskets.

This part is a direct replacement for Yamaha OEM part numbers 6BX-E3646-00 and 6EE-E3646-00. It may also replace Sierra part number 18-0672, though this requires independent verification.

• Installation Method: Direct replacement
• Compatible Fuel Type: Gasoline
• Package Contents: Includes two gaskets

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 2 x GASKET, MANIFOLD (Replaces 6BX-E3646-00/6EE-E3646-00)

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is cool.
2. Fuel Supply: Turn off the fuel supply valve to prevent spills.
3. Access: Remove the engine cowling or any covers blocking access to the carburetor and intake manifold.
4. Detach Components: Carefully disconnect fuel lines, linkages, and remove the mounting bolts holding the carburetor to the intake manifold.
5. Remove Old Gasket: Take off the old gasket and note its orientation.
6. Clean Surfaces: Thoroughly clean both the carburetor and manifold mating surfaces. Ensure they are free of old gasket material, grease, and debris.
7. Install New Gasket: Position the new gasket correctly onto the manifold studs.
8. Reassemble: Re-mount the carburetor, tightening the bolts evenly to the manufacturer's recommended torque specifications.
9. Reconnect: Re-attach all fuel lines and control linkages.
10. Final Checks: Reconnect the battery. Turn the fuel supply back on and check for any leaks before starting the engine.

Troubleshooting & FAQ

How do I confirm this gasket fits my Yamaha outboard?
This gasket is designed for Yamaha 4-stroke F4 and F6 models from 2006 and newer. Please check the "Compatible Engine Models" table and cross-reference your engine's model and year. Also, verify the OEM part number (6BX-E3646-00 or 6EE-E3646-00) matches your requirements.

What are the signs that my manifold gasket needs replacing?
Common symptoms of a failed gasket include a rough idle, engine stalling, poor performance, or a noticeable vacuum leak sound near the intake manifold. A visual inspection may also reveal cracks or degradation of the old gasket.

Does this kit include one or two gaskets?
This package includes two gaskets, allowing for a complete replacement if your setup requires it or providing a spare for future needs.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.