Powerhead Gasket Kit – Fits Yamaha 115-130HP V4 Outboards (Replaces 6F3-W0001-A4-00)
Powerhead Gasket Kit – Fits Yamaha 115-130HP V4 Outboards (Replaces 6F3-W0001-A4-00) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Product Details
This complete Powerhead Gasket Kit – Fits Yamaha 115-130HP V4 Outboards (Replaces 6F3-W0001-A4-00) is designed for Yamaha 115-130HP V4 2-stroke outboard engines manufactured between 1984 and 1987. It provides all the necessary gaskets for a full powerhead rebuild, ensuring a reliable seal and restoring engine performance.
It serves as a direct replacement for several OEM and aftermarket part numbers, including Yamaha 6F3-W0001-A4-00 and 6F3-W0001-04-00, Pro Marine 2120, Sierra 18-4403, and GLM 9-64406.
- Engineered for direct-fit installation.
- Includes a complete set of gaskets for a powerhead overhaul.
- For use with gasoline-fueled 2-stroke marine engines.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Pro Marine | 2120 |
| Sierra | 18-4403 |
| Sierra | 18-4411 |
| GLM | 9-64406 |
| Yamaha | 6F3-W0001-A4-00 |
| Yamaha | 6F3-W0001-04-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 115ETLK | 115 | 2-Stroke | 1984–1987 | 6F3-W0001-A4-00 | V4 engine |
| Yamaha | 115ETXK | 115 | 2-Stroke | 1984–1987 | 6F3-W0001-A4-00 | V4 engine |
| Yamaha | 130ETLK | 130 | 2-Stroke | 1984–1987 | 6F3-W0001-A4-00 | V4 engine |
| Yamaha | 130ETXK | 130 | 2-Stroke | 1984–1987 | 6F3-W0001-A4-00 | V4 engine |
Technical Specs
- Product Type
- Powerhead Gasket Kit
- Installation
- Direct replacement
- Fuel Type
- Gasoline
- Dimensions
- 13.38″ L × 1.63″ W × 18.25″ H
- Other Attributes
- Complete powerhead gasket set for rebuilding
What’s in the Box
- 1x Complete Powerhead Gasket Set
Installation Notes
- Before starting, disconnect the battery and all fuel lines for safety.
- Carefully disassemble the powerhead assembly, documenting and organizing all parts, bolts, and connections.
- Thoroughly clean all mating surfaces on the engine block and cylinder heads. Ensure all old gasket material and sealant residue is completely removed.
- Compare each new gasket from the kit with its corresponding old one to confirm an exact match in shape and alignment.
- Install the new gaskets on clean, dry surfaces. Follow the engine manufacturer's service manual for the correct torque specifications and tightening sequence.
- Reassemble the powerhead and carefully reconnect all components, hoses, and electrical wiring.
- After reassembly, check for any fuel, exhaust, or coolant leaks before operating the engine under load.
Troubleshooting & FAQ
How do I know if this gasket kit fits my specific engine model?
This kit is designed for Yamaha 115-130HP V4 2-stroke outboards from 1984–1987. Please review the 'Engine & Model Compatibility' table and cross-reference your engine's model and year to ensure a match. Verifying the OEM part number (6F3-W0001-A4-00) against your service manual is also recommended.
Is this a complete kit for a powerhead rebuild?
Yes, this is a complete powerhead gasket set containing the necessary gaskets for a standard rebuild. However, it does not include seals or other components that may be needed depending on the scope of your repair. The 'What's in the Box' section specifies what is included.
What are the common signs of a failing powerhead gasket?
Symptoms of a blown powerhead gasket can include loss of compression in one or more cylinders, water mixing with engine oil (milky oil), engine overheating, or visible water/exhaust leaks from the engine block seams.
Do I need to use sealant with these gaskets?
It depends on the specific application and gasket type. Always consult your engine's official service manual. Some gaskets are designed to be installed dry, while others may require a specific type of sealant applied to certain areas.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
