Base Gasket – Fits Yamaha 200-250 HP V6 (Replaces 61A-45113-A0-00)
Base Gasket – Fits Yamaha 200-250 HP V6 (Replaces 61A-45113-A0-00) is backordered and will ship as soon as it is back in stock.
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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 powerhead Base Gasket – Fits Yamaha 200-250 HP V6 is a crucial component for various Yamaha 76° V6 outboard engines manufactured between 1990 and 2005. It ensures a proper seal for the powerhead assembly, preventing leaks and maintaining engine compression. Note: This part is not compatible with V6 HPDI models.
This gasket is a direct replacement for Yamaha OEM part 61A-45113-A0-00 and also interchanges with Southern Marine 61A-45113-A0-00 and Rareelectrical 511-13.
- Installs on the powerhead base.
- Made from high-quality, OEM-spec materials for durability.
- Engineered for gasoline outboard engines.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | 
|---|---|
| Yamaha | 61A-45113-A0-00 | 
| Southern Marine | 61A-45113-A0-00 | 
| Rareelectrical | 511-13 | 
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Years | OEM Part No. | Notes | 
|---|---|---|---|---|---|
| Yamaha | V6 76° | 200 | 1998–2005 | 61A-45113-A0-00 | 6-cylinder engine | 
| Yamaha | V6 76° | 225 | 1994–2004 | 61A-45113-A0-00 | 6-cylinder engine | 
| Yamaha | V6 76° | 250 | 1990–2004 | 61A-45113-A0-00 | 6-cylinder engine | 
Technical Specs
- Product Type
- Base Gasket
- Installation
- Powerhead
- Fuel Type
- Gasoline
- Housing Material
- OEM-Spec Material
- Dimensions
- 36" L x 24" W x 2" H
- Warranty
- 1 Year (Rareelectrical)
- Other Technical Attributes
- Will NOT fit V6 HPDI models (use 4511-1 instead)
What’s in the Box
- 1 x Base Gasket (Replaces 61A-45113-A0-00)
Installation Notes
- Disconnect the battery and ensure the engine is cool. Drain relevant fluids like coolant and oil.
- Carefully remove the powerhead from the midsection, following the steps in your engine’s service manual.
- Remove the old base gasket and thoroughly clean both mating surfaces. Ensure they are free of any old gasket material, sealant, or debris.
- Place the new gasket into position, ensuring all bolt holes and passages align perfectly.
- Carefully reinstall the powerhead, tightening bolts in the sequence and to the torque specifications outlined in your service manual.
- Reconnect all hoses, cables, and components. Refill fluids, start the engine, and check for any leaks.
Troubleshooting & FAQ
Will this gasket fit my Yamaha HPDI engine?
No, this gasket is specifically designed for non-HPDI Yamaha 76° V6 engines. It is NOT compatible with V6 HPDI models, which require a different part (such as 4511-1).
What are the signs of a bad powerhead base gasket?
Symptoms of a failed base gasket can include water mixing with oil, external coolant or oil leaks from the powerhead base, engine overheating, or a loss of compression, which leads to poor performance and rough running.
Should I use sealant with this gasket?
Generally, modern gaskets like this are designed to be installed on clean, dry surfaces without additional sealant. However, always refer to your official Yamaha service manual for the recommended procedure for your specific engine model.
Is this a genuine Yamaha part?
No, this is a high-quality aftermarket part, not an OEM component. It has been manufactured to meet or exceed original equipment specifications for fit, material, and performance.
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
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