Lower Base Gasket – Fits Yamaha 115HP, 130HP, 140HP, 150HP Outboards (Replaces 6E5-45114-00, 6E5-45114-A0, 6E5-45114-A1)
Lower Base Gasket – Fits Yamaha 115HP, 130HP, 140HP, 150HP Outboards (Replaces 6E5-45114-00, 6E5-45114-A0, 6E5-45114-A1) 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 high-quality Lower Base Gasket provides a secure seal for the lower base of Yamaha 2-stroke outboard engines. It is designed for a wide range of models from 115HP to 225HP manufactured between 1984 and 2002, ensuring broad compatibility.
It serves as a direct replacement part, cross-referencing with Yamaha OEM numbers 6E5-45114-00, 6E5-45114-A0, and 6E5-45114-A1.
- Designed as a direct-fit replacement for straightforward installation.
- Constructed from durable, non-asbestos gasket material for a reliable, long-lasting seal.
- Engineered to withstand harsh marine environments.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 6E5-45114-A0 | Superseded by 6E5-45114-A1 |
| Yamaha | 6E5-45114-A1 | Current OEM part number |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is compatible with a wide range of Yamaha 2-stroke outboard models from 115HP to 225HP. Please verify your specific engine model and year below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 115ETN | 115 | 2-Stroke | 1984 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 115A | 115 | 2-Stroke | 1985–1994 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 115B | 115 | 2-Stroke | 1988–1997 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 115CETO, 115TXR | 115 | 2-Stroke | 1990–1997 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 115TLRZ, 115TXRZ | 115 | 2-Stroke | 1999–2001 | 6E5-45114-A0 | Superseded by 6E5-45114-A1 |
| Yamaha | 115TLRA, 115TXRA | 115 | 2-Stroke | 2002 | 6E5-45114-A1 | Current part |
| Yamaha | 130BETO | 130 | 2-Stroke | 1990–1998 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 130TLRZ | 130 | 2-Stroke | 1999–2001 | 6E5-45114-A0 | Superseded by 6E5-45114-A1 |
| Yamaha | 130TLRA | 130 | 2-Stroke | 2002 | 6E5-45114-A1 | Current part |
| Yamaha | 140AETO | 140 | 2-Stroke | 1984–1986 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 140BETO | 140 | 2-Stroke | 1988–1989 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 140C, 140CETO | 140 | 2-Stroke | 1994–1999 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 140B | 140 | 2-Stroke | 2000–2001 | 6E5-45114-A0 | Superseded by 6E5-45114-A1 |
| Yamaha | 140CETOL, 140CETOX | 140 | 2-Stroke | 2002 | 6E5-45114-A1 | Current part |
| Yamaha | 150ETN, 150A | 150 | 2-Stroke | 1984–1989 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 150CETO, 150DETO | 150 | 2-Stroke | 1990–1996 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 175A | 175 | 2-Stroke | 1984–1989 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 175BETO, 175B | 175 | 2-Stroke | 1990–1996 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 200ETN, 200AETO | 200 | 2-Stroke | 1984–1985 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 200AET | 200 | 2-Stroke | 1986–1989 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 200ETD, 200BETO | 200 | 2-Stroke | 1990–1996 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 220AET | 220 | 2-Stroke | 1984–1986 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 225AETO | 225 | 2-Stroke | 1987–1989 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
| Yamaha | 225BETO, 225BET | 225 | 2-Stroke | 1990–1996 | 6E5-45114-00 | Superseded by 6E5-45114-A0 |
Technical Specs
- Product Type
- Lower Base Gasket
- Installation
- Direct Replacement
- Housing Material
- Non-asbestos gasket material
- Dimensions
- 31.0cm L x 21.0cm W x 0.2cm H
- Warranty
- 1 Year
- Technical Attributes
- Designed to provide a secure and reliable seal for the lower base of Yamaha outboard engines
What’s in the Box
- 1 x Lower Base Gasket
Installation Notes
- Ensure the engine is off, cool, and disconnected from the battery.
- Remove the engine cowling and any other components obstructing access to the lower base.
- Carefully remove the old gasket. Clean both mating surfaces thoroughly, ensuring they are free of any old material or debris.
- Place the new gasket into position. Ensure it is aligned correctly.
- Reassemble all components in the reverse order of removal, torquing fasteners to the manufacturer's specified values.
- After reassembly, reconnect the battery and check for any leaks around the new gasket before operating the engine under load.
Troubleshooting & FAQ
How do I know if this gasket fits my specific Yamaha engine?
This gasket fits a wide range of Yamaha 2-stroke models from 115HP to 225HP (1984–2002). For an exact match, please cross-reference your engine's model number and year with the 'Engine & Model Compatibility' table on this page.
What are the signs of a failing lower base gasket?
Common signs include visible oil or water leaks around the gasket area, engine overheating, or a noticeable loss of performance. A physical inspection may reveal cracks, brittleness, or degradation of the old gasket material.
Is any sealant required during installation?
In most cases, this gasket is designed to be installed dry without any additional sealants. However, always consult your engine’s official service manual for specific recommendations for your model.
What is the difference between part numbers 6E5-45114-00, 6E5-45114-A0, and 6E5-45114-A1?
These are sequential OEM part numbers from Yamaha. Part number 6E5-45114-00 was superseded by 6E5-45114-A0, which was later superseded by 6E5-45114-A1. They all refer to the same part with the same fit and function and are interchangeable.
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.
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