Carburetor Base Gasket – Fits Yamaha 75-90 HP Outboard Engines (Replaces 688-14198-A1)
Carburetor Base Gasket – Fits Yamaha 75-90 HP Outboard Engines (Replaces 688-14198-A1) 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 Carburetor Base Gasket creates a crucial seal between the carburetor and intake manifold on a range of Yamaha 75-90 HP, 2-stroke and 4-stroke outboard engines. It prevents air leaks that can lead to poor engine performance, ensuring proper fuel and air mixture for reliable operation.
This component is a direct replacement for Yamaha OEM part numbers 688-14198-A1-00 and the superseded version 688-14198-A2-00.
- Installs between the carburetor assembly and the intake manifold.
- Engineered to prevent vacuum leaks and ensure stable engine idling.
- Designed for use in marine gasoline engine environments.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Yamaha | 688-14198-A1-00 | 688-14198-A2-00 |
| Yamaha | 688-14198-A2-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yamaha | Z150P/Q/TLR | 150 | 2-Stroke | 688-14198-A1 | Superseded by 688-14198-A2 |
| Yamaha | LZ150P | 150 | 2-Stroke | 688-14198-A1 | Superseded by 688-14198-A2 |
| Yamaha | Z175G/GET | 175 | 2-Stroke | 688-14198-A1 | Superseded by 688-14198-A2 |
| Yamaha | Z200NETO/N/TR/PET | 200 | 2-Stroke | 688-14198-A1 | Superseded by 688-14198-A2 |
| Yamaha | LZ200N | 200 | 2-Stroke | 688-14198-A1 | Superseded by 688-14198-A2 |
| Yamaha | Z250G/GET/B | 250 | 2-Stroke | 688-14198-A1 | Superseded by 688-14198-A2 |
| Yamaha | 75-90 HP Models | 75-90 | 688-14198-A1 | From TUO ZHOU listing |
Technical Specs
- Product Type
- Carburetor Base Gasket
- Installation
- Between carburetor and intake manifold
- Fuel Type
- Gasoline
- Dimensions
- 11.0" L x 10.0" W x 0.5" H
- Warranty
- 3 months (TUO ZHOU aftermarket)
- Other Technical Attributes
- Engine component for fuel delivery system
What’s in the Box
- 1 x Gasket (688-14198-A1 / 688-14198-A2-00)
Installation Notes
Professional installation is recommended. Ensure the engine is off and cool before starting. Disconnect the battery. Carefully remove the carburetor assembly. Remove the old gasket and thoroughly clean both mating surfaces on the carburetor and the intake manifold, ensuring they are free of any old residue or debris. Place the new gasket and reinstall the carburetor, tightening bolts to the manufacturer's specified torque in a crisscross pattern.
Troubleshooting & FAQ
How do I know if this gasket fits my engine?
This gasket is listed for Yamaha 75-90 HP outboards and also fits specific Z150, Z175, Z200, and Z250 models. The most reliable method of confirming fitment is to match your engine's original part number to 688-14198-A1 or 688-14198-A2. Please check our compatibility table and verify your part before ordering.
What are the signs of a failing carburetor base gasket?
Symptoms of a bad gasket include rough or unstable idling, hesitation or stalling, reduced engine power, and sometimes a whistling or hissing sound from the engine, indicating a vacuum leak. A visual inspection might reveal cracks, brittleness, or discoloration on the old gasket.
Should I use sealant with this gasket?
This gasket is designed to create a seal when installed dry. Generally, you should not use any RTV silicone or other chemical sealants, as they can interfere with the seal or contaminate the fuel system. Always follow the specific instructions in your engine's service manual.
How often should this gasket be replaced?
It is best practice to replace the carburetor base gasket any time the carburetor is removed for service, cleaning, or rebuilding. It is a single-use seal and should not be reused to ensure a leak-free connection.
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.
