Water Pump Gasket – Fits Yamaha Outboard Engines (Replaces 679-44316-A0-00)
Water Pump Gasket – Fits Yamaha Outboard Engines (Replaces 679-44316-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 Water Pump Gasket – Fits Yamaha Outboard Engines (Replaces 679-44316-A0-00) is an essential aftermarket component designed to create a watertight seal within the water pump assembly. It is engineered for a precise fit on various Yamaha outboard engines, including many 40HP 2-Stroke models, ensuring your cooling system maintains optimal performance and prevents leaks.
It serves as a direct interchange for Yamaha part numbers 679-44316-00-00 and 679-44316-A0-00, as well as aftermarket equivalents from Sierra (99086), GLM Marine (38061), and EMP (27-08378-1).
- Installs mechanically between water pump components.
- Engineered to provide a reliable seal in marine environments.
- Maintains proper cooling system pressure and efficiency.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 679-44316-A0-00 | Current OEM Part |
| Yamaha | 679-44316-00-00 | Superseded by 679-44316-A0-00 |
| Sierra | 99086 | Aftermarket Interchange |
| GLM Marine | 38061 | Aftermarket Interchange |
| EMP | 27-08378-1 | Aftermarket Interchange |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This component is designed for specific Yamaha outboard engines. Always verify your engine's model and serial number against this list before ordering.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 40J (6J40) | 40 | 2-Stroke | 1990 | 679-44316-A0-00 | Supersedes 679-44316-00-00 |
| Yamaha | 40QE (6R6) | 40 | 2-Stroke | 1990–1991 | 679-44316-A0-00 | Supersedes 679-44316-00-00 |
| Yamaha | CV40ED (6R60) | 40 | 2-Stroke | 1990 | 679-44316-A0-00 | Supersedes 679-44316-00-00 |
| Yamaha | E40D (6J4) | 40 | 2-Stroke | 1990 | 679-44316-A0-00 | Supersedes 679-44316-00-00 |
| Yamaha | 40J (6J4) | 40 | 2-Stroke | 1991 | 679-44316-A0-00 | Supersedes 679-44316-00-00 |
| Yamaha | 40JK (6H9) | 40 | 2-Stroke | 1993 | 679-44316-A0-00 | Supersedes 679-44316-00-00 |
| Yamaha | 40Q (6R6) | 40 | 2-Stroke | 1993 | 679-44316-A0-00 | Supersedes 679-44316-00-00 |
Technical Specs
- Product Type
- Water Pump Gasket
- Installation
- Mechanical installation between water pump components
- Dimensions
- 12.0" L x 10.0" H x 0.2" W
- OEM Part Number
- 679-44316-A0-00
- Superseded Part Numbers
- 679-44316-00-00
- Usage
- For use in Yamaha outboard engine water pump assemblies
What’s in the Box
- 1 x Gasket, water pump (679-44316-A0-00)
Installation Notes
- Disconnect the battery and ensure the engine is turned off and cool before starting work.
- Drain the lower unit gear lube to prevent spills during disassembly.
- Unbolt and carefully remove the lower unit from the outboard motor's driveshaft housing.
- Locate and unbolt the water pump housing. Note the orientation of all parts as you remove them.
- Remove the old gasket, taking care to clean both mating surfaces thoroughly. Use a plastic scraper to avoid gouging the metal.
- Place the new gasket into position, ensuring it aligns correctly with bolt holes and water passages.
- Reassemble the water pump housing, impeller, and other components in reverse order. Tighten bolts to the manufacturer's specified torque.
- Reinstall the lower unit, refill the gear lube, and reconnect the battery.
- Start the engine at idle and check for water leaks and proper water discharge from the tell-tale outlet.
Troubleshooting & FAQ
How do I know if this gasket fits my specific Yamaha engine?
The most reliable method is to check your engine's model number, year, and serial number against the compatibility table provided. You can also cross-reference your existing part number with the ones listed in our Part Number Matrix.
What are the signs of a failing water pump gasket?
Common symptoms include water leaking from the water pump housing area, engine overheating at idle or low speeds, and a weak or inconsistent stream from the tell-tale outlet. A visual inspection may also reveal a cracked, brittle, or compressed gasket.
How often should I replace the water pump gasket?
It is best practice to replace the water pump gasket whenever you service the water pump impeller, which is typically recommended every 1-2 years or 100-200 hours of use, depending on operating conditions (especially in saltwater).
Is this gasket identical to the original OEM part?
This is a direct aftermarket replacement designed to match the fit, form, and function of the original Yamaha part. It is manufactured to meet or exceed OEM specifications for material durability and sealing performance in a marine environment.
Can I install this gasket myself?
While installation is possible for those with mechanical experience, it requires disassembling the lower unit. For safety and to ensure a proper seal, we recommend professional installation if you are not familiar with the procedure.
What is the difference between OEM and aftermarket parts?
This listing is for an aftermarket replacement, not a part from the original equipment manufacturer (OEM). It is built to the same specifications with comparable materials in an ISO 9002 facility and is batch-inspected for consistency and quality.
How fast is shipping and what does it cost?
We ship worldwide quickly, with a typical transit time of 5–15 days. Standard shipping is free, and any available expedited options with their costs will be shown at checkout.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original condition. See our policy page or contact us for instructions.
Safety & Important Info
- Verify images and specifications against your original part before purchasing. If anything differs—even if your model appears on a compatibility list—do not order.
- This is an aftermarket replacement part, not an OEM component. All mentions of brand names and part numbers are for reference purposes only.
- Professional installation is highly recommended for safety, performance, and to prevent damage to your engine.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.
- Fast Global Fulfillment — Enjoy free standard delivery to most regions, with parts typically arriving in 5–15 days.
- Manufacturer-Direct Value — By removing the middleman, we offer fair pricing without ever compromising on materials or quality control.
Payment & Security
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