Oil Seal, S-Type – Fits Yamaha 20/25 HP Outboards (Replaces 93101-13M37-00)
Oil Seal, S-Type – Fits Yamaha 20/25 HP Outboards (Replaces 93101-13M37-00) is backordered and will ship as soon as it is back in stock.
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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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Oil Seal, S-Type – Fits Yamaha 20/25 HP Outboards (Replaces 93101-1...
Product Details
This aftermarket Oil Seal, S-Type – Fits Yamaha 20/25 HP Outboards (Replaces 93101-13M37-00) is designed for specific Yamaha 2-cylinder, 2-stroke outboards. It is compatible with 20 HP models from 1996–1997 and 25 HP models from 1988–2009 that have a 2.638" cylinder bore.
This part is a direct replacement for Yamaha part number 93101-13M37-00 and WSM 552-19.
- Installation Method: Press-fit
- Engine Compatibility: Fits engines with a 2.638" bore
- Included: One essential oil seal for a complete replacement
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 93101-13M37-00 |
| WSM | 552-19 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 2-Cylinder | 20 | 2-Stroke | 1996–1997 | 93101-13M37-00 | 2.638" bore |
| Yamaha | 2-Cylinder | 25 | 2-Stroke | 1988–2009 | 93101-13M37-00 | 2.638" bore |
Technical Specs
- Product Type
- Crankshaft Oil Seal
- Installation
- Press-fit
- Product Dimensions
- 0.4" H x 9.5" W x 10.5" L
- Fitting Type
- S-Type
- Other Technical Attributes
- For 2.638" bore engines
What’s in the Box
- 1 x Oil seal, S-type (93101-13M37-00)
Installation Notes
- Ensure the engine is off, cool, and disconnected from the power source.
- Access the crankshaft area where the old oil seal is located, removing any interfering components.
- Carefully remove the old seal using a seal puller tool, taking care not to scratch the crankshaft or housing surfaces.
- Thoroughly clean the seal bore and the crankshaft surface, removing any old sealant, debris, or oil residue.
- Lightly lubricate the inner and outer surfaces of the new oil seal with clean engine oil or appropriate grease.
- Position the new seal squarely into the bore with the spring-loaded lip facing the correct direction (usually toward the internal pressure).
- Use a proper seal driver or a socket of the correct diameter to gently and evenly press the seal into place until it is fully seated.
- Reassemble all components in the reverse order of removal.
Troubleshooting & FAQ
How do I know if my crankshaft oil seal needs replacing?
Common signs of a failing oil seal include visible oil leaks from the front or rear of the engine near the crankshaft, a noticeable drop in oil levels without other causes, or an oily residue around the engine bay.
Can I reuse an oil seal?
No. Oil seals are designed for single use only. Removing a seal almost always damages it, and reusing it will lead to leaks. Always replace it with a new one.
Is this seal for the upper or lower crankshaft?
This S-type oil seal is specified as a replacement for Yamaha 93101-13M37-00, which is typically used for the crankshaft. Always consult your service manual to confirm the specific location and part number for your engine model.
What are the signs of an incorrect installation?
An incorrectly installed seal will likely leak oil immediately or shortly after engine startup. A damaged seal (nicked or torn during installation) or a seal not seated squarely in the bore are common causes of failure.
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
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