Sealing O-Ring – Fits Yamaha Marine Outboard Motors (Replaces 93210-94003, 18-7471)
Sealing O-Ring – Fits Yamaha Marine Outboard Motors (Replaces 93210-94003, 18-7471) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Sealing O-Ring – Fits Yamaha Marine Outboard Motors (Replaces 93210...
Sealing O-Ring – Fits Yamaha Marine Outboard Motors (Replaces 93210-94003, 18-7471) is backordered and will ship as soon as it is back in stock.
Product Details
This Sealing O-Ring – Fits Yamaha Marine Outboard Motors (Replaces 93210-94003, 18-7471) is an aftermarket replacement designed for reliable sealing performance on compatible Yamaha marine outboard engines. Engineered to match OEM specifications, this rubber O-ring delivers strong sealing protection and durability for long-term use.
Direct replacement for Yamaha OEM 93210-94003, Sierra 18-7471, and GLM 45330.
- Manufactured from wear-resistant rubber for robust sealing and extended service life
- Drop-in replacement—installs quickly with straightforward operation
- Compare part images with your original component before ordering
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 93210-94003 | OEM Reference |
| Sierra | 18-7471 | Aftermarket Equivalent |
| GLM | 45330 | Aftermarket Equivalent |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | OEM Part No. | Notes |
|---|---|---|
| Yamaha | 93210-94003 | Compatible with Yamaha Marine Outboard Motors |
Technical Specs
- Material
- Rubber
- OEM Reference
- 93210-94003
- Key Features
- Strong sealing, wear-resistant, durable construction
- Installation
- Direct replacement
What's in the Box
- 1× O-Ring
Installation Notes
- Shut off the engine and disconnect the battery before beginning work.
- Locate the sealing surface where the old O-ring is seated.
- Carefully remove the old or damaged O-ring, inspecting the mating surfaces for debris or damage.
- Clean the sealing groove thoroughly with a lint-free cloth and mild solvent if needed.
- Lightly lubricate the new O-ring with compatible marine grease to ease installation and improve sealing.
- Position the new O-ring in the groove, ensuring it seats evenly without twisting or pinching.
- Reassemble the components, torquing fasteners to manufacturer specifications.
- Reconnect the battery and test for leaks during initial operation.
Troubleshooting & FAQ
How do I know if this O-ring fits my engine?
Cross-reference your existing part number with those listed in the Part Number Matrix. If your current O-ring is stamped 93210-94003, 18-7471, or 45330, this replacement is compatible. Always compare dimensions and images before purchase.
What are the signs of a failing O-ring?
Common symptoms include visible leaks around the seal area, loss of fluid or pressure, cracking or hardening of the rubber, and difficulty maintaining proper engine operation. Replace immediately if you observe any of these issues.
Can I reuse an old O-ring?
No. O-rings are single-use sealing components. Once compressed or removed, they lose their original shape and sealing integrity. Always install a new O-ring during reassembly to prevent leaks.
Do I need to lubricate the O-ring during installation?
Yes. A light coating of compatible marine grease helps the O-ring slide into place without twisting or tearing, and improves initial sealing performance. Use only lubricants that are safe for rubber and your engine's operating fluids.
How often should this O-ring be replaced?
Replace the O-ring whenever you disassemble the associated component, or if you notice leaks, cracks, or hardening. Regular inspection during routine maintenance intervals is recommended.
What material is this O-ring made from?
This O-ring is manufactured from durable rubber formulated for marine environments. It offers excellent sealing, wear resistance, and long service life under typical operating conditions.
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 against 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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