93210-94003 Sealing O-Ring for Yamaha | JLM Marine

Sealing O-Ring for Yamaha Marine Outboard Motors – Replaces 93210-94003

This high-quality sealing O-ring is designed for Yamaha marine outboard motors, delivering reliable sealing performance in critical applications. Engineered to meet OEM specifications, this component ensures a secure fit and long-lasting durability in marine environments.

This aftermarket replacement directly replaces Yamaha OEM 93210-94003, as well as aftermarket equivalents including Sierra 18-7471 and GLM 45330. It provides a cost-effective solution without compromising on quality or performance.

• Made of durable rubber material for superior sealing and wear resistance
• Direct replacement for easy installation
• Package includes: 1 piece O-ring

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here's a guide to help you identify your engine's serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

This O-ring is compatible with Yamaha marine outboard motors. Please compare the part photos and specifications with your original component before purchasing to ensure proper fitment.

Technical Specifications

Package Contents

Your purchase includes:

• 1 piece Sealing O-Ring

Installation Guide

1. Turn off the engine and allow it to cool completely before starting any maintenance work.
2. Locate the component where the old O-ring is installed and carefully remove the housing or cover.
3. Remove the old or damaged O-ring using a pick tool or small screwdriver, taking care not to scratch the sealing surfaces.
4. Clean the O-ring groove thoroughly to remove any debris, old lubricant, or residue.
5. Inspect the groove and mating surfaces for any damage, corrosion, or irregularities that could compromise the seal.
6. Lightly lubricate the new O-ring with marine-grade grease or compatible lubricant to ease installation and improve sealing.
7. Carefully position the new O-ring into the groove, ensuring it sits evenly without twisting or pinching.
8. Reinstall the housing or cover, tightening fasteners to the manufacturer's specified torque in a cross-pattern sequence.
9. Double-check that all components are properly secured and aligned.
10. Start the engine and inspect the installation area for any signs of leakage or abnormal operation.

Troubleshooting & FAQ

Q: How do I confirm this O-ring fits my Yamaha outboard?
A: Compare the part number 93210-94003 with your original component, or consult your engine's parts diagram using your model and serial number. Always verify the physical appearance against the product photos before ordering.

Q: How often should I replace this O-ring?
A: Replace the O-ring whenever you service the associated component, or if you notice leaks, cracking, or hardening of the rubber. Regular inspection during routine maintenance is recommended to prevent unexpected failures.

Q: What are the signs that this O-ring needs replacement?
A: Common symptoms include visible fluid leaks, cracked or brittle rubber, loss of elasticity, or deformation. If the O-ring appears flattened, damaged, or fails to provide a proper seal, it should be replaced immediately.

Q: Can I reuse the old O-ring if it looks okay?
A: No, it is not recommended to reuse O-rings even if they appear undamaged. Once compressed, the rubber loses its original sealing properties and may not provide a reliable seal upon reinstallation.

Q: What's the difference between this aftermarket O-ring and the OEM version?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.