93210-37M67 Water Pump O-Ring for Yamaha | JLM Marine

Water Pump O-Ring for Yamaha Outboard & Waverunner Engines – 93210-37M67

This high-quality aftermarket water pump O-ring is designed to fit a wide range of Yamaha outboard motors (40HP to 220HP) and Waverunner models from the 1980s and early 1990s. Manufactured from durable rubber, it provides a strong, wear-resistant seal to ensure reliable performance across multiple fuel system applications.

This part directly replaces Yamaha OEM part number 93210-37M67 as well as aftermarket equivalents from GLM and Sierra. It is compatible with both 2-stroke and V6 Special models across various horsepower ratings and years.

• Material: Premium rubber construction for long-lasting durability and superior sealing
• Easy Installation: Direct replacement for old or worn O-rings with simple 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.

Technical Specifications

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is off and cool before starting any work.
2. Access the Water Pump: Remove the lower unit or access panel to expose the water pump assembly or fuel system component where the O-ring is located.
3. Remove Old O-Ring: Carefully extract the worn or damaged O-ring using a pick or small flathead screwdriver. Avoid scratching the mating surfaces.
4. Clean Mating Surfaces: Wipe both the groove and the sealing surface clean of debris, corrosion, or old sealant using a lint-free cloth.
5. Inspect New O-Ring: Compare the new O-ring with your original part to confirm size and shape match the specifications in the product images.
6. Lubricate O-Ring: Apply a thin coat of marine grease or compatible lubricant to the new O-ring to ease installation and prevent tearing.
7. Install New O-Ring: Seat the O-ring evenly into the groove, ensuring it sits flat without twists or kinks.
8. Reassemble Components: Reinstall the water pump housing or fuel system component, following the manufacturer's torque specifications for all fasteners.
9. Reconnect Battery: Restore electrical connections and double-check all fittings are secure.
10. Test Operation: Start the engine in a test tank or on-water and monitor for leaks around the O-ring area during the first few minutes of operation.

Troubleshooting & FAQ

Q: How do I confirm this O-ring fits my engine?
A: Cross-reference your engine model and year with the compatibility table above. You can also verify the OEM part number (93210-37M67) in your Yamaha parts diagram or service manual.

Q: What are the signs that my water pump O-ring needs replacement?
A: Common symptoms include reduced water flow from the telltale, engine overheating, visible leaks around the lower unit or pump housing, or a cracked/brittle O-ring upon visual inspection.

Q: Can I reuse the old O-ring if it looks okay?
A: It is not recommended. Even if the O-ring appears intact, rubber degrades over time due to heat, fuel exposure, and compression.

Q: How often should I replace this O-ring?
A: Replace the O-ring every time you service the water pump (typically every 2–3 years or 200–300 hours of operation) or whenever you disassemble the fuel system component it seals.

Q: Is this an OEM or aftermarket part?
A: This listing is an aftermarket replacement part manufactured to OEM specifications using comparable-grade materials.