Yamaha Lower Unit Gasket – 6GR-W0001-21-00

Ensure a Tight, Leak-Free Seal for Your Yamaha Outboard’s Lower Unit

The Yamaha - Lower unit gasket - 6GR-W0001-21-00 is a genuine OEM replacement designed to maintain a reliable seal between the gearcase and midsection of your Yamaha outboard engine. Crafted from marine-grade materials, this gasket is engineered to prevent water intrusion and oil leaks—protecting internal components and preserving overall performance.

When servicing or replacing your lower unit, using the correct factory gasket ensures long-lasting durability and optimal fit.

Key Features

OEM Precision: Manufactured by Yamaha for seamless fit and factory-standard reliability.

High-Quality Sealing Material: Designed to withstand temperature shifts, pressure changes, and saltwater exposure.

Leak Prevention: Maintains proper oil containment and blocks water intrusion into critical gearcase areas.

Essential for Reassembly: Required when reinstalling or replacing the lower unit.

Compatibility

Part Number: 6GR-W0001-21-00

Designed for select Yamaha outboard models. Refer to your engine's manual or parts diagram to confirm fitment.

Ideal Use Cases

Lower Unit Service: Perfect for routine maintenance, water pump repair, or full gearcase reinstallation.

Oil Leaks or Water Intrusion: Replace worn or damaged gaskets during diagnostics or rebuilds.

Preventive Maintenance: Use fresh gaskets whenever the lower unit is removed to ensure a tight seal.

Why Choose Genuine Yamaha Gaskets?

Unlike aftermarket alternatives, the Yamaha - Lower unit gasket - 6GR-W0001-21-00 is made to Yamaha’s exact specifications, ensuring proper sealing under marine conditions. OEM parts reduce the risk of premature leaks, misalignment, and performance loss, giving you peace of mind every time you hit the water.

Frequently Asked Questions

Do I need to apply sealant with this gasket?

Yamaha typically recommends using a marine-grade gasket sealer for certain applications. Refer to your engine’s service manual for specific instructions.

Can I reuse the old gasket if it looks fine?

It's strongly advised to replace the gasket anytime the lower unit is removed. Reusing old gaskets can lead to leaks or poor sealing.

Is this gasket compatible with 2-stroke or 4-stroke engines?

This part fits specific Yamaha models regardless of stroke type. Always check your engine’s part diagram to confirm fitment for part number 6GR-W0001-21-00.

• Supersessions
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