Nylon Hose Nipple Replacement for Yamaha Outboards – Replaces 6H3-44391

Product Details

This Nylon Hose Nipple is a replacement hose-connection fitting for compatible Yamaha outboard applications. Its nylon construction is suited to marine service and provides a practical replacement for a damaged, cracked, or deteriorated original fitting.

Product records identify this component as a single hose nipple and associate it with Yamaha OEM reference 6H3-44391. Confirm the number, fitting style, hose connection, engine model, and serial range against your original part before ordering.

• Nylon hose nipple construction
• Replacement component for compatible Yamaha outboard applications
• Suitable for restoring a secure hose connection when the original fitting is damaged or worn
• Sold as one hose nipple; hose clamps, hoses, seals, and other components are not included unless separately shown or stated

Part Number Reference

The following manufacturer reference is associated with this replacement component. Reference numbers are provided for identification only; verify physical dimensions and application details before installation.

Compatibility

This fitting is associated with the Yamaha OEM reference listed above. Outboard parts can vary by model, year, configuration, and serial range, so horsepower alone is not sufficient to confirm fitment.

• Check the original fitting and hose size before purchase.
• Compare the original part number with 6H3-44391.
• Confirm the exact engine model and serial range in the applicable parts catalog or service documentation.
• Do not rely on a general Yamaha or Parsun brand match without confirming the part reference and physical fit.

Technical Specifications

Material

Nylon

Part Type

Hose nipple

OEM Reference

6H3-44391

Product Type

Single replacement component, not a kit

Application

Compatible outboard hose connection applications

What's in the Box

• 1× Nylon hose nipple

Hose, hose clamps, seals, fasteners, and other installation hardware are not included unless specifically listed with the product.

Installation Notes

1. Switch off the engine and allow it to cool completely before beginning work.
2. If working on a fuel-related hose connection, shut off the fuel supply and work in a well-ventilated area away from ignition sources.
3. Remove the hose clamp and carefully disconnect the hose from the old fitting.
4. Inspect the hose for cracking, hardening, swelling, or other deterioration; replace a damaged hose before reassembly.
5. Clean the connection area and compare the replacement nipple with the original part.
6. Install the hose fully onto the replacement nipple and position a suitable marine-grade clamp over the hose connection.
7. Tighten the clamp securely without crushing the nylon fitting or damaging the hose.
8. Restore the system and inspect the connection for leaks before returning the engine to service.

Troubleshooting & FAQ

What OEM number does this hose nipple replace?

The product record identifies Yamaha OEM reference 6H3-44391. Verify the number and physical configuration against your original fitting before ordering.

Is this a complete hose or repair kit?

No. This listing is for one nylon hose nipple only. Hoses, clamps, seals, and other components are not included unless separately stated.

Will it fit every Yamaha or Parsun outboard?

No universal fitment claim should be made. Compatibility depends on the exact model, year, configuration, serial range, hose connection, and original part number. Confirm that your application uses reference 6H3-44391.

What is the fitting made of?

The replacement hose nipple is made of nylon.

When should the hose nipple be replaced?

Replace it if it is cracked, brittle, distorted, leaking, or no longer provides a secure hose connection. Inspect the connected hose at the same time.

Can I reuse the original hose clamp?

Reuse the clamp only if it is in good condition and remains suitable for the hose. A corroded or damaged clamp should be replaced with an appropriately sized marine-grade clamp.

Is this an OEM part?

This is an aftermarket replacement component associated with Yamaha OEM reference 6H3-44391; it is not represented as a genuine Yamaha-branded part.

Safety & Important Information

• Verify the original part number, dimensions, hose connection, engine model, and serial range before purchase.
• Do not install a fitting that differs in size, shape, material, or connection style from the original application.
• For fuel-system work, eliminate ignition sources, prevent spills, and follow the engine manufacturer's service procedures.
• Professional installation is recommended when the fitting is part of a fuel, cooling, or other critical system.

About Sea Sierra

• We supply replacement marine components selected for practical service applications.
• Parts should always be matched by verified reference number and application details rather than horsepower alone.
• Contact support if you need help comparing the original fitting with the listed reference.