6E5-44391 Hose Nipple for Yamaha LZ250 Z240 L140 L130 | JLM Marine

Hose Nipple for Yamaha LZ250 Z240 L140 L130 L150 LZ150 Z150 D150 Z175 L200 LZ200 Z200 L225 Z225 L250 Z250 Z300 LZ300

This Hose Nipple is designed as a direct replacement for Yamaha outboard engines, fitting a wide range of models from 25 HP to 300 HP across multiple series. Engineered to match OEM specifications, this lower motor cover nipple ensures reliable coolant or water flow routing in your outboard motor.

Direct Replacements: 6E5-44391, 6E5-44391-00, 6E5443910000. This aftermarket part offers cost-effective performance for Yamaha LZ, Z-series, L-series, and D-series outboards.

• Fits Yamaha outboards ranging from 25 HP to 300 HP
• Drop-in replacement for lower motor cover hose connection
• Durable construction for marine environments

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

Package Contents

Your package includes:

• Hose Nipple × 1

Installation Guide

1. Ensure the engine is off and cool before beginning work. Disconnect the battery to prevent accidental starts.
2. Locate the lower motor cover hose nipple on your Yamaha outboard. Note the orientation and any connected hoses.
3. Carefully disconnect any coolant or water hoses attached to the old nipple. Have a container ready to catch any residual fluid.
4. Remove the old hose nipple by unscrewing or pulling it from its mounting point, depending on your engine's design.
5. Clean the mounting area thoroughly to remove debris, old sealant, or corrosion.
6. Compare the new nipple with the old part to confirm identical sizing and thread pattern.
7. Apply marine-grade sealant if required by your engine's service manual. Insert the new nipple into the mounting position.
8. Secure the nipple firmly by hand-tightening, then use a wrench to achieve the manufacturer's specified torque.
9. Reconnect all hoses to the new nipple, ensuring clamps are properly tightened to prevent leaks.
10. Refill the cooling system with the appropriate coolant or freshwater if required.
11. Reconnect the battery and start the engine. Check for leaks around the nipple and hose connections.
12. Run the engine at idle for several minutes and inspect all connections once more before returning to normal operation.

Troubleshooting & FAQ

Q: How do I confirm this hose nipple fits my Yamaha outboard?
A: Cross-reference your engine's model number with the compatibility table above. You can also check your Yamaha parts diagram using the serial number guide linked in the Compatible Engine Models section to verify part number 6E5-44391.

Q: What are the signs that my hose nipple needs replacement?
A: Look for visible cracks, corrosion, or brittleness in the nipple material. Coolant leaks around the lower motor cover or overheating issues can also indicate a failing nipple that needs replacement.

Q: Can I reuse the old hose clamps when installing this nipple?
A: Inspect your existing clamps carefully for rust or weakening. If they show signs of wear, replace them with new stainless-steel clamps to ensure a leak-free connection.

Q: Is marine sealant required for installation?
A: Consult your Yamaha service manual for your specific model. Some installations require marine-grade sealant on threads or sealing surfaces, while others rely on O-rings or gaskets alone.

Q: What is the difference between OEM and aftermarket hose nipples?
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.