6CE-44315-00 Water Pump Base Gasket for Yamaha F225 F250 F300 FL225 FL250 FL300 | JLM Marine

Water Pump Base Gasket – Fits Yamaha F225-F300 4-Stroke Outboards (2010-2017)

This aftermarket water pump base gasket is engineered for Yamaha 4-stroke outboard engines, specifically the F225, F250, F300, FL225, FL250, and FL300 models from 2010 to 2017. Built to OEM specifications, it ensures a reliable seal for your water pump base, preventing leaks and maintaining optimal cooling performance.

Direct replacement for Yamaha OEM part number 6CE-44315-00-00. This gasket is a critical component in your outboard's cooling system, designed to withstand high temperatures and marine environments.

• Single gasket included – direct-fit replacement for water pump base
• Aftermarket quality meeting OEM standards
• Essential for maintaining proper engine cooling during water pump service

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 purchase includes:

• 1 × Water Pump Base Gasket (6CE-44315-00)

Installation Guide

1. Preparation: Disconnect the battery and flush the cooling system. Remove the lower unit according to your engine's service manual.
2. Access the Water Pump: Remove the water pump housing bolts and carefully separate the housing from the base.
3. Remove Old Gasket: Clean all old gasket material from both the water pump base and housing surfaces using a gasket scraper. Ensure surfaces are completely clean and dry.
4. Inspect Surfaces: Check for any damage, warping, or corrosion on mating surfaces. Address any issues before proceeding.
5. Position New Gasket: Place the new gasket onto the water pump base, ensuring proper alignment with all bolt holes and passages.
6. Reassemble Housing: Carefully position the water pump housing over the gasket. Install bolts hand-tight first to ensure proper alignment.
7. Torque Bolts: Tighten bolts to manufacturer's specifications in a criss-cross pattern to ensure even pressure distribution.
8. Reinstall Lower Unit: Follow your service manual to reinstall the lower unit, ensuring all connections are secure.
9. Test for Leaks: Reconnect the battery and run the engine in a test tank or on muffs. Check for any water leaks around the gasket area.
10. Final Check: After initial run, recheck bolt torque and inspect for any seepage.

Troubleshooting & FAQ

Q: How do I confirm this gasket fits my Yamaha outboard?
A: Verify that your engine is one of the following models from 2010-2017: F225, F250, F300, FL225, FL250, or FL300. Cross-check your original gasket with part number 6CE-44315-00-00 to ensure compatibility.

Q: When should I replace the water pump base gasket?
A: Replace this gasket whenever you service your water pump or if you notice coolant leaks around the pump base. It's recommended to replace it as preventive maintenance during any water pump rebuild.

Q: What are signs that my water pump base gasket is failing?
A: Common symptoms include water leaks around the pump base, overheating engine, reduced water flow from the tell-tale, or visible deterioration of the gasket material during inspection.

Q: Can I reuse the old gasket if it looks intact?
A: No, gaskets are designed for single use. Once compressed, they lose their sealing properties and should always be replaced during reassembly to prevent leaks.

Q: Do I need any sealant with this gasket?
A: Typically, a quality gasket does not require additional sealant. However, consult your Yamaha service manual for specific recommendations, as some applications may call for a light coating of gasket sealant.

Q: Is this an OEM part or aftermarket?
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.