Water Pump Impeller – Fits Yamaha F300A/F350A V8 Outboards (Replaces 6AW-44352-00-00)

Vendor: JLM Marine
Availability: In Stock
Product Type: Water Pump Impeller
$15.00
$15.00
Subtotal: $15.00

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Water Pump Impeller – Fits Yamaha F300A/F350A V8 Outboards (Replaces 6AW - 44352 - 00 - 00) - JLM Marine Boat Parts Limited

Water Pump Impeller – Fits Yamaha F300A/F350A V8 Outboards (Replaces 6AW-44352-00-00)

$15.00

Water Pump Impeller – Fits Yamaha F300A/F350A V8 Outboards (Replaces 6AW-44352-00-00)

$15.00

Water Pump Impeller – Fits Yamaha F300A/F350A V8 Outboards (Replaces 6AW-44352-00-00)

This water pump impeller is designed for Yamaha F300A/F350A 5.3L V8 4-Stroke outboard engines from 2006 and newer. It serves as a direct-fit replacement, ensuring proper cooling system function and engine protection.

Replaces the following part numbers: Yamaha 6AW-44352-00-00, Sierra CEF500389N, and JLM Marine 6AW-44352-00-00.

  • Installation Method: Direct OEM Replacement
  • Material: High-durability neoprene for reliable performance in marine environments.
  • Package includes one water pump impeller.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number Notes
JLM Marine 6AW-44352-00-00 Aftermarket Replacement
Yamaha 6AW-44352-00-00 Primary OEM Part Number
Yamaha 6AW-44352-00 Interchangeable
Yamaha 6AW-44352-01-00 Interchangeable
Sierra CEF500389N Aftermarket Replacement

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.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yamaha F300A 300 4-Stroke 2006+ 6AW-44352-00-00 V8 5.3L
Yamaha F350A 350 4-Stroke 2006+ 6AW-44352-00-00 V8 5.3L
Yamaha F300TUR 300 4-Stroke 2007-2009 6AW-44352-00-00 V8
Yamaha F300TXR 300 4-Stroke 2007-2009 6AW-44352-00-00 V8
Yamaha LF300TUR 300 4-Stroke 2007-2009 6AW-44352-00-00 V8
Yamaha LF300TXR 300 4-Stroke 2007-2009 6AW-44352-00-00 V8
Yamaha F350TUR 350 4-Stroke 2007-2009 6AW-44352-00-00 V8
Yamaha F350TXR 350 4-Stroke 2007-2009 6AW-44352-00-00 V8
Yamaha LF350TUR 350 4-Stroke 2007-2009 6AW-44352-00-00 V8
Yamaha LF350TXR 350 4-Stroke 2007-2009 6AW-44352-00-00 V8
Yamaha F350UCA/XCA 350 4-Stroke 2010-2011 6AW-44352-00-00 V8
Yamaha LF350UCA/XCA 350 4-Stroke 2010-2011 6AW-44352-00-00 V8
Yamaha F350AET1U/X 350 4-Stroke 2010 6AW-44352-00-00 V8
Yamaha FL350AET1U/X 350 4-Stroke 2010 6AW-44352-00-00 V8
Yamaha F350UCB/XCB 350 4-Stroke 2012-2015 6AW-44352-00-00 V8
Yamaha LF350UCB/XCB 350 4-Stroke 2012-2015 6AW-44352-00-00 V8
Yamaha F350NCB 350 4-Stroke 2014-2015 6AW-44352-00-00 V8
Yamaha F350UCC/XCC 350 4-Stroke 2016-2019 6AW-44352-00-00 V8
Yamaha LF350UCC/XCC 350 4-Stroke 2016-2019 6AW-44352-00-00 V8
Yamaha F350NCC 350 4-Stroke 2016-2019 6AW-44352-00-00 V8
Yamaha F350NCC2 350 4-Stroke 2018-2019 6AW-44352-00-00 V8

Technical Specifications

Specification Value
Product Type Water Pump Impeller
Installation Direct OEM Replacement
Material Neoprene
Color Black
Interchange Part Numbers 6AW-44352-00, 6AW-44352-01-00
Application Yamaha F300A/F350A V8 Outboards
Replaces OEM Part Number 6AW-44352-00-00

Package Contents

  • 1 x Water Pump Impeller (Replaces 6AW-44352-00-00)

Note: This part is a standalone component. It is also included in the complete Water Pump Repair Kit 6AW-W0078-00-00. If you require the full kit with housing, gaskets, and hardware, please verify you are purchasing the correct item. The full kit typically includes:

  • 1 x Insert, Cartridge (6AW-44322-00-00)
  • 1 x O-Ring (93210-94003-00)
  • 1 x O-Ring (93210-37M67-00)
  • 1 x Impeller (6AW-44352-00-00)
  • 1 x Key (6AW-44336-00-00)
  • 1 x Outer Plate, Cartridge (6AW-44323-00-00)
  • 1 x Gasket, Water Pump (6AW-44315-00-00)
  • 2 x Pin, Dowel (93606-12019-00)
  • 4 x Bolt, With Washer (90119-08M14-00)

Installation Guide

For a safe and effective replacement, follow these general steps. Always refer to your engine's specific service manual for detailed instructions and torque specifications.

  1. Disconnect Power: Disconnect the negative battery cable to prevent accidental starting.
  2. Remove Lower Unit: Drain the gearcase lubricant and unbolt the lower unit (gearcase) from the outboard's midsection. Be prepared for it to be heavy.
  3. Access the Pump: Place the lower unit on a workbench and remove the bolts securing the water pump housing.
  4. Inspect & Remove Old Impeller: Lift the housing off. Note the rotational direction of the old impeller's fins. Remove the impeller, wear plate, gaskets, and woodruff key.
  5. Clean Surfaces: Thoroughly clean all residue from the housing interior and the driveshaft.
  6. Install New Impeller: Install the new woodruff key, gaskets, and wear plate. Lubricate the inside of the new pump housing with a marine-grade lubricant. Slide the new impeller onto the driveshaft while turning the shaft in its normal rotational direction to bend the blades correctly.
  7. Reassemble Pump: Reinstall the pump housing and tighten the bolts to the manufacturer's specified torque.
  8. Reinstall Lower Unit: Guide the lower unit back into place, ensuring the driveshaft, shift shaft, and water tube align correctly. Bolt it securely.
  9. Final Checks: Refill the gearcase with fresh lubricant. Reconnect the battery. Start the engine using a flush-out device or in the water and verify a strong, steady stream from the telltale port.

Troubleshooting & FAQ

How do I confirm this impeller fits my engine?
The most reliable method is to match your existing part number to 6AW-44352-00-00. You can also use the comprehensive "Compatible Engine Models" table on this page to find your specific Yamaha model, year, and HP. For additional verification, we recommend using the Yamaha Serial Number Guide linked above.

What are the signs of a failing water pump impeller?
Common symptoms include a weak or no water stream from the engine's "telltale" indicator, engine overheating alarms, or a reduction in engine power. A damaged impeller cannot effectively cool the engine, leading to serious damage if ignored.

How often should I replace the impeller?
As a critical preventative maintenance item, we recommend replacing the water pump impeller annually or every 100-300 hours of use, whichever comes first. This helps prevent unexpected failures due to material fatigue from age and use.

Is this the complete repair kit or just the impeller?
This listing is for the standalone impeller only (part number 6AW-44352-00-00). If you need the housing, gaskets, O-rings, and other hardware, search for the complete Water Pump Repair Kit (part number 6AW-W0078-00-00).

OEM vs. Aftermarket?
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.

How fast do you ship and how much does it cost?
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.

What is your warranty and return policy?
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.

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

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