SKU: 65759044634

Water Pump Impeller Repair Kit – Fits Yamaha F50A 4-Stroke 50HP (Replaces 6BG-W0078-01)

Sale price$35.55 Regular price$39.50
Save 10%

Pay in installments of $9.88 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Water Pump Impeller Repair Kit – Fits Yamaha F50A 4-Stroke 50HP (Replaces 6BG-W0078-01)Water Pump Impeller Repair Kit Fits Yamaha F50A 4 Stroke 50HP (Replaces 6BG W0078 01) This water pump impeller repair kit is designed for Yamaha 4 Stroke 50 HP F50A models (19912007). It also serves as a compatible service part for select Yamaha E40X, 40X (2 Stroke), and F30A F40B 4 Stroke models. Engineered as a direct replacement for original equipment, this kit ensures proper fit and function, restoring your engine's cooling system performance. It

Water Pump Impeller Repair Kit – Fits Yamaha F50A 4-Stroke 50HP (Replaces 6BG-W0078-01)

This water pump impeller repair kit is designed for Yamaha 4-Stroke 50 HP F50A models (1991–2007). It also serves as a compatible service part for select Yamaha E40X, 40X (2-Stroke), and F30A/F40B 4-Stroke models.

Engineered as a direct replacement for original equipment, this kit ensures proper fit and function, restoring your engine's cooling system performance. It is manufactured to meet or exceed OEM specifications.

  • Installation: Direct OEM replacement parts for straightforward installation.
  • Quality Standard: Produced in an ISO9002 certified factory to ensure reliable performance.
  • Primary Components: Includes the essential impeller and gaskets for a standard service.

Part Number Cross-Reference

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

Brand Part Number
Yamaha 6BG-W0078-00-00
Yamaha 6BG-W0078-01-00
HJ (Aftermarket) YHJB-6BG

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 F50A 50 4-Stroke 1991-2007 6BG-W0078-01-00
Yamaha F30A 30 4-Stroke 6BG-W0078-01-00
Yamaha F40B 40 4-Stroke 6BG-W0078-01-00
Yamaha F30LA 30 4-Stroke 6BG-W0078-01-00
Yamaha F40LA 40 4-Stroke 6BG-W0078-01-00
Yamaha E40X 40 2-Stroke 6BG-W0078-01-00
Yamaha 40X 40 2-Stroke 6BG-W0078-01-00

Technical Specifications

Specification Value
Product Type Water Pump Impeller Repair Kit
Installation Direct OEM replacement
Other Technical Attributes Manufactured to OEM specifications in an ISO9002 certified factory

Package Contents

This kit contains the primary components required for a water pump service.

  • 1 x Impeller (6H4-44352-02)
  • 1 x Water Pump Repair Kit (6BG-W0078-00-00)

Note: When purchased as part of the comprehensive Yamaha Maintenance Kit for F50A (1991-2007), the following additional items are included:

  • 2 x Drain Gaskets (90430-08020)
  • 4 x Anodes (PAF4-04070003)
  • 4 x Spark Plugs (NGKDPR6EB-9)
  • 1 x Anode (62Y-11325-00A)
  • 1 x Anode (67C-45251-00A)
  • 1 x Anode (67C-45371-00A)
  • 1 x Anode (688-45251-01A)
  • 1 x Anode (6E0-45251-11A)
  • 1 x Cotter Pin (91490-30025)
  • 1 x Fuel Filter VST (6BG-13915-00)
  • 1 x Fuel Filter (6C5-24251-00)
  • 1 x Fuel Filter (6D8-WS24A-00)
  • 1 x Gasket (PAF15-07010022)
  • 1 x Oil Filter (5GH-13440-60)
  • 1 x O-Ring (PAGB/T3452.1-32.5X1.8)
  • 1 x Thermostat (PAF15-07000031)
  • 1 x Washer (PAF15-04000003)

Installation Guide

  1. Disconnect the negative battery cable and remove the engine cover.
  2. Loosen the bolts securing the lower unit (gearcase) and carefully let it slide down.
  3. Unscrew the bolts on the water pump housing cover to access the impeller.
  4. Take note of the old impeller's vane direction before carefully prying it out.
  5. Clean the housing interior and mating surfaces, removing any old gasket material or debris.
  6. Install the new gasket, wear plate, and impeller, ensuring the impeller key is aligned.
  7. Rotate the driveshaft clockwise while pushing the housing down to seat the impeller vanes correctly.
  8. Secure the housing with its bolts and re-attach the lower unit to the engine.
  9. Once assembled, use a water source (flushing muffs) to test for a strong water stream from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my engine?

A: This kit is specified for Yamaha F50A models from 1991-2007. The best way to ensure compatibility is to verify your original part number against our cross-reference list (6BG-W0078-00-00, 6BG-W0078-01-00). You can also use the official Yamaha guides linked above to identify your exact model and required parts.

Q: What are the signs of a failing water pump impeller?

A: Key symptoms include the engine overheating, a weak or inconsistent water stream from the "tell-tale" outlet, or a melted water pump housing. Upon inspection, a worn impeller may have brittle, cracked, or missing vanes.

Q: How often should I replace the impeller?

A: As a general rule for preventative maintenance, we recommend replacing the impeller every 1 to 2 years or every 100-200 hours of operation. More frequent replacement may be necessary if you operate in sandy, silty, or saltwater conditions.

Q: OEM vs. 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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 65759044634

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 5 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
AV
Massapequa, US
★★★★★ 5
Great to add to your routine without spending big money.
Size: 1 Fl Oz (Pack of 1)
I’ve been using this in my skincare routine for about a month and I love it. It has helped my skin texture and elasticity. It’s also an amazing price. The Good Molecules line is a hidden gem that doesn’t require you to spend an outrageous amount for a serum. Make sure to let it absorb in before you apply the rest of your products, as it takes a minute to dry down. It seems very effective, has brightened my skin, and can be used every night. I’ve had it for about a month and still have half the bottle, so it’s a decent size. My skin was so dry before I started my new routine and I think this serum has helped. The consistency is like a little thicker and will feel a bit tacky after use. I use it after cleansing and before I use my snail mucin serum. Will buy again when I run out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
M
Verified Purchase
Moony Simpkins Rides Again
Houston, US
★★★★★ 5
Great quality, great price.
Size: 1 Fl Oz (Pack of 1)
So far so good. This is my 2nd bottle. I mean, it’s not botox. But it’ll definitely plump and hydrate. I have dry, weird sensitive combination skin (and I’m 39), but this works and I love it as a first step in my rituals. (I also love their caffeine eye cream!)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
B
Verified Purchase
B
Carnegie, US
★★★★★ 5
Amazing Quality, Great Price
Size: 1 Fl Oz (Pack of 1)
This stuff feels amazing. The price is right. I would repurchase this I have used several products from this brand and they have all been a hit. I have very dry, acne prone, sensitive skin- and I can use this AM and PM, under makeup as well!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
N
Verified Purchase
Natalia
Omaha, US
★★★★★ 5
Nice evening serum for dry skin
Size: 1 Fl Oz (Pack of 1), Size: 1 Fl Oz (Pack of 1)
I bought this serum to use in my evening routine, and by morning my skin looks more hydrated and “filled”. The texture is clear and gel-like, very lightweight, spreads easily and absorbs fast without stickiness. After it dries, I apply my night moisturizer on top. In the morning my skin looks softer, smoother and less tired. Big plus for me is how comfortable it feels on the skin, the only small minus is that the bottle is not very big. I think it works especially well for dry or more mature skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
C
Verified Purchase
Christy Lawler
West Palm Beach, US
★★★★★ 5
Helped My Texture & Pores So Much
Size: 2.03 Fl Oz (Pack of 1)
I bought this mainly to help with skin texture and the appearance of my pores, and it has honestly worked really well. After using it consistently, my skin feels noticeably smoother and looks more refined overall. I’ve especially noticed a difference around areas where I tend to have larger pores and uneven texture. My skin looks softer, more even, and makeup applies much more smoothly now. The serum itself feels lightweight, absorbs nicely, and doesn’t leave my skin sticky or greasy. It layers well with the rest of my skincare routine and hasn’t irritated my sensitive skin at all. I also love that the jumbo size lasts a long time, so it feels like a really good value for the amount you get. Definitely happy with this purchase and would repurchase again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026

recommand products