SKU: 69990204265

Water Pump Impeller Kit – Fits Mercury/Mariner/Honda 40-300 HP (Replaces 47-43026Q06)

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Description

Water Pump Impeller Kit – Fits Mercury/Mariner/Honda 40-300 HP (Replaces 47-43026Q06)Water Pump Impeller Kit Fits Mercury Mariner Honda 40 300 HP (Replaces 47 43026Q06) This water pump impeller service kit provides a reliable solution for maintaining the cooling system on a wide range of Mercury, Mariner, and Honda outboard engines, as well as Mercury Alpha One Gen 2 sterndrives. It is designed to meet or exceed OEM specifications for fit and performance, ensuring proper water circulation to prevent engine overheating. Engineered as a

Water Pump Impeller Kit – Fits Mercury/Mariner/Honda 40-300 HP (Replaces 47-43026Q06)

This water pump impeller service kit provides a reliable solution for maintaining the cooling system on a wide range of Mercury, Mariner, and Honda outboard engines, as well as Mercury Alpha One Gen 2 sterndrives. It is designed to meet or exceed OEM specifications for fit and performance, ensuring proper water circulation to prevent engine overheating.

Engineered as a direct replacement for multiple part numbers, this kit simplifies sourcing and installation. It is suitable for various 2-stroke and 4-stroke models from 40 HP up to 300 HP.

  • Direct Replacement: Installs using existing hardware and connections with no modifications required.
  • Complete Service Kit: Includes the impeller, wear plate, gaskets, seals, and o-rings necessary for a full service.
  • Durable Construction: Features a 6-blade impeller designed for efficient water flow and long service life.

Part Number Cross-Reference

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

Brand Part Number
Mercury/Mariner 47-43026Q06
Mercury/Mariner 47-43026K06
Sierra 18-3214
GLM 12043
Honda 19021-ZW1-003
Honda 06192-ZW1-305

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Confirm your engine model/year in the table below.

Mercury/Mariner Outboard Models

Brand Model Rated HP Stroke Years OEM Part No. Notes
Mercury 75-115 75-115 4-Stroke Serial number 0A996142 and above 47-43026Q06
Mercury 70-90 70-90 2-Stroke Serial number 0A996142 and above 47-43026Q06
Mercury 100-125 100-125 2-Stroke 4 cylinder models having pump cover screws without insulators 47-43026Q06
Mercury V-200/V-225/V-250 200-250 2-Stroke 3.0L motors 47-43026Q06
Mercury F40-F60 40-60 4-Stroke Bigfoot/Command Thrust models 47-43026Q06
Mercury 60 Bigfoot 60 2-Stroke Serial number 0D000750 and above 47-43026Q06
Mercury Alpha One Gen 2 N/A N/A Serial number OD469859 and up (1991 and newer) 47-43026Q06 Sterndrive application

Honda Outboard Models

Brand Model Rated HP Stroke Years OEM Part No.
Honda BF75AW, BF75AT 75 4-Stroke 1996-1998 19021-ZW1-003
Honda BF90AW, BF90AT 90 4-Stroke 1996-1998 19021-ZW1-003/06192-ZW1-305

Technical Specifications

Specification Value
Product Type Water Pump Impeller Kit
Installation Direct replacement
Dimensions Impeller diameter: 88 mm, Width: 32 mm, Shaft size: 22 mm
Fitting Type Keyway
Number of Blades 6

Package Contents

  • 1 x Water Pump Impeller (47-43026T2)
  • 1 x Coupling Assembly (816597A1) - For 1991 and up models, S/N OD469859 and up
  • 1 x Wear Plate (817276-1)
  • 1 x Gasket (27-43033-1)
  • 1 x O-Ring (25-21836)
  • 1 x Seal (26-816575A2)
  • 1 x Gasket (27-817277)

Installation Guide

  1. Safety First: Disconnect the negative battery cable before starting work.
  2. Access the Pump: Remove the lower unit (gearcase) from the outboard motor.
  3. Disassemble: Carefully unbolt and remove the old water pump housing assembly. Note the order of the components.
  4. Remove Old Parts: Take out the old impeller, keyway, wear plate, gaskets, and seals.
  5. Clean Surfaces: Thoroughly clean all mating surfaces, removing any old gasket material or corrosion.
  6. Install New Components: Place the new gasket and wear plate onto the gearcase. Insert the new keyway into the driveshaft.
  7. Install Impeller: Slide the new impeller onto the driveshaft, turning it clockwise to bend the vanes correctly.
  8. Reassemble Housing: Install the new seal in the housing, place the housing over the impeller, and fasten it with the bolts.
  9. Torque Bolts: Tighten the housing bolts to the manufacturer's recommended torque specifications.
  10. Reinstall Lower Unit: Reattach the lower unit to the outboard motor.
  11. Test Operation: Reconnect the battery. Start the engine using a water supply (flushing muffs) and check for a steady water stream from the tell-tale outlet.

Troubleshooting & FAQ

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

A: The most reliable method is to check your engine's model, horsepower, and serial number against the detailed compatibility tables on this page. This kit is a direct replacement for several OEM part numbers, including Mercury/Mariner 47-43026Q06 and Honda 19021-ZW1-003. For Mercury owners, our linked serial number guide can help you verify your model.

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

A: The most common symptom of a bad impeller is engine overheating, often indicated by a warning alarm or gauge. Other signs include a weak or no water stream from the engine's "tell-tale" outlet, or an impeller that appears brittle, cracked, or has melted vanes upon inspection.

Q: How often should the impeller be replaced?

A: As a general maintenance rule, it is recommended to inspect the impeller annually and replace it every 1 to 2 years, or after every 100-200 hours of operation. Replacement frequency may depend on usage conditions, such as operating in saltwater or sandy/silty water, which can accelerate wear.

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: 69990204265

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KBL
Louisville, US
★★★★★ 5
Great Product
Style: Updated Formula
I will purchase this again. very gentle on the skin and moisturizes.
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Reviewed in the United States on February 14, 2026
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JR
Grantham, US
★★★★★ 4
Like it but expensive
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I like it. It does what it says. I just don’t like the price.
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Reviewed in the United States on May 16, 2026
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Kira Krall
Birmingham, US
★★★★★ 5
returned- for now
Style: Updated Formula
I was using the lotion version of this for about a year, then went to the balm for more hydration. However, it seems to be breaking me out. I think because it's spring, im not needing as much occlusion as i did during winter. I'm gonna go back to the lotion formula, then pick this up again next winter. It is a little hard to spread, but I spray the avene mineral water on, let it dry slightly, and press the balm into my skin when its still wet. That helps thin the balm just enough to rub in. Otherwise, it can actually feel kind of rough!
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Reviewed in the United States on April 2, 2026
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tortoisegirl
Natrona Heights, US
★★★★★ 5
Impressive
Style: Updated Formula
Nice thick cream! I even saw results (skin improvement) within days. I like this way better than their Cicalfate+, as it’s easier to rub in, less greasy, and doesn’t have the water vs cream separation issue. I’m not a huge fan of the pump top for this one, but at least it’s a tube instead of a solid canister (where you can’t see how much is left or get to the last bit).
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Reviewed in the United States on February 26, 2026
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Jj
Phoenix, US
★★★★★ 3
Not Hydrating Enough
Style: Updated Formula
Non greasy but is not moisturizing enough for my dry eczema prone skin.
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Reviewed in the United States on May 23, 2026

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