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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