Water Pump Impeller Kit with Housing – Fits Mercury/Mariner 30-70 HP (Replaces 47-89983, 47-89983T)

Water Pump Impeller Kit with Housing – Fits Mercury/Mariner 30-70 HP (Replaces 47-89983, 47-89983T)

This water pump impeller kit with housing is designed for a wide range of Mercury/Mariner 2-stroke and 4-stroke outboard engines from 30 to 70 HP, including 35, 40, 45, 50, 60, and 65 HP models manufactured between the 1970s and 1990s.

It serves as a direct replacement for multiple Mercury and Sierra part numbers, ensuring a precise fit and restoration of your engine's cooling system performance.

• Installation Method: Direct OEM replacement
• Key Components: Complete kit includes housing, impeller, gaskets, and wear plate.
• Engine Compatibility: Fits various 2-stroke and 4-stroke models (see compatibility table for details).

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 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.

Technical Specifications

Package Contents

• 1 x Water Pump Housing
• 1 x Wear Plate
• 1 x Slinger
• 1 x Impeller (47-89983)
• Multiple x Gaskets and O-rings

Explosion Diagram

Installation Guide

1. Disconnect the battery and ensure the engine is off and cool.
2. Remove the lower unit from the outboard motor.
3. Unbolt and remove the old water pump housing.
4. Carefully inspect the area for debris and clean the mating surfaces.
5. Install the new gaskets, wear plate, and impeller from the kit. Ensure the impeller vanes are oriented correctly.
6. Install the new water pump housing and tighten the bolts to the manufacturer's specified torque.
7. Reinstall the lower unit onto the outboard motor.
8. Reconnect the battery and test the engine's cooling system function at a safe location.

Troubleshooting & FAQ

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

A: The best way is to check your engine's serial number against the ranges listed in the "Compatible Engine Models" table. You can also use the Mercury parts catalog link provided to find your specific model diagram and verify the OEM part number is 47-89983 or its equivalent.

Q: What are the signs that my water pump impeller needs replacement?

A: Common signs include the engine overheating, a weak or non-existent water stream from the "telltale" outlet, or visible damage like cracked or brittle impeller vanes upon inspection.

Q: How often should I replace the water pump impeller?

A: For preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1-2 years, or every 100-200 hours of operation, depending on usage conditions (e.g., saltwater vs. freshwater).

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.