Water Pump Impeller with Key for Evinrude Johnson OMC BRP | JLM Marine

Water Pump Impeller with Key for Evinrude Johnson OMC BRP

This aftermarket water pump impeller is engineered to fit Evinrude Johnson OMC BRP 40HP outboard motors manufactured from 1983 to 1986. Designed to deliver reliable cooling performance, this impeller ensures your engine maintains optimal operating temperatures during operation.

This impeller directly replaces the original factory part, providing a cost-effective solution for routine maintenance or emergency repairs. Each unit is manufactured to OEM specifications in an ISO9002-certified facility.

• Includes impeller with key/pin for secure installation
• Designed for Evinrude Johnson OMC BRP 40HP engines (1983-1986)
• Essential replacement component for water pump maintenance

Compatible Engine Models

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here's a guide to help you identify your engine's serial/model: Johnson/Evinrude Serial Number Guide.

Technical Specifications

Package Contents

• 1 × Outboard Rubber Impeller with Key / Pin

Installation Guide

1. Disconnect the fuel line and remove the lower unit from the outboard motor following your service manual instructions.
2. Remove the water pump housing cover and take note of the impeller's orientation before removal.
3. Extract the old impeller carefully, inspecting the pump housing for debris, corrosion, or wear.
4. Clean the pump housing thoroughly with a suitable cleaner and ensure all surfaces are free of old gasket material.
5. Lubricate the new impeller with water pump grease or dish soap to ease installation and prevent blade damage.
6. Insert the drive key/pin into the impeller hub, ensuring it is properly seated and aligned.
7. Install the new impeller into the housing, rotating it in the correct direction (typically counterclockwise when viewed from above).
8. Replace the housing cover with a new gasket, tightening bolts in a cross pattern to manufacturer torque specifications.
9. Reinstall the lower unit onto the outboard motor, ensuring proper alignment of the driveshaft.
10. Reconnect the fuel line and test the water pump by running the engine with a flushing adapter or in the water.
11. Verify water discharge from the indicator port to confirm proper pump operation.
12. Inspect for leaks around the pump housing and lower unit seal before returning to normal operation.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my 40HP Evinrude Johnson engine?
A: Verify your engine was manufactured between 1983 and 1986 by checking the serial number plate on your outboard. Cross-reference your engine model with the compatibility table above and compare the impeller dimensions with your original part.

Q: How often should I replace my water pump impeller?
A: Most manufacturers recommend replacing the impeller every 2-3 years or 200-300 hours of operation, whichever comes first. If you operate in sandy or debris-filled water, inspect and replace more frequently.

Q: What are the signs that my impeller is failing?
A: Common symptoms include reduced or no water flow from the indicator port, engine overheating, steam from the engine, or loss of power. Inspect the impeller immediately if any of these occur.

Q: Does this impeller come with installation hardware?
A: This package includes the rubber impeller and the drive key/pin. Gaskets, seals, and housing bolts are not included and should be purchased separately or reused if in good condition.

Q: Can I install this impeller myself or do I need a mechanic?
A: Basic mechanical skills and tools are required to remove the lower unit and access the water pump. If you're unfamiliar with outboard service procedures, professional installation is recommended to avoid damage.

Q: What's the difference between OEM and aftermarket impellers?
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.