Rubber Impeller for Evinrude Johnson | JLM Marine

Rubber Impeller for Evinrude Johnson Outboard Motors

This high-quality rubber impeller is designed to fit Evinrude and Johnson outboard motors ranging from 20 HP to 35 HP, covering model years from the late 1970s through the early 2000s. Engineered to maintain optimal water flow through your engine's cooling system, this impeller ensures reliable performance and protection against overheating.

This aftermarket replacement impeller is built to OEM specifications and provides a direct fit for the models listed below. Whether you're performing routine maintenance or replacing a worn impeller, this component delivers dependable cooling performance for your marine outboard motor.

• 6-blade design for efficient water pumping
• Includes key/pin for secure installation
• Precision-molded rubber construction for durability and long service life

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. Preparation: Disconnect the fuel line and remove the lower unit from the outboard motor according to your engine's service manual.
2. Access the Water Pump: Remove the water pump housing cover to expose the existing impeller.
3. Remove Old Impeller: Carefully pull out the old impeller and key/pin from the driveshaft. Inspect the housing for debris or damage.
4. Clean the Housing: Thoroughly clean the pump housing and plate to remove any residue, corrosion, or old gasket material.
5. Lubricate New Impeller: Apply a thin coat of glycerin, soapy water, or water pump grease to the new impeller blades for easier installation and initial priming.
6. Install Key/Pin: Insert the key or pin into the driveshaft slot as specified in your engine manual.
7. Install Impeller: Slide the new impeller onto the driveshaft, rotating it gently to align the blades in the correct direction (check your service manual for rotation direction).
8. Reassemble Pump Housing: Replace the pump housing cover, base plate, and gaskets, ensuring all components are seated correctly.
9. Reinstall Lower Unit: Reattach the lower unit to the outboard motor and secure all fasteners to the manufacturer's torque specifications.
10. Reconnect Fuel Line: Reconnect the fuel line and any other hoses or cables that were disconnected.
11. Test Water Flow: Start the engine in a test tank or on muffs and verify strong, steady water flow from the telltale (pee hole).
12. Final Inspection: Check for leaks around the water pump housing and confirm normal operating temperature before returning to regular use.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my engine?
A: Cross-reference your engine's brand, horsepower, and year with the compatibility table above. For additional confirmation, consult the serial number guide linked in the Compatible Engine Models section or compare the technical specifications (shaft size, diameter, blade count) to your original impeller.

Q: How often should I replace the impeller?
A: Most manufacturers recommend replacing the impeller annually or every 200–300 operating hours, whichever comes first. If you notice reduced water flow, overheating, or visible cracks and missing blade tips, replace it immediately.

Q: What are the signs of a failing impeller?
A: Common symptoms include weak or no water discharge from the telltale, engine overheating, steam from the cooling system, or reduced performance. Inspect the impeller regularly, especially if the boat has been stored or run in sandy/debris-filled water.

Q: Can I install this impeller myself, or do I need a mechanic?
A: While many boat owners with mechanical experience can replace an impeller using the installation steps above, professional installation is recommended if you're unfamiliar with lower unit disassembly or if you lack the proper tools and torque specifications.

Q: Is this an OEM part or an aftermarket replacement?
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.