Rubber Impeller for Johnson Evinrude | JLM Marine

Rubber Impeller for Johnson Evinrude Outboard Motors – Fits 2-Stroke 20–35 HP (1978 & Up)

This aftermarket rubber impeller is designed to fit a wide range of Johnson Evinrude 2-stroke outboard motors from 20 HP to 35 HP, covering model years from 1978 and up. Engineered with neoprene and brass construction, this impeller ensures reliable water pump performance and engine cooling for your marine outboard.

This impeller serves as a direct replacement for original Johnson Evinrude water pump impellers, restoring proper cooling system function and preventing engine overheating.

• Includes impeller with key/pin for complete installation
• Precision-molded 6-blade neoprene design with brass insert for durability
• Critical maintenance component for reliable outboard performance

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 Serial Number Guide.

Technical Specifications

Package Contents

Your package includes:

• 1 × Outboard Rubber Impeller with Key / Pin

Installation Guide

1. Disconnect the spark plug wire to ensure the engine cannot start during installation.
2. Remove the lower unit from the outboard motor following your engine's service manual procedures.
3. Access the water pump housing by removing the mounting bolts and separating the pump cover.
4. Extract the old impeller carefully, noting the orientation of the blades (they should curve in the direction of rotation).
5. Clean the pump housing thoroughly, removing any debris, old gasket material, or corrosion buildup.
6. Lubricate the new impeller with water pump grease or dishwashing liquid to ease installation and prevent dry-start damage.
7. Install the key/pin into the impeller hub, ensuring it seats properly in the drive shaft slot.
8. Insert the impeller into the housing, carefully folding the blades in the correct rotational direction as you slide it down.
9. Reassemble the water pump cover and housing, using new gaskets and O-rings where applicable.
10. Reinstall the lower unit onto the motor, torquing all fasteners to manufacturer specifications.
11. Reconnect the spark plug wire and run the engine in a test tank or on-water to confirm proper water flow.
12. Check for leaks around the pump housing and verify that cooling water is discharging from the tell-tale indicator.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Johnson or Evinrude outboard?
A: Cross-reference your engine's horsepower, year, and stroke type with the compatibility table above. If your motor is a 2-stroke model between 20–35 HP manufactured from 1978 onward (specific years vary by HP), this impeller should fit. Always compare the physical dimensions with your original impeller to ensure a proper match.

Q: How often should I replace my outboard impeller?
A: Most manufacturers recommend replacing the water pump impeller annually or every 100–300 hours of operation, whichever comes first. If you notice reduced water flow from the tell-tale, overheating, or visible cracking/missing blades, replace it immediately.

Q: What are the signs that my impeller is failing?
A: Common symptoms include weak or no water discharge from the tell-tale hole, engine overheating, steam from the engine, or loss of power. Inspect the impeller if you experience any of these issues, as a damaged impeller can lead to serious engine damage.

Q: Can I install this impeller myself, or do I need a professional?
A: If you have basic mechanical skills and the proper tools, you can replace the impeller yourself by following your engine's service manual. However, if you're unfamiliar with lower unit removal or water pump disassembly, we recommend professional installation 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.