395864 397131 435821 Water Pump Impeller for Johnson Evinrude | JLM Marine

Water Pump Impeller 395864 397131 435821 – Fits Johnson Evinrude 85-300 HP Outboards

This water pump impeller is designed for Johnson and Evinrude outboard motors ranging from 85 HP to 300 HP, covering V4, V6, and V8 engines from 1979 and up. It provides reliable cooling system performance across a wide range of models including FICHT and Commercial editions, as well as SEA DRIVES.

This impeller directly replaces OMC part numbers 395864, 397131, 435821, 435748, and 5001593, ensuring broad compatibility with your existing water pump assembly.

• Complete impeller assembly with key/pin included for immediate installation
• Compatible with multiple engine configurations: V4, V6, and V8 powerheads
• Fits both standard and long-shaft (25") models across several decades

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 Johnson/Evinrude owners, here's a guide to help you identify your engine's serial/model: Johnson/Evinrude Serial Number Guide.

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 according to your service manual.
2. Remove the water pump housing cover and carefully extract the old impeller. Note the orientation of the impeller blades.
3. Inspect the impeller housing and plate for wear, scoring, or debris; clean thoroughly before proceeding.
4. Lubricate the new impeller with water pump grease or soapy water to ease installation.
5. Insert the drive key/pin into the impeller shaft slot, ensuring it sits flush and secure.
6. Install the new impeller into the housing, rotating it gently in the correct direction to fold the blades properly.
7. Align the impeller with the driveshaft and ensure the key/pin engages correctly.
8. Reinstall the water pump housing cover and gasket, torquing bolts to manufacturer specifications.
9. Reattach the lower unit to the motor, ensuring proper alignment of the driveshaft.
10. Reconnect the fuel line and refill the lower unit gear oil if it was drained.
11. Start the engine in a test tank or on the water and verify steady water flow from the tell-tale outlet.
12. Inspect for leaks around the pump housing and check engine temperature after a short run.

Troubleshooting & FAQ

How do I confirm this impeller fits my engine?
Cross-reference your engine's horsepower, year, and configuration (V4/V6/V8) with the compatibility table above. Also verify your original impeller's OEM part number matches one of the listed replacements: 395864, 397131, 435821, 435748, or 5001593.

How often should I replace the water pump impeller?
Most manufacturers recommend replacing the impeller every 2–3 years or 200–300 hours of operation, whichever comes first. If you notice overheating, reduced water flow from the tell-tale, or visible blade damage, replace it immediately.

What are the signs of impeller failure?
Common symptoms include engine overheating, weak or no water stream from the tell-tale, steam from the engine, or an audible high-temperature alarm. Inspect the impeller for cracked, broken, or worn blades during routine maintenance.

Will this impeller work on both FICHT and non-FICHT engines?
Yes, this impeller is compatible with both FICHT fuel-injected models (1995 and up) and carbureted engines, as long as the horsepower and year match the compatibility chart.

Can I install this impeller myself or do I need a mechanic?
If you have basic mechanical skills and the proper tools, you can replace the impeller yourself by following the installation steps and your engine's service manual. However, professional installation is recommended to ensure correct alignment and torque specifications.

OEM vs. Aftermarket – what's the difference?
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.

How fast do you ship and how much does it cost?
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.

What is your warranty and return policy?
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.