396809 777214 Water Pump Impeller for Johnson Evinrude OMC BRP | JLM Marine

Water Pump Impeller 396809 777214 – Fits Johnson Evinrude OMC BRP 2-Stroke 35–55 HP Outboards

This aftermarket water pump impeller is engineered for Johnson Evinrude OMC BRP 2-stroke outboard engines ranging from 35 HP to 55 HP. Designed to deliver reliable cooling performance, this 6-blade rubber impeller ensures proper water flow through your outboard's cooling system, helping prevent overheating and engine damage.

This impeller directly replaces OEM part numbers 396809 and 777214, as well as aftermarket equivalents from Sierra (18-3368), CEF (500346), and Mallory (9-45208). It is a drop-in replacement for a wide range of mid-power Johnson and Evinrude outboards manufactured from the mid-1980s through the late 1990s.

• Complete impeller assembly includes rubber impeller with drive key/pin
• Precision-molded 6-blade design for optimal water circulation
• Compatible with Johnson Evinrude 2-stroke outboards from 1986–1999

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.

Technical Specifications

Package Contents

• Outboard Rubber Impeller with Drive Key / Pin

Installation Guide

1. Disconnect the fuel line and remove the engine cowling to access the lower unit. Tilt or remove the outboard as needed for easier access to the water pump housing.
2. Remove the lower unit by loosening the mounting bolts and disconnecting the shift linkage. Carefully slide the lower unit away from the midsection.
3. Locate the water pump housing on the lower unit and remove the retaining screws or bolts. Lift off the pump housing cover to expose the old impeller.
4. Remove the old impeller by gently pulling it straight off the drive shaft. Inspect the impeller for wear, cracks, or missing blades.
5. Clean the pump housing and base plate thoroughly, removing any debris, old gasket material, or corrosion. Ensure all surfaces are smooth and free of damage.
6. Lubricate the new impeller blades with water pump grease or mild soapy water to ease installation and protect the rubber during initial startup.
7. Install the drive key/pin into the impeller hub, ensuring it is seated securely in the keyway. Align the impeller with the drive shaft.
8. Slide the new impeller onto the drive shaft, rotating it gently to align the key with the shaft slot. Push firmly until the impeller is fully seated against the base plate.
9. Reinstall the pump housing cover with a new gasket or O-ring (if applicable), aligning all bolt holes. Tighten screws evenly in a cross pattern to the manufacturer's torque specification.
10. Reattach the lower unit to the midsection, reconnecting the shift linkage and tightening all mounting bolts securely. Verify that the shift mechanism operates smoothly.
11. Refill the lower unit gear oil if it was drained during disassembly, and check for proper fluid level. Reinstall the engine cowling and reconnect the fuel line.
12. Test the cooling system by running the engine in a test tank or on-water, observing strong water flow from the tell-tale indicator. Check for leaks around the pump housing.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Johnson or Evinrude outboard?
A: Check the compatibility table above for your engine's horsepower and model year. Verify that your original impeller matches the dimensions listed (6 blades, 69.39 mm outer diameter, 16.10 mm hub diameter) and cross-reference your OEM part number (396809 or 777214). If your model is listed but dimensions differ, do not proceed with the purchase.

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 frequently operate in sandy, silty, or debris-laden water, inspect and replace the impeller annually to prevent cooling system failure.

Q: What are the signs that my impeller is failing?
A: Common symptoms include weak or no water flow from the tell-tale (pee hole), engine overheating, steam from the powerhead, or reduced performance. Inspect the impeller immediately if you notice cracked, missing, or bent blades, or if the engine temperature gauge reads higher than normal.

Q: Can I reuse the old impeller drive key, or must I use the new one included?
A: Always install the new drive key/pin included with this kit. Old keys can become worn, corroded, or slightly deformed, which may cause the impeller to slip on the shaft or fail to drive properly, leading to inadequate cooling.

Q: Do I need to replace any gaskets or seals when installing this impeller?
A: Yes, it is highly recommended to replace the water pump housing gasket, base plate seal, and any O-rings during impeller replacement. While this kit includes the impeller and key, gaskets are typically sold separately; consult your engine's service manual or parts diagram for the complete rebuild kit.

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.