SKU: 6819761470

Water Pump Impeller Kit – Fits Johnson/Evinrude 35–60 HP (Replaces 439077, 396933)

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Description

Water Pump Impeller Kit – Fits Johnson/Evinrude 35–60 HP (Replaces 439077, 396933)Water Pump Impeller Kit Fits Johnson Evinrude 3560 HP (Replaces 439077, 396933) This comprehensive water pump impeller repair kit is designed for Johnson Evinrude 2 stroke outboard engines ranging from 35 to 60 HP, covering models from 1979 to 1994. Please refer to the detailed compatibility list to ensure a precise fit for your specific engine model and year. This kit serves as a direct replacement for Johnson Evinrude part numbers 439077, 396933,

Water Pump Impeller Kit – Fits Johnson/Evinrude 35–60 HP (Replaces 439077, 396933)

This comprehensive water pump impeller repair kit is designed for Johnson/Evinrude 2-stroke outboard engines ranging from 35 to 60 HP, covering models from 1979 to 1994. Please refer to the detailed compatibility list to ensure a precise fit for your specific engine model and year.

This kit serves as a direct replacement for Johnson/Evinrude part numbers 439077, 396933, 390770, 396932, 391635, 777808; Sierra 18-3399; and Mallory 9-48204, 9-48207.

  • Features a high-performance 6-blade neoprene rubber impeller for efficient water flow.
  • Includes a marine-grade, corrosion-resistant metal alloy housing for durability.
  • Engineered for direct replacement of the original OEM components for a straightforward installation.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Johnson/Evinrude 439077
Johnson/Evinrude 396933
Johnson/Evinrude 390770
Johnson/Evinrude 396932
Johnson/Evinrude 391635
Johnson/Evinrude 777808
Sierra 18-3399
Mallory 9-48204
Mallory 9-48207

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.

Brand Rated HP Stroke Years OEM Part No. Notes
Johnson/Evinrude 35 2-Stroke 1986–1987 439077
Johnson/Evinrude 40 2-Stroke 1984–1988 439077 Not for models with Lever Operated Gas Assist Tilt
Johnson/Evinrude 45 2-Stroke 1986–1994 439077
Johnson/Evinrude 45 Commercial 2-Stroke 1986–1988, 1990–1994 439077
Johnson/Evinrude 48 2-Stroke 1987–1988 439077
Johnson/Evinrude 50 2-Stroke 1979–1988 439077 Not for models with Lever Operated Gas Assist Tilt
Johnson/Evinrude 55 2-Stroke 1979–1981, 1983–1984, 1986–1994 439077
Johnson/Evinrude 55 Commercial 2-Stroke 1986–1988, 1990–1994 439077
Johnson/Evinrude 60 2-Stroke 1979–1988 439077 Not for models with Lever Operated Gas Assist Tilt

Technical Specifications

Specification Value
Product Type Water Pump Impeller Service Kit with Housing
Installation Direct OEM replacement
Housing Material Marine-grade metal alloy, corrosion resistant
Housing Color Silver/Gray
Other Technical Attributes High-performance neoprene rubber impeller with 6 blades

Package Contents

  • 1 x Water Pump Housing (384087)
  • 1 x Impeller (396809)
  • 1 x Wear Plate (320981)
  • 1 x Gasket (336530)
  • 1 x O-Ring (303059)
  • 1 x Grommet (315837)
  • 2 x Screw, Short (319126)
  • 2 x Screw, Long (909533)
  • 1 x Seal (315748)

Installation Guide

  1. Safety First: Disconnect the negative battery terminal to prevent accidental starting.
  2. Access the Pump: Shift the outboard into neutral and remove the bolts securing the lower unit (gearcase) to the engine. Carefully lower and remove the unit.
  3. Remove the Old Pump: Locate the water pump assembly on top of the gearcase. Unscrew the bolts holding the pump housing in place and lift it off.
  4. Disassemble: Remove the old impeller, wear plate, gaskets, and O-rings. Note the orientation of the impeller vanes; new vanes should curve opposite to the direction of driveshaft rotation.
  5. Clean Surfaces: Thoroughly clean the mating surfaces on the gearcase and inside the housing to ensure a perfect seal. Remove any old gasket material or sealant.
  6. Install New Components: Place the new wear plate and gasket onto the gearcase. Apply a light coat of marine grease to the new impeller and slide it onto the driveshaft, turning the shaft in its normal rotational direction to bend the vanes correctly.
  7. Reassemble Pump: Install the new O-ring into its groove on the housing. Carefully slide the housing down over the impeller, ensuring it seats correctly. Secure with the provided screws and tighten to the manufacturer's torque specification.
  8. Reinstall Lower Unit: Guide the lower unit back into position, ensuring the driveshaft, shift shaft, and water tube align correctly. Reinstall and tighten the mounting bolts.
  9. Test Operation: Reconnect the battery. Start the engine in a test tank or with a water flusher attached. Confirm there is a strong, steady stream of water exiting the tell-tale port.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my specific engine?

A: First, verify your engine's horsepower, model, and year fall within the ranges listed in the "Compatible Engine Models" table. It is critical to also check the notes for your specific model. For the 40 HP, 50 HP, and 60 HP models, this kit does not fit engines equipped with a "Lever Operated Gas Assist Tilt" system.

Q: What are the common signs that my water pump impeller is failing?

A: The most common indicators of a worn or failed impeller are engine overheating, an alarm sounding (if equipped), or a weak or completely absent stream of water from the tell-tale outlet on the side of the engine. Upon visual inspection, a failing impeller may have cracked, brittle, or missing vanes.

Q: How often should I replace my impeller as part of regular maintenance?

A: As a general rule for preventative maintenance, we recommend replacing the water pump impeller and gaskets every 1 to 2 years, or every 100-200 hours of operation. Replacement frequency should be increased if the boat is operated in saltwater or in water with high levels of sand or silt.

Q: OEM vs. Aftermarket?

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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 6819761470

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