Water Pump Rebuild Kit – Fits Johnson/Evinrude 60-75 HP (Replaces 432955, 438597)

Water Pump Rebuild Kit – Fits Johnson/Evinrude 60-75 HP (Replaces 432955, 438597)

This water pump rebuild kit provides all necessary components to restore the cooling system on Johnson/Evinrude 60, 65, 70, and 75 HP 3-cylinder outboard engines. It is designed for models manufactured from 1979 to 2001 and also fits 60-70 HP 4-Stroke engines from 1998 and newer.

This assembly is a direct replacement for multiple OEM and aftermarket part numbers, including Sierra 18-3389, Full Power Plus 432955, WINGOGO 0432955, and JLM Marine 432955.

• Includes a complete housing assembly with a 6-blade impeller for a full system refresh.
• Compatible with both 2-Stroke and 4-Stroke engine types specified in the compatibility list.
• Installs in the lower unit (gearcase) to restore engine cooling performance.

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

This kit includes the following components for a complete rebuild:

• 1 x Water Seal (315748)
• 1 x Insert Cartridge
• 1 x Wear Plate (321940)
• 1 x Water Pump Gasket (336530)
• 1 x Impeller (396725)
• 1 x O-Ring (324981)
• 1 x O-Ring (326649)
• 1 x Pump Housing (435673)
• 1 x Grommet (314008)
• 1 x Key Black (331107)
• 1 x Key White (334897)
• 1 x Damper
• 6 x Bolt (4x 22360, 2x 22320)

Installation Guide

1. Safety First: Disconnect the battery and remove the spark plug wires before starting work.
2. Access the Lower Unit: Remove the bolts securing the lower unit (gearcase) to the engine’s midsection and carefully lower it.
3. Remove Old Pump: Locate and unbolt the water pump housing on top of the gearcase. Remove the housing, impeller, and wear plate.
4. Clean Surfaces: Thoroughly clean the mounting surface on the gearcase and the driveshaft spline area.
5. Install New Components: Place the new wear plate and gasket onto the gearcase. Slide the woodruff key into the driveshaft slot.
6. Install Impeller: Align the new impeller with the key and slide it down. Use a twisting motion in the direction of engine rotation (clockwise) to seat the blades inside the new housing.
7. Secure Housing: Apply a light coat of marine grease to the inside of the housing, then slide it down over the impeller. Secure it with the new bolts and tighten to the manufacturer's torque specifications.
8. Reassemble: Reinstall the lower unit, ensuring the driveshaft, shift shaft, and water tube are correctly aligned. Test the engine with a proper water supply to verify cooling.

Troubleshooting & FAQ

How do I confirm this kit fits my engine?

This kit is designed for Johnson/Evinrude 60-75 HP 3-cylinder engines made between 1979-2001, and 60-70 HP 4-stroke models from 1998 and newer. Please check the "Compatible Engine Models" table to verify your specific model and year.

What are the signs my water pump needs to be replaced?

Common signs of a failing water pump include the engine overheating, a weak or inconsistent water stream from the "telltale" outlet, and visible cracking or damage to the old impeller upon inspection.

How often should I replace my water pump impeller?

For optimal engine protection, it is recommended to inspect the impeller annually and replace the kit every 1-2 years or every 100-200 hours of use, depending on operating conditions (e.g., saltwater vs. freshwater).

OEM vs. Aftermarket?

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.