Water Pump Repair Kit - Fits Johnson/Evinrude 85-300 HP V4/V6/V8 Outboards (Replaces 5001594, 390768)

Water Pump Repair Kit – Fits Johnson/Evinrude 85-300 HP V4/V6/V8 Outboards (Replaces 5001594)

This water pump repair kit is designed for a wide range of Johnson/Evinrude 2-Stroke 85-300 HP V4, V6, and V8 outboard engines from 1979-2006. It provides a reliable solution for maintaining your engine's cooling system. Please note, this kit is not compatible with SL models.

This assembly is a direct replacement for Johnson/Evinrude part number 5001594 and aftermarket parts from Sierra (18-3392), GLM (12102), and Mallory (9-48203).

• Includes a complete set of components for a full repair: impeller, housing, key, gaskets, and o-rings.
• Engineered for direct replacement of the original OEM water pump assembly.
• Constructed from high-quality metal and composite materials for durability and 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 Serial Number Guide.

Technical Specifications

Package Contents

• 1 x Water Pump Kit Assembly (5001594) including:
• 1 x Impeller
• 1 x Housing
• 1 x Key
• Multiple gaskets and o-rings
• 1 x Tapered rubber seal

Installation Guide

1. Disconnect the negative battery cable and ensure the engine is off and cool.
2. Place a drain pan under the lower unit and remove the gearcase drain/fill screws to empty the lubricant.
3. Remove the bolts securing the lower unit (gearcase) to the outboard's driveshaft housing.
4. Carefully lower and separate the gearcase from the rest of the motor.
5. Unbolt and remove the old water pump housing to access the impeller.
6. Clean the mounting surfaces and inspect the driveshaft for wear or damage.
7. Install the new key, gaskets, impeller, and housing components from the kit. Ensure the impeller vanes are oriented correctly.
8. Secure the new housing assembly, torquing the bolts to the manufacturer's specification.
9. Re-install the lower unit, ensuring the driveshaft, shift shaft, and water tube are properly aligned.
10. Refill the gearcase with the recommended lubricant.
11. Reconnect the battery, start the engine, and immediately check for a steady water stream from the cooling system's tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my engine?
A: This kit is designed for most Johnson/Evinrude 85-300 HP V4, V6, and V8 outboards manufactured between 1979 and 2006. To ensure a correct fit, please carefully review the "Compatible Engine Models" table above and cross-reference your OEM part number (5001594). Note: This kit is not compatible with SL models.

Q: What are the signs my water pump is failing and needs replacement?
A: Common signs of a failing water pump include the engine overheating, a weak or inconsistent stream of water from the "tell-tale" outlet, or finding cracked/missing vanes on the old impeller during a physical inspection.

Q: How often should I replace my water pump impeller?
A: For optimal engine protection, we recommend inspecting the water pump and impeller annually and planning a full replacement every 1-2 years. If you operate primarily in saltwater or areas with high levels of sand or silt, more frequent replacement may be necessary.

Q: What is the difference between an OEM part and this aftermarket kit?
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 ISO9001-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.