Water Pump Impeller Service Kit – Fits Johnson/Evinrude 85-300 HP V4/V6/V8 (Replaces 5001593, 395864)

Water Pump Impeller Service Kit – Fits Johnson/Evinrude 85-300 HP V4/V6/V8 (Replaces 5001593, 395864)

This water pump impeller service kit is designed for a broad range of Johnson/Evinrude 85-300 HP V4, V6, and V8 engines, covering models from 1979 to 2007, including both 2-Stroke and 4-Stroke variants. It serves as a direct replacement for multiple OEM and aftermarket part numbers, ensuring wide compatibility.

This kit provides a direct replacement for Johnson/Evinrude part numbers 5001593, 435821, 777816, 397131, 435748, 395864, 394534, 391538, and 389289, as well as Sierra part number 18-3059.

• Engineered for a direct fit in the lower gear case for straightforward installation.
• Features a durable neoprene rubber impeller with a high-strength brass hub.
• The kit includes the impeller, pin, O-rings, housing seal, and gasket for a complete service.

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

• 1 x Water Pump Impeller (5001593)
• 1 x Impeller Pin/Key (0331107/331107)
• 1 x O-ring (0331188)
• 1 x O-ring (0302035)
• 1 x Water Pump Housing Seal (0331353)
• 1 x Gasket (324701)

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is securely turned off and tilted up.
2. Drain Gearcase Oil: Place a drain pan under the lower unit and remove the upper (vent) and lower (drain) screws to drain the gear oil.
3. Remove Lower Unit: Remove the bolts connecting the lower unit (gearcase) to the upper engine housing. The number of bolts varies by model.
4. Access the Pump: With the lower unit removed, unbolt and lift the water pump housing to expose the impeller.
5. Remove Old Impeller: Take note of the blade direction. Remove the old impeller, the drive key from the driveshaft, and any old gaskets or O-rings.
6. Clean Surfaces: Thoroughly clean the mating surfaces of the pump housing and wear plate, removing any old gasket material or corrosion.
7. Install New Components: Place the new gasket on the gearcase. Slide the new drive key into the driveshaft.
8. Install New Impeller: Coat the inside of the pump housing with a bit of grease. Slide the new impeller onto the shaft while turning the driveshaft clockwise to bend the blades correctly.
9. Reassemble Pump: Install new O-rings and seals as provided in the kit. Secure the pump housing with its bolts, tightening them to the manufacturer's specified torque.
10. Reinstall Lower Unit: Guide the lower unit back into place, ensuring the driveshaft, shift shaft, and water tube align correctly. Fasten the bolts securely.
11. Refill Oil: Fill the gearcase with new marine gear lubricant through the lower drain hole until it seeps out of the upper vent hole. Re-insert and tighten both screws.
12. Test Operation: Reconnect the battery. Start the engine using a water source (flushing muffs) and check for a strong, steady stream from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my Johnson/Evinrude engine?
A: This kit is designed for a wide range of Johnson/Evinrude V4, V6, and V8 models from 85 to 300 HP (1979-2007). The best way to ensure a match is to compare your engine's model and year against the "Compatible Engine Models" table and verify your existing part number matches one of the cross-references, such as 5001593 or 395864.

Q: What are the signs that my water pump impeller needs to be replaced?
A: Common symptoms of a failing impeller include the engine overheating at idle or low speeds, a weak or inconsistent water stream from the tell-tale outlet, or a complete lack of water flow. During inspection, you may also see visible cracks, stiff or brittle blades, or missing chunks of rubber.

Q: How often should I replace the water pump impeller?
A: For preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of engine use. Replacement frequency should be increased if you primarily operate in saltwater or in water with heavy sediment.

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.