Flexible Impeller – Fits JABSCO 22405-0001 Water Pumps (Replaces Johnson 09-808B, Volvo Penta 3586496)

Flexible Impeller – Fits JABSCO 22405-0001 Water Pumps (Replaces Johnson 09-808B, Volvo Penta 3586496)

This is a direct replacement flexible water pump impeller for various marine engines, including models from Jabsco, Johnson, Volvo Penta, Westerbeke, and Onan. It is engineered for raw water cooling systems, featuring a durable neoprene construction with a solid brass insert for reliable performance. The design specifies a 12mm (15/32") shaft diameter with a slotted pin drive configuration.

This impeller directly replaces Jabsco 22405-0001-P, Johnson 09-808B/09-808B-1, Volvo Penta 3586496/875583-7, Sierra 18-3076, and others, making it a versatile choice for maintaining your engine's cooling system.

• Material: High-quality neoprene for flexibility and longevity
• Drive Type: Slotted Shaft Pin Drive
• Dimensions: 40mm external diameter, 19mm width

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.

For all other models, please confirm your engine or pump model in the tables below.

Technical Specifications

Package Contents

• 1 x Flexible Water Pump Impeller
• Note: Gasket or sealing components are not included with this impeller.

Installation Guide

1. Turn off the engine and allow it to cool completely. Close the raw water intake seacock.
2. Place a collection pan under the pump to catch any spilled coolant.
3. Loosen and remove the screws on the water pump cover plate.
4. Carefully remove the old cover plate gasket and discard it.
5. Use needle-nose pliers or an impeller puller tool to grip the hub of the old impeller and slide it out.
6. Clean the interior of the pump housing, ensuring no old blade pieces remain. Inspect the housing for scoring or cracks.
7. Lightly lubricate the new impeller with a water-based lubricant (glycerin or dish soap). Do not use petroleum-based grease.
8. Install the new impeller by pushing it into the housing while turning it in the direction of engine rotation. The blades should curve correctly.
9. Install a new gasket (not included) and the cover plate. Tighten the screws in a star pattern to ensure an even seal.
10. Open the seacock and start the engine. Check for leaks around the pump cover and verify a steady stream of water from the exhaust.

Troubleshooting & FAQ

How can I confirm this impeller fits my pump?

Check your pump's model number or the part number stamped on your existing impeller. Cross-reference these with the numbers in our "Part Number Cross-Reference" and "Compatible Engine Models" tables. It is also critical to verify the dimensions: a 12mm shaft diameter, 40mm external diameter, and 19mm height.

How often should I replace my water pump impeller?

For most marine engines, it's recommended to inspect the impeller annually and replace it every 1-2 years or every 200-300 hours of use, whichever comes first. Operation in sandy or silty water may require more frequent replacement.

What are the signs of a failing impeller?

Common signs include the engine running at a higher-than-normal temperature, reduced water flow from the exhaust outlet, visible cracks or missing blades on the impeller, and a stiff or brittle texture when removed.

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.