JMP Marine Flexible Impeller Kit – Fits Jabsco, Detroit Diesel, Volvo Penta, Yanmar (Replaces 17937-0001, 17937-0001P)

JMP Marine Flexible Impeller Kit – Fits Jabsco, Detroit Diesel, Volvo Penta, Yanmar

This JMP Marine flexible impeller kit is engineered for marine engine cooling systems, serving as a direct replacement for various OEM pumps. It is compatible with a wide range of engines from brands including Jabsco, Detroit Diesel, Volvo Penta, and Yanmar.

This kit ensures reliable performance with its durable neoprene construction, designed to meet or exceed OEM specifications for cooling efficiency and longevity. It provides a cost-effective solution for maintaining your vessel's essential systems.

• Material: High-quality Neoprene with a wax branding formulation for durability.
• Drive Type: Features a 12-spline drive brass hub for a secure fit.
• Kit Contents: Includes one impeller, one gasket, and two O-rings for a complete installation.

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.

Detroit Diesel Applications

Volvo Penta Applications

Perkins Applications

Jabsco Pump Applications

Technical Specifications

Package Contents

• 1 x JMP Marine Flexible Impeller #7426-01 (Replaces Jabsco 17937-0001/17937-0001P)
• 1 x Gasket (GAK0016)
• 1 x O-Ring (ORG0013)
• 1 x O-Ring (ORG0071)

Installation Guide

1. Safety First: Ensure the engine is turned off and cooled down. Close the water inlet seacock before beginning.
2. Access the Pump: Locate the sea water pump and remove the cover plate screws.
3. Remove Old Impeller: Carefully remove the old impeller using impeller pullers or two screwdrivers. Note the orientation of the blades.
4. Clean the Housing: Inspect the pump housing for wear, scoring, or debris. Clean it thoroughly.
5. Install New Impeller: Lubricate the new impeller and housing interior with a suitable marine lubricant. Insert the new impeller with a twisting motion, ensuring the blades are bent in the correct direction of rotation.
6. Replace Gasket and Cover: Install the new gasket or O-ring and securely fasten the cover plate.
7. Final Check: Re-open the seacock. Start the engine and check for leaks and proper water flow.

Troubleshooting & FAQ

How do I confirm this impeller kit fits my engine?
First, check the "Part Number Cross-Reference" table to see if your old part number is listed. Second, review the "Compatible Engine Models" tables for your specific brand and model. Finally, compare the "Technical Specifications" (like diameter, width, and shaft type) with your existing impeller to ensure a match.

What is the difference between this impeller and the original OEM one?
This is an aftermarket part designed to meet or exceed OEM specifications. It is made from a high-quality neoprene compound for durability and performance but at a more competitive price point.

How often should I replace my flexible impeller?
For most recreational boats, it is recommended to inspect the impeller annually and replace it every one to two years, regardless of appearance. For commercial or high-hour applications, replacement should occur more frequently, such as every 500-1000 hours of operation.

What are the signs of a failing impeller?
Common signs include engine overheating, reduced water flow from the exhaust, visible cracks or missing pieces on the impeller blades, and a stiff or brittle texture. If you notice any of these, replace the impeller immediately to prevent engine damage.

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.