Impeller Repair Kit – Fits Johnson, Jabsco, Indmar, Yanmar (Replaces 09-812B-1, 17935-0001-P)

Impeller Repair Kit – Fits Johnson, Jabsco, Indmar, Yanmar (Replaces 09-812B-1, 17935-0001-P)

This impeller repair kit is designed for a wide range of V8 marine engines, providing a direct replacement for failing or worn-out raw sea water pump impellers. It is commonly used in Johnson F6B-9 series pumps found in various applications from 1986 to the present. The kit is also a key service component for many Indmar Monsoon, Hammerhead, and Raptor engines (320–575HP), which are frequently installed in Supra, Moomba, Mastercraft, and Tige towboats.

This kit serves as a direct replacement for several OEM and aftermarket part numbers, ensuring broad compatibility. It is engineered to fit Jabsco raw sea water pumps that require a 12-spline drive impeller with a 2-1/4" (57mm) diameter. Please verify your specific pump model or part number to ensure correct fitment.

• Installation Type: Direct replacement for OEM impellers.
• Core Components: Includes a high-quality neoprene impeller with a durable brass insert.
• Complete Kit: Comes with the necessary O-ring and gasket for a comprehensive 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.

For other models listed, please confirm your engine model/year in the tables below.

Indmar

Boat Applications

Yanmar

Johnson Pumps

Jabsco

Technical Specifications

Package Contents

• 1 x Impeller (Neoprene + Brass) | Replaces: 09-812B-1 / 17935-0001-P
• 1 x O-Ring
• 1 x Gasket

Installation Guide

1. Shut off the engine, allow it to cool, and disconnect the battery for safety.
2. Close the raw water intake seacock to prevent water from entering the vessel.
3. Locate the raw water pump assembly and place a rag or container beneath it to catch spills.
4. Unscrew the bolts on the pump's cover plate and carefully remove the plate.
5. Pry out the old O-ring or gasket and discard it.
6. Using impeller pullers or two pairs of pliers, firmly grip and pull the old impeller straight out of the housing.
7. Clean the interior of the pump housing to remove any old debris or impeller fragments.
8. Lightly lubricate the inside of the housing and the new impeller with a water-based marine lubricant.
9. Insert the new impeller with a twisting motion, ensuring the blades are bent in the direction of engine rotation.
10. Install the new gasket or O-ring, ensuring it is seated correctly.
11. Re-secure the cover plate, tightening the screws in a star pattern to ensure an even seal.
12. Open the seacock, reconnect the battery, start the engine, and immediately check for any water leaks around the pump cover.

Troubleshooting & FAQ

How do I confirm this impeller fits my Indmar engine?

This impeller fits a wide range of Indmar Monsoon, Hammerhead, and Raptor engines (320-575HP) from 1986 to present. It is a direct replacement for Indmar part numbers S685007 and 685007. To be certain, cross-reference your pump or existing impeller part number with the numbers in our cross-reference table and review the compatible models list.

What are the signs my impeller needs replacing?

Common signs of a worn or failing impeller include engine overheating, especially at idle; a noticeably weaker stream of water from the exhaust outlet; or visible cracks, stiffness, or missing blades on the impeller during a visual inspection.

How often should I replace my raw water pump impeller?

For preventative maintenance, we recommend inspecting your impeller annually and replacing it every 1-2 years or every 100-200 hours of operation, whichever comes first. If you frequently operate in sandy or silty water, more frequent replacement may be necessary.

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.