Flexible Impeller – Fits Johnson Water Pump F7 (Replaces 09-1028B-9)

Flexible Impeller – Fits Johnson Water Pump F7 (Replaces 09-1028B-9)

This flexible impeller is engineered for engine cooling systems, specifically designed for the Johnson F7 series water pumps. Made from a durable, oil-resistant nitrile compound, it provides reliable performance and longevity in marine environments. The design features a 12-spline drive for a secure fit and efficient operation.

This component serves as a direct replacement for a wide range of OEM and aftermarket part numbers, ensuring broad compatibility with multiple engine and pump configurations. It is crucial to cross-reference your existing part number to confirm fitment before ordering.

• Material: Oil-Resistant Nitrile Rubber
• Drive Type: 12 Spline Drive
• Installation: Direct replacement for compatible models

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.

Compatible Pump Models

Technical Specifications

Package Contents

• 1 x Flexible Impeller
• 1 x Gasket
• 1 x O-Ring

Installation Guide

1. Shut off the engine and close the raw water intake valve (seacock).
2. Locate the sea water pump housing and remove the screws on the cover plate.
3. Gently pry off the cover. Be prepared for some water to spill out.
4. Using needle-nose pliers or a dedicated impeller puller, remove the old impeller. Note the orientation of the blades for reinstallation.
5. Clean any debris or old gasket material from the housing and cover plate. Inspect the housing for scoring or wear.
6. Lightly lubricate the interior of the housing and the new impeller with water-resistant grease or dish soap.
7. Install the new impeller by pushing it into the housing while twisting in the direction of engine rotation. Ensure the blades are curved correctly.
8. Place the new gasket or O-ring onto the housing and reinstall the cover plate, tightening the screws in a star pattern to ensure an even seal.
9. Open the seacock, start the engine, and immediately check the pump and exhaust for proper water flow and leaks.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my engine?

A: The most reliable method is to match the part number from your old impeller or service manual to our cross-reference list. Additionally, compare the specifications—especially Diameter (65 mm), Width (50.2 mm), and Drive Type (12 Spline)—with your current part.

Q: What are the signs of a failing impeller?

A: Common symptoms include the engine running hotter than normal, a noticeable reduction in water flowing from the exhaust outlet, or visible signs of damage on the old impeller, such as cracked, stiff, or missing blades.

Q: How often should I replace my engine's impeller?

A: For optimal engine protection, we recommend inspecting your impeller annually and replacing it every one to two years. If you operate in silty or sandy water, more frequent replacement may be necessary.

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.