Flexible Impeller Kit – Fits Jabsco/Johnson 1210-0001 / 09-1027B (Replaces Volvo Penta 21951346, 3862281, 3858256)

Flexible Impeller Kit – Replaces Jabsco 1210-0001, Johnson 09-1027B, Volvo Penta 21951346

This water pump impeller kit is an essential component for marine inboard engines that use a raw water cooling system. It serves as a direct replacement for a wide range of OEM part numbers from leading brands including Jabsco, Johnson, Volvo Penta, Yanmar, Onan, and Perkins.

Designed for reliability and performance, this kit ensures your engine maintains optimal operating temperature by efficiently pumping raw water. It replaces Jabsco 1210-0001/1210-0001-P, Johnson 09-1027B/09-1027B-1, and Volvo Penta 21951346/3862281/3858256 among others.

• Installation Type: Direct replacement for specified OEM parts.
• Included Components: The kit contains a neoprene impeller, plus the necessary gaskets and O-rings for a complete installation.
• Material: Constructed from a durable neoprene rubber compound for longevity and performance in marine environments.

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.

Volvo Penta Applications

Yanmar Applications

Onan/Perkins Applications

Technical Specifications

Package Contents

• 1 x Flexible Impeller (Replaces Jabsco 1210-0001, Johnson 09-1027B)
• 1 x O-Ring
• 4 x Gasket

Installation Guide

1. Safety First: Shut off the engine completely and close the raw water intake seacock.
2. Access the Pump: Locate the raw water pump on your engine. Place a rag or container beneath it to catch any water spillage.
3. Remove Cover: Unscrew and remove the pump's cover plate. Take note of which way the old impeller's blades are bent.
4. Extract Old Impeller: Use needle-nose pliers or a dedicated impeller puller tool to carefully remove the old impeller from the housing.
5. Clean and Inspect: Clean any debris or old gasket material from the pump housing and the cover plate. Inspect the surfaces for scoring or wear.
6. Install New Seals: Place the new gaskets or O-rings (as required by your pump model) from the kit onto the housing.
7. Insert New Impeller: Lightly lubricate the new impeller with a water-based lubricant. Insert it into the housing with a twisting motion, ensuring you bend the blades in the same direction as the old one.
8. Secure Cover: Re-attach the cover plate and tighten the screws in an even, crisscross pattern to ensure a good seal. Do not overtighten.
9. Final Checks: Open the raw water seacock. Start the engine and immediately check the pump and exhaust for proper water flow and look for any leaks around the cover plate.

Troubleshooting & FAQ

Q: How do I confirm this fits my engine?
A: To ensure compatibility, please check the Part Number Cross-Reference table and the Compatible Engine Models list on this page. Matching your engine model or an OEM part number is the best way to confirm fitment.

Q: What are the signs of a failing impeller?
A: The most common signs are engine overheating, a noticeable reduction in water flow from the exhaust outlet, and, upon inspection, visible cracks, stiffness, or missing blades on the impeller itself.

Q: How often should I replace the impeller?
A: As a general rule, impellers should be inspected annually and replaced every one to two years or every 100-200 hours of engine operation. This interval can be shorter in water with high levels of sand or 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.