Water Pump Impeller Kit – Fits Mercury/MerCruiser Bravo Drive (Replaces 47-59362T1, 47-593621, 47-59362Q01)

Water Pump Impeller Kit – Fits Mercury/MerCruiser Bravo Drive (Replaces 47-59362T1, 47-593621, 47-59362Q01)

This high-quality aftermarket water pump impeller is designed for Mercury MerCruiser Bravo Drive marine engines, specifically those equipped with engine-mounted sea water pumps featuring a plastic housing, which are typically found in models from 1999 and older. It serves as a reliable replacement for maintaining your engine's cooling system performance.

It is a direct replacement for a wide range of part numbers, ensuring broad compatibility with various engine setups. Please verify your specific part number before ordering.

• Engine Compatibility: Fits MerCruiser Bravo engines (up to 1999) with plastic sea water pump housings.
• Durable Construction: Made from high-strength neoprene rubber with a bonded metal insert to prevent tearing and ensure consistent water flow.
• Purchase Options: Available as a single impeller or as part of a comprehensive water pump assembly kit.

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 Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

This part can be purchased individually or as part of a comprehensive kit.

Option 1: Single Impeller

• 1 x Impeller (Replaces OEM 47-59362T1)

Option 2: Full Water Pump Kit (Replaces OEM 807151A14)

• 1 x WATER PUMP ASSEMBLY (46-807151A1)
• 1 x O-RING (25-33465 / 25-8M0214925)
• 5 x SCREWS, HEX HEAD .312-18 X 3.250 (10-74191 / 8M0204669)
• 2 x SCREWS, HEX HEAD .312-18 X 2.68 (10-807356)
• 5 x WASHERS, .344 X .688 X .065 STAINLESS STEEL (12-814806)
• 1 x IMPELLER (47-59362T1)
• 1 x QUAD RING (25-94288 / 25-8M0215007)
• 1 x WEAR PLATE, OUTER (94576 / 8M0204674)

Installation Guide

1. Safety First: Ensure the engine is completely cool, turned off, and the battery is disconnected.
2. Stop Water Flow: Close the engine's seacock to prevent water from entering the vessel.
3. Access Pump: Locate and access the engine-mounted sea water pump, which has a plastic housing.
4. Remove Cover: Carefully unscrew the bolts holding the pump cover in place and remove the cover.
5. Extract Old Impeller: Take note of the vane direction of the old impeller. Use pliers or an impeller puller tool to remove it.
6. Clean Housing: Thoroughly clean any debris, old gasket material, or sediment from the inside of the pump housing and cover plate.
7. Lubricate: Apply a light coat of water-based marine lubricant or dish soap to the inside of the housing and the new impeller.
8. Insert New Impeller: Install the new impeller with a firm, twisting motion in the direction of engine rotation to bend the vanes correctly.
9. Reassemble: Install the new gasket or O-ring, re-secure the cover plate with the screws, and tighten them to the manufacturer's specified torque.
10. Final Check: Re-open the seacock, reconnect the battery, and start the engine. Immediately check for proper water circulation and inspect for any leaks around the pump housing.

Troubleshooting & FAQ

How do I confirm this impeller fits my MerCruiser Bravo engine?

This impeller is specifically for MerCruiser Bravo Drive engines, generally models up to 1999, that use an engine-mounted sea water pump with a plastic housing. The best way to confirm is to match your existing part number to our cross-reference list, which includes 47-59362T1, 47-59362Q01, and others.

What are the signs of a failing water pump impeller?

The most common signs are the engine running hotter than normal or overheating, and a weak or nonexistent stream of water from the "tell-tale" outlet port. Upon visual inspection, you may see cracked, brittle, or worn-down vanes on the old impeller.

How often should I replace the water pump impeller?

For preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of engine use, whichever occurs first. This helps prevent unexpected failure and potential engine damage from overheating.

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.