Water Pump Impeller – Fits Mercury/Mercruiser Bravo Sterndrive Engines (Replaces 47-59362T1)
This aftermarket water pump impeller is designed for Mercruiser Bravo sterndrive engines (4.3L, 5.0L, 5.7L, 7.4L, 502 Mag) from models up to 1999. It specifically fits engines equipped with an engine-mounted sea water pump that has a plastic housing.
This component is a direct replacement for a wide range of OEM and aftermarket part numbers, ensuring broad compatibility for the specified engine models.
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Material: High-durability neoprene rubber with a bonded center insert to resist tearing.
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Blade Design: Features 8 flexible vanes for efficient water flow across a broad range of temperatures.
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Installation Profile: Fits engine-mounted sea water pumps with plastic housings.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
Brand |
Part Number |
Mercury |
47-593621 |
Mercury |
47-59362Q01 |
Mercury |
47-59362T1 |
Mercury |
59362 |
Mercury |
593621 |
Mercury |
59362B1 |
Mercury |
59362Q01 |
Mercury |
59362T1 |
Mercury |
59362A1 |
OMC/Johnson/Evinrude |
0775517 |
Johnson Pump |
09-703B-1 |
Jabsco |
17954-0001 |
Aftermarket |
AM47-59362Q01 |
Aftermarket |
CEF500109 |
Aftermarket |
18-3087 |
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.
Brand |
Model |
Rated HP |
Stroke |
Years |
OEM Part No. |
Notes |
Mercruiser |
4.3L Carb/EFI (Bravo) |
Various |
4-Stroke |
Up to 1999 |
47-59362T1 |
Requires plastic pump housing |
Mercruiser |
5.0L Carb/EFI (Bravo) |
Various |
4-Stroke |
Up to 1999 |
47-59362T1 |
Requires plastic pump housing |
Mercruiser |
5.7L Carb/EFI (Bravo) |
Various |
4-Stroke |
Up to 1999 |
47-59362T1 |
Requires plastic pump housing |
Mercruiser |
350 Mag EFI (Bravo) |
Various |
4-Stroke |
Up to 1999 |
47-59362T1 |
Requires plastic pump housing |
Mercruiser |
7.4L Carb/EFI (Bravo) |
Various |
4-Stroke |
Up to 1999 |
47-59362T1 |
Requires plastic pump housing |
Mercruiser |
454 Mag Carb/EFI (Bravo) |
Various |
4-Stroke |
Up to 1999 |
47-59362T1 |
Requires plastic pump housing |
Mercruiser |
502 Mag Carb/EFI (Bravo) |
Various |
4-Stroke |
Up to 1999 |
47-59362T1 |
Requires plastic pump housing |
Technical Specifications
Specification |
Value |
Product Type |
Water Pump Impeller |
Installation |
Engine-mounted sea water pumps with plastic housing |
Dimensions |
66.9 mm diameter x 50.9 mm width |
Shaft Diameter |
19.3 mm |
Material |
Neoprene rubber with bonded center insert |
Number of Blades |
8 |
Shaft Key |
Yes |
Other Technical Attributes |
Center insert bonded to vanes to resist tearing loose; improved flexibility across broad temperature ranges |
Package Contents
- 1 x Water Pump Impeller (47-59362T1)
Installation Guide
- Disconnect the boat's battery terminals.
- Close the engine's seacock and drain the sea water pump housing.
- Loosen and remove the serpentine belt from the pump pulley.
- Carefully detach the water hoses from the pump body. Note their positions.
- Unbolt and remove the sea water pump assembly from the engine bracket.
- Remove the pump's rear cover plate screws and the cover.
- Carefully pry out the old impeller using pliers. Note the orientation of the vanes.
- Thoroughly clean the interior of the impeller housing and the cover plate surface.
- Lightly lubricate the new impeller and housing interior with a water-resistant marine grease.
- Install the new impeller, rotating the shaft in the direction of engine operation to bend the vanes correctly.
- Reinstall the cover plate and gasket, reattach the pump assembly, hoses, and serpentine belt.
- Reconnect the battery, open the seacock, start the engine, and immediately check for water leaks and proper water circulation.
Troubleshooting & FAQ
How do I confirm this impeller fits my Bravo sterndrive?
This impeller fits Mercruiser Bravo models up to 1999 that use an engine-mounted sea water pump with a plastic housing. Please check your engine's year and pump housing type. You can also cross-reference your existing part number with the numbers listed in our Part Number Cross-Reference table.
What are the signs of a failing water pump impeller?
Common signs include engine overheating at idle or low speeds, a weak or no water stream from the tell-tale outlet, and visible cracks, stiffness, or missing blades on the impeller upon inspection.
How often should I replace my water pump impeller?
For preventative maintenance, we recommend inspecting the impeller annually and replacing it every 1-2 years or every 100-200 hours of operation, depending on usage conditions (e.g., saltwater vs. freshwater).
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?
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Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
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Fast Global Shipping: Free delivery worldwide in 5–15 days.
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Direct from Manufacturer: Competitive pricing without compromising quality.