Water Pump Impeller – Fits Mercury/Mercruiser Bravo Sterndrive Engines (Replaces 47-59362T1)

$22.50

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Water Pump Impeller – Fits Mercury/Mercruiser Bravo Sterndrive Engines (Replaces 47-59362T1) is backordered and will ship as soon as it is back in stock.

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Product Details

This high-quality Water Pump Impeller – Fits Mercury/Mercruiser Bravo Sterndrive Engines (Replaces 47-59362T1) is an essential component for maintaining your engine's cooling system. It is specifically designed for Mercruiser Bravo sterndrive engines (4.3L, 5.0L, 5.7L, 7.4L, 502 Mag) from 1999 and older models that are equipped with an engine-mounted sea water pump featuring a plastic housing.

This part serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 47-59362T1, OMC/Johnson/Evinrude 0775517, and Jabsco 17954-0001, ensuring broad interchangeability.

Installs in engine-mounted sea water pumps with plastic housings.
Constructed from durable neoprene rubber with a bonded center insert to resist tearing.
Features 8 flexible vanes designed for optimal performance across a wide range of temperatures.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number
Mercury	47-593621 / 47-59362Q01 / 47-59362T1 / 59362 / 593621 / 59362B1 / 59362Q01 / 59362T1 / 59362A1
OMC / Johnson / Evinrude	0775517
Johnson Pump	09-703B-1
Jabsco	17954-0001
Aftermarket	AM47-59362Q01 / CEF500109 / 18-3087

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Mercruiser owners, please note this impeller fits Bravo sterndrive models up to 1999 that use a plastic sea water pump housing. It is not suitable for models with pump housings made of other materials.

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 Specs

Product Type: Water Pump Impeller
Installation: Engine-mounted sea water pumps with plastic housing
Dimensions: 66.9 mm diameter x 50.9 mm width; 19.3 mm shaft diameter
Material: Neoprene rubber with bonded center insert
Number of Blades: 8
Shaft Style: Keyed Shaft
Key Features: Center insert is bonded to vanes to resist tearing; offers improved flexibility across broad temperature ranges.

What’s in the Box

1 x Water Pump Impeller (Replaces 47-59362T1)

Installation Notes

Disconnect the boat's battery and close the water intake seacock.
Locate the engine-mounted sea water pump. Loosen the hose clamps and detach the inlet and outlet water hoses.
Remove the screws holding the pump housing cover in place and take off the cover.
Grip the hub of the old impeller with pliers or an impeller puller tool and remove it. Note the rotational direction of the existing vanes.
Clean the interior of the pump housing and inspect for any wear or scoring.
Lightly lubricate the new impeller and the inside of the housing with a water-resistant marine grease or dish soap.
Insert the new impeller, bending the vanes in the same direction as the old one.
Re-install the pump cover (with a new gasket, if necessary) and tighten the screws evenly.
Re-attach the water hoses and securely tighten the clamps.
Open the seacock, reconnect the battery, start the engine, and immediately check for any water leaks around the pump housing.

Troubleshooting & FAQ

How do I know if this impeller fits my Mercruiser Bravo engine?

This impeller is designed for Mercruiser Bravo sterndrive engines (4.3L, 5.0L, 5.7L, 7.4L, 502 Mag) manufactured in or before 1999. It is critical that your engine has a sea water pump with a plastic housing, as this part is not compatible with metal pump housings.

What are the signs of a failing water pump impeller?

Common symptoms include the engine overheating at idle or low speeds, a weak or non-existent stream of water from the tell-tale outlet, and, upon inspection, visible damage such as cracks, stiffness, or missing vanes on the old impeller.

How often should I replace my impeller?

As a key part of preventative maintenance, you should inspect your impeller annually and plan to replace it every 100-200 hours of engine use, or whichever comes first. Usage in saltwater or silty/sandy conditions may require more frequent replacement.

Can I install this impeller myself?

Yes, replacing an impeller is a common maintenance task that can be performed by boat owners with basic mechanical skills and the correct tools. However, to avoid the risk of engine damage from improper installation, we recommend professional installation if you are at all unsure.

What is the difference between this impeller and the original Mercury part?

This is a high-quality aftermarket part engineered to meet or exceed original equipment manufacturer (OEM) specifications. It is made from comparable materials, including durable neoprene with a bonded insert, offering reliable performance and longevity at a better value than the OEM 47-59362T1 impeller.

Is this an OEM-certified part?

This listing is for an aftermarket replacement, not an original equipment manufacturer (OEM) component. It is built to OEM-level specifications with comparable materials and is manufactured in an ISO 9002 facility, with batch inspections for quality and consistency.

What are your shipping speed and cost?

We ship worldwide quickly, with typical transit times of 5–15 days for most regions. Standard shipping is free, and expedited options may be available at checkout depending on your location.

What is the warranty and return policy?

This product is covered by a 1-year warranty against manufacturing defects under normal use conditions. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.

Safety & Important Info

Verify images and specifications against your original part before purchase. If anything differs—even if your model appears compatible—do not purchase.
This is an aftermarket replacement component, not an OEM part.
Professional installation is recommended for safety and optimal performance.

About Sea Sierra

Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
Fast Global Fulfillment — Free standard delivery to most regions, typically arriving in 5–15 days.
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