Water Pump Impeller – Fits Mercury/Mariner/Force 30-60 HP (Replaces 47-19453T, 47-19453)
This water pump impeller is designed for a wide range of Mercury, Mariner, and Force 30–60 HP outboards, covering various 2-stroke and 4-stroke models manufactured between 1991 and 2019. It ensures reliable engine cooling performance by maintaining proper water circulation.
This component serves as a direct replacement for multiple OEM and aftermarket part numbers, facilitating straightforward maintenance and repairs.
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Material: Constructed from a durable, marine-grade elastomer for longevity and resistance to wear.
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Direct Fit: Engineered to match OEM specifications for easy installation without modifications.
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Package Includes: One high-performance water pump impeller.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
Brand |
Part Number |
Mercury/Mariner |
47-19453T |
Mercury/Mariner |
47-19453 |
Sierra |
18-8900 |
Mallory |
9-45301 |
Mallory |
9-45301-10 |
GLM |
85080 |
Sierra |
18-2011 |
Volvo Penta |
925093 |
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.
Mercury/Mariner
Brand |
Model |
Rated HP |
Stroke |
Years |
OEM Part No. |
Notes |
Mercury |
30 EFI |
30 |
4-Stroke |
2006-2019 |
47-19453T |
3 cylinders |
Mercury |
40 |
40 |
4-Stroke |
2001-2002 |
47-19453T |
4 cylinders |
Mercury |
40 CARB |
40 |
4-Stroke |
2006-2019 |
47-19453T |
3 cylinders |
Mercury |
40 EFI |
40 |
4-Stroke |
2001-2019 |
47-19453T |
3 & 4 cylinders |
Mercury |
40 JET |
40 |
2-Stroke |
1999-2006 |
47-19453T |
3 cylinders |
Mercury |
45 JET |
45 |
2-Stroke |
1991-2004 |
47-19453T |
3 cylinders |
Mercury |
50 |
50 |
2 & 4-Stroke |
1991-2002 |
47-19453T |
Various cylinder configurations |
Mercury |
50 EFI |
50 |
4-Stroke |
2001-2019 |
47-19453T |
4 cylinders |
Mercury |
55 |
55 |
2-Stroke |
1991-2006 |
47-19453T |
3 cylinders |
Mercury |
60 |
60 |
2 & 4-Stroke |
1991-2006 |
47-19453T |
3 & 4 cylinders |
Mercury |
60 BIGFOOT |
60 |
2-Stroke |
1998-2004 |
47-19453T |
3 cylinders |
Mercury |
60 EFI |
60 |
4-Stroke |
2001-2019 |
47-19453T |
4 cylinders |
Force/Chrysler/US Marine
Brand |
Model |
Rated HP |
OEM Part No. |
Force |
Various Models |
30-60 |
47-19453 |
Volvo Penta
Brand |
OEM Part No. |
Notes |
Volvo |
925093 |
Listed as equivalent part |
Technical Specifications
Specification |
Value |
Product Type |
Water Pump Impeller |
Number of Blades |
6 |
Height |
24.60 mm (0.97 in) |
Overall Diameter |
78.31 mm (3.08 in) |
Shaft Diameter |
19.20 mm (0.75 in) |
Inner Diameter |
19.05 mm (0.75 in) |
Outer Diameter |
30.48 mm (1.20 in) |
Material |
Marine-grade elastomer |
Warranty |
Limited Lifetime (Sierra replacement) |
Package Contents
- 1 x Water Pump Impeller (Replaces OEM Part #47-19453T, 47-19453)
Installation Guide
Follow these general steps to replace your water pump impeller. It is always recommended to consult your engine's service manual for detailed instructions specific to your model.
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Disconnect Power: Disconnect the battery before beginning any work.
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Access Lower Unit: Remove the bolts that secure the gearcase (lower unit) to the outboard's leg.
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Separate Lower Unit: Carefully lower the gearcase away from the engine. You may need to disconnect a shift shaft linkage.
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Open Water Pump Housing: Unscrew the bolts on top of the water pump housing and lift it off to expose the impeller.
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Remove Old Impeller: Take note of the original orientation of the impeller vanes. Remove the old impeller and the woodruff key from the driveshaft.
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Clean and Inspect: Clean the inside of the housing and the wear plate. Inspect them for scoring, cracks, or heat damage. Replace if necessary.
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Install New Impeller: Insert the woodruff key into the shaft. Slide the new impeller onto the shaft while turning the driveshaft clockwise to bend the vanes into the correct position within the housing.
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Reassemble Housing: Place the housing back over the impeller and tighten the bolts to the specified torque.
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Reattach Lower Unit: Guide the lower unit back into position, ensuring the driveshaft, water tube, and shift shaft align correctly.
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Secure and Test: Reinstall and tighten the gearcase bolts. Reconnect the battery, supply water to the engine using flushing muffs, and start it to check for a strong, steady stream from the tell-tale outlet.
Troubleshooting & FAQ
Q: How do I confirm this impeller fits my engine?
A: Start by checking the tables above for your engine's brand, model, horsepower, and year range. For Mercury/Mariner owners, we highly recommend using the linked serial number guide to verify your exact model, as specifications can vary even within the same year.
Q: What are the common signs of a failing water pump impeller?
A: The most common indicators include a weak or non-existent water stream from the engine's "tell-tale" outlet, an engine temperature alarm, or the engine overheating, especially at idle or low speeds. Upon inspection, a bad impeller may have cracked, brittle, or missing vanes.
Q: How often should I replace my engine's impeller?
A: As a preventative maintenance measure, we recommend inspecting your impeller annually and replacing it every 1-2 seasons (or every 100-200 hours of use), whichever comes first. This interval can be shorter if you operate in sandy, silty, or saltwater conditions.
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?
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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.