Water Pump Impeller – Fits Mercury/Mariner 40-60 HP (Replaces 47-19453T)
Water Pump Impeller – Fits Mercury/Mariner 40-60 HP (Replaces 47-19453T) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Water Pump Impeller – Fits Mercury/Mariner 40-60 HP (Replaces 47-19...
Water Pump Impeller – Fits Mercury/Mariner 40-60 HP (Replaces 47-19453T) is backordered and will ship as soon as it is back in stock.
Product Details
This replacement Water Pump Impeller – Fits Mercury 40/50/60 HP 4-Stroke EFI Outboards (Replaces 47-19453T) is designed for Mercury and Mariner 4-stroke EFI outboards from 40 to 60 HP (4-cylinder models), covering years from the late 1990s through current production runs. It ensures your engine’s cooling system operates reliably.
It serves as a direct replacement for Mercury part numbers 19453, 19453T, and 47-19453T, and interchanges with aftermarket references AMKITMER50 and HJB-P-890.
- Engineered for direct-fit installation.
- Constructed from durable, high-strength rubber for longevity.
- Features a 6-blade design for optimal water flow.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 19453 |
| Mercury | 19453T |
| Mercury | 47-19453T |
| Aftermarket | AMKITMER50 |
| Aftermarket | HJB-P-890 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury/Mariner Outboards: This impeller fits a range of 40-60 HP 4-stroke models with a standard gearcase. Please verify your specific model and year against the OEM part number.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Mercury | 4-Stroke EFI (4 Cyl) | 40 | 4-Stroke | 47-19453T | Standard gearcase |
| Mercury | 4-Stroke Carb (3 Cyl) | 40 | 4-Stroke | 47-19453T | Standard gearcase |
| Mercury | 4-Stroke (4 Cyl) | 40 | 4-Stroke | 47-19453T | Standard gearcase |
| Mercury | 4-Stroke EFI (4 Cyl) | 50 | 4-Stroke | 47-19453T | Standard gearcase |
| Mercury | 4-Stroke | 50 | 4-Stroke | 47-19453T | Standard gearcase |
| Mercury | 4-Stroke EFI (4 Cyl) | 60 | 4-Stroke | 47-19453T | Standard gearcase |
| Mercury | 4-Stroke (4 Cyl) | 60 | 4-Stroke | 47-19453T | Standard gearcase |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Direct Replacement
- Connection
- Drive Shaft Spline
- Housing Material
- Rubber
- Housing Color
- Black
- Dimensions
- (A) 19.25 mm x (B) 78.2 mm x (C) 25.15 mm
- Fitting Type
- Internal Spline Mount
- Other Technical Attributes
- 6 Blades
What’s in the Box
- 1 x Water Pump Impeller (47-19453T)
Installation Notes
- Disconnect the battery and ignition system for safety.
- Unbolt and carefully lower the outboard's lower unit (gearcase) to access the water pump.
- Remove the bolts securing the water pump housing cover.
- Slide the old impeller off the drive shaft, noting its orientation. Clean any debris from the housing.
- Lightly lubricate the new impeller with marine grease and slide it onto the drive shaft, rotating in the direction of engine operation to bend the vanes correctly.
- Re-install the water pump housing and torque its bolts to manufacturer specifications.
- Re-attach the lower unit, ensuring all connections (shift linkage, drive shaft) are properly aligned.
- Once assembled, start the engine in a water supply and verify a steady stream of water from the tell-tale outlet.
Troubleshooting & FAQ
How do I confirm this impeller fits my specific engine?
The best method is to cross-reference your engine's original part number. This impeller replaces Mercury part 47-19453T. Also, check the Engine & Model Compatibility table on this page to see if your model, HP, and stroke type are listed.
What are the signs of a failing water pump impeller?
Common symptoms include a weak or non-existent water stream from the "tell-tale" outlet, engine overheating alarms, and reduced engine performance. Visually, a worn impeller may have cracked, brittle, or missing vanes.
How often should I replace my impeller?
As a general maintenance item, most manufacturers recommend replacing the water pump impeller every 1-2 years or every 100-200 hours of operation, whichever comes first. This interval can be shorter if you operate in sandy or silty water.
Is any special grease or sealant needed for installation?
Yes, it's highly recommended to apply a light coat of marine-grade (2-4-C) grease to the inside of the pump housing and to the impeller vanes. This helps with initial startup lubrication and eases installation. Do not use heavy or non-marine grease.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and 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 in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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