Mercury Marine Water Pump Impeller Kit 47-19453T – Fits Mercury Mariner Force 4-Stroke 30-60 HP

Mercury Marine Water Pump Impeller Kit 47-19453T – Fits Mercury Mariner Force 4-Stroke 30-60 HP

This water pump impeller repair kit is designed for Mercury Marine 4-Stroke 30-60 HP outboards (1998 and newer), including both EFI and carbureted models. It provides a reliable solution for maintaining your engine’s cooling system.

It serves as a direct replacement for multiple OEM and aftermarket part numbers, ensuring broad compatibility. Please verify your specific engine model and serial number before ordering.

• Engine Compatibility: Fits a wide range of Mercury 30, 40, 50, and 60 HP 4-stroke outboards.
• Installation: Engineered for direct replacement of the original water pump components.
• Kit Contents: Includes impeller, housing, gaskets, seals, and all necessary hardware for a complete overhaul.

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

• 1 x Pump Housing (14334A3)
• 1 x Impeller (47-19453T)
• 1 x Wear Plate (19700A2)
• 1 x Pump Base (46-812966A7)
• 1 x Impeller Key (28-8M0032831)
• 1 x Gasket (27-822189)
• 1 x Gasket (27-19701)
• 1 x Tube Seal (859770/8597701/893857) for 4-stroke models
• 3 x Seal (26-830749)
• 2 x O-Rings (805726)
• 2 x Washer-Plastic (12-858234)
• 4 x Stainless Steel Washers

Installation Guide

Follow these general steps to replace your water pump impeller kit. Always refer to your engine’s service manual for detailed instructions.

1. Disconnect the Battery: Ensure the engine is off and disconnect the negative battery cable for safety.
2. Remove Lower Unit: Unbolt and carefully lower the gearcase assembly. You may need to disconnect the shift linkage.
3. Access the Water Pump: With the lower unit removed, locate and unbolt the water pump housing.
4. Remove Old Components: Remove the old housing, impeller, wear plate, gaskets, and seals. Note the orientation of the old impeller vanes.
5. Clean and Inspect: Thoroughly clean all mating surfaces and inspect the driveshaft for any scoring or damage.
6. Install New Components: Install the new gasket, wear plate, and key. Slide the new impeller onto the driveshaft while turning it in the correct rotational direction.
7. Install New Housing: Lubricate the inside of the new housing and install it over the impeller. Re-install the new seals and gaskets.
8. Reassemble: Bolt the housing down to the specified torque. Reattach the lower unit, ensuring the shift linkage and water tube are properly aligned.
9. Test Operation: Reconnect the battery. Start the engine using a water source (flushing muffs) and verify a steady stream of water from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this fits my engine?
A: Your engine's serial number is the most reliable way to verify fitment. Cross-reference your serial number with the ranges provided in the "Compatible Engine Models" table above. For additional help, use the Mercury Serial Number Guide linked in that section.

Q: What are the common signs of a failing water pump impeller?
A: The most common indicators include the engine overheating at idle or low speeds, and a weak or non-existent water stream from the "tell-tale" outlet. If you notice either of these, inspect your cooling system immediately.

Q: How often should I replace the water pump impeller?
A: For preventative maintenance, it is recommended to replace your impeller every 1-2 years or every 100-200 hours of operation, depending on usage conditions (e.g., saltwater vs. freshwater). Refer to your owner's manual for specific service intervals.

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?

• 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.