Water Pump Repair Kit – Fits Mercury/Mariner 30-60 HP 4-Stroke Outboards (Replaces 46-812966A12)

Water Pump Repair Kit – Fits Mercury/Mariner 30-60 HP 4-Stroke Outboards (Replaces 46-812966A12)

This water pump repair kit is designed for a wide range of Mercury/Mariner 30-60 HP 4-Stroke outboard engines (1999-2012+), including EFI, JET, SeaPro, Carb, and BIGFOOT models. It also fits select Force 70-75 HP outboard engines (1991-1998).

This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury/Mariner 46-812966A12, 812966A11, 812966A4, 812966A5, 14334A1, 14334A2, 14334A3, Sierra 18-3324, and Quicksilver 812966A12, ensuring broad compatibility for your maintenance needs.

• Complete Kit: Includes a new impeller, housing, faceplate, gaskets, and all necessary hardware for a full replacement.
• Direct Fit: Engineered for direct OEM replacement, simplifying installation.
• Specific Application: Designed for models using a 1.83:1 ratio gearcase.

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.

For Force engines, confirm your engine model/year in the table below.

Mercury Marine

Force

Technical Specifications

Package Contents

• 1 x Impeller (47-19453T)
• 1 x Faceplate (19700A2)
• 1 x Base (46-812966A7)
• 1 x Housing (14334A3)
• 1 x Guide Tube/Coupler (859770/8597701/893857)
• 1 x Gasket Upper (27-822189)
• 1 x Gasket Lower (27-19701)
• 1 x Impeller Key
• 1 x O-Ring
• 11 x Small Washers

Installation Guide

Professional installation is recommended. The general steps are as follows:

1. Safety First: Disconnect the battery and ensure the engine is securely mounted.
2. Drain Gearcase Oil: Place a drain pan under the lower unit and remove the drain/fill screws to drain the gear oil.
3. Remove Lower Unit: Unbolt the lower unit (gearcase) from the upper engine housing. This may require disconnecting the shift linkage.
4. Disassemble Water Pump: With the lower unit removed, unbolt and remove the existing water pump housing to access the impeller.
5. Inspect & Clean: Clean the pump base and housing surfaces, removing any old gasket material or debris. Inspect for scoring or damage.
6. Install New Parts: Install the new gaskets, faceplate, impeller (ensure the key is in place), and housing from the kit. Lightly grease the interior of the housing.
7. Reassemble: Reinstall the water pump housing, ensuring bolts are tightened to the manufacturer's specified torque.
8. Reattach Lower Unit: Reconnect the shift linkage and bolt the lower unit back onto the engine.
9. Refill Gearcase: Fill the gearcase with the correct type and amount of new gear oil.
10. Test Operation: Reconnect the battery. Start the engine using a water supply (flushing muffs) and check for a steady stream of water from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my specific engine?

A: The best way is to verify your engine's model, year, and serial number against the compatibility tables on this page. Also, cross-reference your existing part number with those listed in our "Part Number Cross-Reference" section. If you are unsure, please contact our support team with your engine details before ordering.

Q: What are the common signs that a water pump or impeller needs to be replaced?

A: The most common signs include the engine overheating at idle or low speeds, and a weak or non-existent stream of water from the "tell-tale" outlet. We recommend replacing the impeller as part of regular preventative maintenance every 1-2 years, depending on usage.

Q: Is there a difference between the 3-cylinder and 4-cylinder versions for the 40-60 HP models?

A: Yes, there can be differences in the gearcase and other components. This kit is specified to fit both, but it's crucial to check your engine's serial number and original part number to ensure this is the correct kit for your configuration, especially with BIGFOOT models which have a different gearcase.

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.