SKU: 6889569705

Water Pump Impeller Kit – Fits Mercury Mariner Force 30-70 HP 4-Stroke (Replaces 47-812966A11, 47-812966A12)

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Description

Water Pump Impeller Kit – Fits Mercury Mariner Force 30-70 HP 4-Stroke (Replaces 47-812966A11, 47-812966A12)Water Pump Impeller Kit Fits Mercury Mariner Force 30 70 HP 4 Stroke (Replaces 47 812966A11, 47 812966A12) This water pump impeller repair kit is designed for Mercury, Mariner, and Force 30 70 HP 4 stroke outboard engines (1998present) that have a gearcase torpedo diameter of 3. 44 inches (87. 38mm). Please verify this critical dimension before ordering to ensure correct fitment. It serves as a direct replacement for multiple OEM and aftermarket part

Water Pump Impeller Kit – Fits Mercury Mariner Force 30-70 HP 4-Stroke (Replaces 47-812966A11, 47-812966A12)

This water pump impeller repair kit is designed for Mercury, Mariner, and Force 30-70 HP 4-stroke outboard engines (1998–present) that have a gearcase torpedo diameter of 3.44 inches (87.38mm). Please verify this critical dimension before ordering to ensure correct fitment.

It serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 47-812966A11, 47-812966A12, 46-812966A4, 46-812966A5, 46-812966A6, 46-14334A1, 46-14334A2, 46-14334A3, and Sierra 18-3690.

  • Engine Fitment: Mercury/Mariner/Force 30-70 HP 4-Stroke (1998+) with a 3.44" torpedo diameter.
  • Durable Construction: Features a high-performance neoprene rubber impeller, stainless steel wear plate and housing, and robust gaskets and O-rings for longevity.
  • Complete Kit: Includes all necessary components for a full water pump rebuild, including the impeller, housing, plates, gaskets, seals, and hardware.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Mercury 47-812966A11, 47-812966A12
Mercury 46-812966A4, 46-812966A5, 46-812966A6
Mercury 46-14334A1, 46-14334A2, 46-14334A3
Sierra 18-3690

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.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Mercury Driveshaft-Long-2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 Carb 3 CYL [1B227000-1B344306]
Mercury Driveshaft-Long-2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI 3 CYL [1B227000-1B355027]
Mercury Driveshaft-1.83:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI 4 CYL [0T409000-1B355222]
Mercury Driveshaft-1.83:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI 4 CYL [1C000001-1C050251]
Mercury Driveshaft-1.83:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI 4 CYL [1C050252 & Up]
Mercury Driveshaft-1.83:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI Jet 4 CYL [1C051324 & Up]
Mercury Driveshaft-1.83:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI SeaPro 4 CYL [1C453840 & Up]
Mercury Driveshaft-1.83:1 Gear Ratio 50 4-Stroke 1998–present 46-812966A12 EFI 4 CYL [0P153500-0P580772] (Belgium)
Mercury Driveshaft-1.83:1 Gear Ratio 50 4-Stroke 1998–present 46-812966A12 EFI 4 CYL [0T409000-1B355222]
Mercury Driveshaft-1.83:1 Gear Ratio 50 4-Stroke 1998–present 46-812966A12 EFI 4 CYL [1C000001 & Up]
Mercury Driveshaft-1.83:1 Gear Ratio 60 4-Stroke 1998–present 46-812966A12 EFI 4 CYL [0P153500-0P580772] (Belgium)
Mercury Driveshaft-1.83:1 Gear Ratio 60 4-Stroke 1998–present 46-812966A12 EFI 4 CYL [0T409000-1B355222]
Mercury Driveshaft-1.83:1 Gear Ratio 60 4-Stroke 1998–present 46-812966A12 EFI 4 CYL [1C000001-1C453839]
Mercury Driveshaft-1.83:1 Gear Ratio 60 4-Stroke 1998–present 46-812966A12 EFI SeaPro 4 CYL [1C453840 & Up]
Mercury Driveshaft-1.83:1 Gear Ratio 60 4-Stroke 1998–present 46-812966A12 Formula 60 [1C104574-1C782687]
Mercury Gear Housing Driveshaft 2:1 Gear Ratio 30 4-Stroke 1998–present 46-812966A12 [1C456300 & Up]
Mercury Gear Housing Driveshaft 2:1 Gear Ratio 30 4-Stroke 1998–present 46-812966A12 EFI [1C109093-1C456299]
Mercury Gear Housing Driveshaft 2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 [1C018826 & Up]
Mercury Gear Housing Driveshaft 2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI [1C043417-1C456299]
Mercury Gear Housing Driveshaft 2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI [1C049739 & Up]
Mercury Gear Housing Driveshaft 2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI [1C456300 & Up]
Mercury Gear Housing Driveshaft Long 2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 [0P401000 & Up]
Mercury Gear Housing Driveshaft Long 2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 [1B227000-1B344306]
Mercury Gear Housing Driveshaft Long 2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 [1C000001-1C018825]
Mercury Gear Housing Driveshaft Long 2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI [0P401000-0P515896]
Mercury Gear Housing Driveshaft Long 2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI [1B227000-1B355027]
Mercury Gear Housing Driveshaft Long 2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI [1C000001-1C043416]
Mercury Gear Housing Driveshaft Long 2:1 Gear Ratio 40 4-Stroke 1998–present 46-812966A12 EFI [1C000001-1C049738]
Mariner Outboard 30-70 4-Stroke 1998–present 46-812966A12 Same part fits equivalent Mariner models
Force Outboard 30-70 4-Stroke 1998–present 46-812966A12 Same part fits equivalent Force models

Technical Specifications

Specification Value
Product Type Water Pump Impeller Kit
Installation Direct replacement, fits models with torpedo diameter 3.44" (87.38mm)
Housing Material Neoprene Rubber Impeller and O-rings, Stainless Steel Plate and Housing
Housing Color Black (impeller), Silver (stainless components)
Dimensions Kit components vary; see Package Contents
Weight 0.65 kg (1.43 lbs)
Warranty 30-day refund/replacement
Important Fitment Note This repair kit is easily confused with similar horsepower models. Verify torpedo diameter before ordering.

Package Contents

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

Installation Guide

  1. Disconnect the battery and shift the outboard gear into neutral.
  2. Remove the lower unit (gearcase) by unbolting it from the engine's mid-section.
  3. Locate and unbolt the water pump housing to access the old impeller.
  4. Carefully remove the old impeller, key, gaskets, and wear plate. Clean all mating surfaces thoroughly.
  5. Install the new lower gasket and stainless steel wear plate onto the pump base.
  6. Insert the new impeller key into the slot on the driveshaft.
  7. Slide the new impeller onto the driveshaft. Rotate the driveshaft clockwise while pushing down to seat the impeller vanes correctly inside the housing.
  8. Install the new upper gasket, seals, and O-rings onto the pump housing.
  9. Secure the pump housing with the bolts, tightening them to the manufacturer-specified torque in a crisscross pattern.
  10. Reinstall the lower unit, making sure the driveshaft, shift shaft, and water tube are correctly aligned.
  11. Reconnect the battery. Start the engine in a suitable water source and immediately check for a steady stream of water from the tell-tale outlet.

Troubleshooting & FAQ

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

A: The most critical step is to verify your lower unit's torpedo diameter is 3.44 inches (87.38mm). This kit is often confused with others for similar HP engines. Cross-reference the OEM part numbers listed and check the serial number ranges in our compatibility table to ensure a perfect match.

Q: What are the signs my water pump impeller needs replacement?

A: Common signs that your impeller is failing include a weak or non-existent water stream from the "tell-tale" pisser port, a steadily rising engine temperature gauge at idle or low speeds, or a low water pressure alarm if your engine is equipped with one.

Q: How often should I replace the water pump impeller?

A: For preventative maintenance, it is recommended to inspect and/or replace your water pump impeller every 100-200 operating hours or at least once per season, whichever comes first. This helps prevent overheating and costly engine damage.

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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 6889569705

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Bret BigDawg
Carnegie, US
★★★★★ 5
Well made, sturdy, and work great!
Work great for our KEF bookshelf speakers, would definitely buy again!
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Reviewed in the United States on April 28, 2026
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Verified Purchase
Colby D. May
Battle Creek, US
★★★★★ 4
Almost perfect, absolutely fit for purpose, and a great value
Size: Standard--black
These are really, really close to being five stars, but because of my OCD tendencies when it comes to things being true and level, I can only go four. The way these mounts are made, speakers rest inside and on the inner surface of the L-shaped adjustable side brackets, and not on the large metal plate between them. Leveling on the fore-and-aft plane can easily be handled via the adjustment nut on the bottom of the bracket. But there is no provision for side-to-side leveling, so if the manufacturing of the side brackets is not within tolerance, you'll wind up with a speaker that's ever-so-slightly wonky...which is the case with ONE of my mounts. The bubble is still between the lines, but it's kissing the left line. Most would not care about this, and I'm not too bummed about it, but I am able to see that much out-of-true with the naked eye. It's not enough to pursue any kind of remediation, because the value on these really is awfully good. They are solidly built, easy to install, and easy to adjust. The manufacturer is apparently improving the product as they go based on feedback, as some issues that have vexed other owners have not been a problem for me, such as the wall plates being or coming loose (the design now ensures they stay put once pushed back to the wall), or the adjustment nut and bolt rotating freely and not staying tight (the ones on mine are great and function as intended). For the price, these are really hard to beat, and I have a feeling all the mounts like this with the different oddly-named brands are made in the same factory. That being the case, get the cheapest ones, and the day I bought mine, these were those.
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Reviewed in the United States on September 15, 2025
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Verified Purchase
Seth Johnson
Boise, US
★★★★★ 5
Solid and easy to install
Size: Standard--black
These are nice, solid wall mounts. They assembled quickly and easily, and they can hold larger bookshelf speakers like my Cambridge Soundworks M60s. Adjusting the plate to match speaker size is pretty easy, and they seem to grip the speaker tight enough that they won't fall off. The tilt option is very useful and a good feature when speakers are mounted high and need to tilt down toward the listener. Just remember to tighten the bolt on the bottom once you've positioned it where you want it. I would definitely recommend these to anyone looking for solid, well priced speaker mounts.
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Reviewed in the United States on March 30, 2025
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Mark K
West Palm Beach, US
★★★★★ 5
Well made. Easy install.
Size: Standard--black, Size: Standard--black
These were easy to install. All the hardware was included. They look good. Seems well made.
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Reviewed in the United States on March 4, 2026
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Optionado
Whiting, US
★★★★★ 5
Sturdy solution
Size: Standard--black
I needed a way to mount rear speakers and this was the solution. They're sturdy and adjustable to fit reasonably sized speakers. They also pivot up and down and swivel so really perfect.
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Reviewed in the United States on April 18, 2026

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