Water Pump Repair Kit – Fits Mercury/Mariner 75-115 HP Outboards (Replaces 8M0113799, 43024A7)
Water Pump Repair Kit – Fits Mercury/Mariner 75-115 HP Outboards (Replaces 8M0113799, 43024A7) is backordered and will ship as soon as it is back in stock.
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Water Pump Repair Kit – Fits Mercury/Mariner 75-115 HP Outboards (R...
Water Pump Repair Kit – Fits Mercury/Mariner 75-115 HP Outboards (Replaces 8M0113799, 43024A7) is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Repair Kit is designed for a broad range of Mercury and Mariner 2-stroke and 4-stroke outboards, primarily fitting 75-115 HP models. It also effectively services select 60, 65, 70, 80, 90, 100, and 125 HP engines within the specified serial number ranges listed in the compatibility tables.
It functions as a direct interchange for Mercury OEM part numbers 46-8M0113799, 46-43024A7, 43024A4, 43024A5, 43024A6, 43026T9, and Sierra 18-3688.
- Engineered as a direct replacement part for straightforward installation.
- Features a durable neoprene impeller and stainless steel housing for longevity.
- Provides all essential components needed for a complete water pump overhaul.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 46-8M0113799 |
| Mercury | 46-43024A7 |
| Mercury | 43024A4 |
| Mercury | 43024A5 |
| Mercury | 43024A6 |
| Mercury | 43026T9 |
| Sierra | 18-3688 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury/Mariner engines, verify your model and serial number range to ensure correct fitment.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | Bigfoot | 60 | 2-Stroke | 0D000750 & up | 46-8M0113799 | |
| Mercury | Jet | 65 | 2-Stroke | 0D283222 & up | 46-8M0113799 | |
| Mercury | 3 Cylinder | 70 | 2-Stroke | 0A996142-0C221999 | 46-8M0113799 | |
| Mercury | 3 Cylinder | 75 | 2-Stroke | 0C222000 & up | 46-8M0113799 | |
| Mercury | 3 Cylinder | 80 | 2-Stroke | 0A996142-0C221999 | 46-8M0113799 | |
| Mercury | Jet | 80 | 2-Stroke | 0D283222 & up | 46-8M0113799 | |
| Mercury | 3 Cylinder | 90 | 2-Stroke | 0A996142 & up | 46-8M0113799 | |
| Mercury | 4 Cylinder | 100 | 2-Stroke | 0B209468 & up | 46-8M0113799 | |
| Mercury | 3 Cylinder | 115 | 2-Stroke | 0T801000 & up | 46-8M0113799 | |
| Mercury | 4 Cylinder | 115 | 2-Stroke | 0C100000 & up | 46-8M0113799 | |
| Mercury | 4 Cylinder | 125 | 2-Stroke | 0D283222 & up | 46-8M0113799 |
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | Bigfoot EFI | 60 | 4-Stroke | 0T409000 & up | 46-8M0113799 | 996cc |
| Mercury | FourStroke | 75 | 4-Stroke | 0G960500-1B366822 | 46-8M0113799 | 1596cc |
| Mercury | FourStroke | 75 | 4-Stroke | 1B366823-2B094995 | 46-8M0113799 | 1731cc |
| Mercury | FourStroke | 90 | 4-Stroke | 0G960500-1B366822 | 46-8M0113799 | 1596cc |
| Mercury | FourStroke | 90 | 4-Stroke | 1B366823-2B094995 | 46-8M0113799 | 1731cc |
| Mercury | FourStroke | 115 | 4-Stroke | 0T178500-1B366822 | 46-8M0113799 | 1741cc |
| Mercury | FourStroke | 115 | 4-Stroke | 1B366823-2B094995 | 46-8M0113799 | 1731cc |
Technical Specs
- Product Type
- Water Pump Impeller Repair Kit
- Installation
- Direct replacement
- Housing Material
- Stainless steel plate and housing
- Housing Color
- Silver/metallic
- Weight
- 720 g (1.59 lbs)
- Other Technical Attributes
- Neoprene impeller, non-asbestos gasket, nylon PA66 tube
What’s in the Box
- 1 x Water Pump Impeller (46-43024A7)
- 1 x Wear Plate
- 1 x Drive Key
- 1 x Pump Cover
- 4 x Screws
- 1 x Housing
- 2 x Seals
- Gaskets
Installation Notes
- Disconnect the battery and remove the engine cover.
- Drain the gearcase lubricant completely.
- Remove the lower unit (gearcase) from the outboard by unfastening the mounting bolts.
- Unbolt and remove the old water pump housing assembly.
- Carefully remove the old impeller, drive key, wear plate, and gaskets.
- Thoroughly clean all mating surfaces, ensuring they are free of old gasket material and corrosion.
- Install the new wear plate, gaskets, and seals as provided in the kit.
- Slide the new impeller onto the driveshaft with the new key, rotating the shaft clockwise to set the vanes correctly.
- Install the new housing and tighten bolts to the manufacturer's specified torque.
- Reinstall the lower unit and refill with fresh, manufacturer-recommended gearcase lubricant.
- Reconnect the battery and test the engine in the water, verifying a steady water stream from the tell-tale outlet.
Troubleshooting & FAQ
Which specific Mercury/Mariner engines does this kit fit?
This kit is designed for a variety of 2-stroke and 4-stroke Mercury/Mariner outboards, including 60 HP Bigfoot, 75-115 HP FourStroke models, and various 2-stroke engines from 65 HP to 125 HP. Always check your engine's serial number against our compatibility table to confirm fitment.
How do I know this is the right water pump kit for my engine?
The most reliable way is to match your engine's model and serial number with the ranges listed in the compatibility tables. You can also cross-reference your existing part number with the equivalents shown in our Part Number Matrix.
What are the signs of a failing water pump impeller?
Common symptoms include a weak or intermittent water stream from the "tell-tale" outlet, engine overheating alarms, steam from the exhaust, and reduced engine performance. Address these signs immediately to prevent severe engine damage.
How often should the water pump impeller be replaced?
As a best practice for preventative maintenance, we recommend inspecting the impeller annually and replacing it every 1-2 years or every 100-200 hours of operation. Replacement frequency may depend on your operating conditions (e.g., saltwater vs. freshwater, high-debris areas).
What is the difference between this aftermarket kit and an OEM part?
This aftermarket kit is engineered to meet or exceed original equipment manufacturer (OEM) specifications for fit, form, and function. It uses comparable high-quality materials, like a durable neoprene impeller and stainless steel housing, to ensure reliable performance and service life at a better value.
Does this kit include all the necessary gaskets and seals?
Yes, the kit is designed to be a complete solution for a standard water pump service. It includes the necessary gaskets, seals, and o-rings required to properly assemble the water pump housing.
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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