Water Pump Gasket – Fits Mercury Marine/Force 75-120HP (Replaces 27-430472)
Water Pump Gasket – Fits Mercury Marine/Force 75-120HP (Replaces 27-430472) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Water Pump Gasket – Fits Mercury Marine/Force 75-120HP (Replaces 27...
Product Details
This high-quality Water Pump Gasket ensures a proper seal for the water pump on Mercury Marine and Force 75-120HP outboard motors. It is a critical component for preventing leaks and maintaining cooling system efficiency, designed as a direct-fit replacement for the original part.
It directly replaces Mercury part numbers 27-430472 and the superseded part number 27-8M0214931.
- Installs in the outboard motor water pump assembly.
- Essential for routine water pump and impeller maintenance.
- Engineered to provide a reliable, leak-free seal.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Mercury | 27-430472 | 27-8M0214931 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is designed for a range of Mercury Marine and Force outboard engines.
| Brand | Model | Rated HP | OEM Part No. | Notes |
|---|---|---|---|---|
| Mercury/Force | Force Outboards | 75-120 | 27-430472 | Superseded by 27-8M0214931 |
Technical Specs
- Product Type
- Water Pump Gasket
- Application
- Outboard motor water pump
- Dimensions
- 6.0" x 7.5" x 0.13"
What’s in the Box
- 1 x Water Pump Gasket (replaces 27-430472 / 27-8M0214931)
Installation Notes
- Disconnect the battery and remove the engine cover.
- Locate and remove the lower unit from the outboard motor.
- Disassemble the water pump housing to access the impeller and gaskets.
- Remove the old water pump gasket, ensuring the mating surfaces are clean and free of old material.
- Install the new gasket in its correct position.
- Reassemble the water pump housing, install a new impeller if needed, and secure the lower unit.
- Reconnect the battery, start the engine in water, and check for proper water flow and leaks.
Troubleshooting & FAQ
How do I know if this gasket will fit my engine?
This gasket is designed for most Mercury Marine and Force 75-120HP outboard engines. To ensure compatibility, please verify your original part number matches 27-430472 or the superseded number 27-8M0214931.
What are common signs that my water pump gasket is failing?
Symptoms of a bad gasket include the engine overheating, a weak or non-existent water stream from the "tell-tale" outlet, or visible water leaks around the water pump housing on the lower unit.
How often should I replace my water pump gasket?
It is highly recommended to replace the water pump gasket every time you service the impeller, which should typically be done every 1-2 years or every 100-200 hours of operation, depending on usage conditions.
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.
Payment & Security
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