Mercury Float Kit – Fits Mercury/Mariner/Force Outboards (Replaces 19273)

$28.03

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Product Details

This Mercury Float Kit is an essential component for carburetor repair on various Mercury, Mariner, and Force outboards. It is designed to restore proper fuel level management within the carburetor bowl, ensuring reliable engine performance.

The kit serves as a direct aftermarket replacement for original equipment manufacturer (OEM) part number 19273.

Engineered for gasoline fuel systems
Direct replacement installation
Includes one complete float assembly

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number
Mercury	19273

Engine & Model Compatibility

This float kit is designed for a wide range of Mercury, Mariner, and Force carburetor applications that specify OEM part 19273. Due to the broad application, specific model and year ranges are not available. Please verify compatibility by matching the part number (19273) with your engine's service manual or existing part.

Technical Specs

Product Type: Carburetor Float Kit
Installation: Direct replacement for original equipment
Fuel Type: Gasoline
Dimensions: 7.0" x 6.0" x 1.0"
Weight: 0.05 lbs (0.023 kg)
Replaces OEM Part: Mercury Marine 19273

What’s in the Box

1 x Float Kit (19273)

Installation Notes

Professional installation is recommended. The basic steps for replacement are outlined below. Always refer to your engine's official service manual for detailed procedures, torque specifications, and safety precautions.

Disconnect the battery and safely relieve any fuel system pressure.
Remove the engine cowling and airbox assembly to access the carburetor.
Carefully disconnect the fuel line, throttle linkage, and any vacuum hoses from the carburetor.
Remove the mounting bolts and detach the carburetor from the engine.
Disassemble the carburetor by removing the float bowl.
Remove the old float by sliding out the hinge pin. Be careful not to lose the attached needle valve.
Install the new float and needle from the kit, ensuring the hinge pin is secure.
Check and adjust the float height according to your service manual's specifications, as this is critical for performance.
Reassemble the carburetor, using new gaskets if required.
Reinstall the carburetor onto the engine, reconnecting all linkages and hoses.
Reconnect the battery, prime the fuel system, and check thoroughly for any leaks before starting the engine.

Troubleshooting & FAQ

How do I know if my carburetor float is bad?

Common signs of a failing float include fuel leaking from the carburetor, a strong smell of gasoline, engine flooding, poor or rough idling, difficulty starting, or black smoke from the exhaust. The float itself may be cracked, saturated with fuel (losing buoyancy), or physically damaged.

What is the main function of a carburetor float?

The float's purpose is to maintain a consistent fuel level in the carburetor's float bowl. It acts as a buoy that rises and falls with the fuel level, controlling a needle valve that opens or closes the fuel inlet. This prevents the carburetor from flooding or starving the engine of fuel.

Is this float kit resistant to ethanol-blended fuels?

Yes, this aftermarket kit is manufactured with materials designed to resist deterioration from modern gasoline blends, including those containing up to 10% ethanol (E10).

Do I need to adjust the float level after installing this new kit?

Yes, absolutely. Proper float height is critical for correct carburetor function. After installing the new float, you must check and adjust the float level to the specifications listed in your engine's official service manual.

Why is my engine still leaking fuel after installing the new float kit?

If fuel leaks persist, double-check the float height adjustment. Other potential causes include a dirty or damaged needle valve seat (the surface the needle seals against), a worn or improperly installed float bowl gasket, incorrect fuel pressure, or cracks in the carburetor body itself.

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

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