Carburetor – Fits Mercury/Mariner/Quicksilver 4-5HP 2-Stroke (Replaces 812648T, 3303-812648T, 369-03200-2)

$57.89 $92.00

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Carburetor – Fits Mercury/Mariner/Quicksilver 4-5HP 2-Stroke (Replaces 812648T, 3303-812648T, 369-03200-2) is backordered and will ship as soon as it is back in stock.

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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

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This is a direct replacement Carburetor – Fits Mercury/Mariner/Quicksilver 4-5HP 2-Stroke Outboards, designed for Mercury and Mariner 4-5HP 2-stroke engines from 1987–2006 (serial numbers 0G710613 through 0T894438 and 0P017000 through 0P400999). It is also compatible with Tohatsu 4-5HP 2-stroke models as a cross-reference for their part number 369-03200-2.

This assembly provides a direct interchange for Mercury part numbers 812648T, 812648, 3303-812648T, Quicksilver 3303-812648T, and Tohatsu 369-03200-2, ensuring a precise fit and restoring original performance.

Installs directly using the OEM mounting pattern and connections.
Constructed from a durable zinc alloy to withstand the marine environment.
Engineered for 2-stroke premix gasoline fuel systems.

Part Number Matrix

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

Brand	Part Number
Mercury	812648T
Mercury	812648
Mercury	3303-812648T
Quicksilver	3303-812648T
Tohatsu	369-03200-2

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Mercury/Mariner/Quicksilver: This part fits a wide range of 4HP and 5HP 2-stroke models manufactured between 1987 and 2006, including specific serial number ranges listed below.

For Tohatsu: This part serves as a cross-reference for Tohatsu part number 369-03200-2 on compatible 4-5HP 2-stroke outboards.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
Mercury	1004137	4	2-Stroke	1987	812648T	CARBURETOR
Mercury	1004207	4	2-Stroke	1987	812648T	CARBURETOR
Mercury	1004227	4	2-Stroke	1987	812648T	CARBURETOR
Mercury	1004201BK	4	2-Stroke	1988	812648T	CARBURETOR
Mercury	1004211BK	4	2-Stroke	1988	812648T	CARBURETOR
Mercury	1004216BK	4	2-Stroke	1988	812648T	CARBURETOR
Mercury	1005201BK	5	2-Stroke	1988	812648T	CARBURETOR
Mercury	1005211BK	5	2-Stroke	1988	812648T	CARBURETOR
Mercury	4HP	4	2-Stroke	1989–2006	812648T	Multiple model suffixes (GK through FM)
Mercury	5HP	5	2-Stroke	1989–2006	812648T	Multiple model suffixes (GK through FM)
Mercury	4HP	4	2-Stroke	Serial 0G710613-0T894438	812648T	CARBURETOR
Mercury	4HP	4	2-Stroke	Serial 0P017000-0P400999	812648T	CARBURETOR
Mercury	4HP	4	2-Stroke	Serial 0P401000 & Up	812648T	CARBURETOR
Mercury	4HP	4	2-Stroke	Serial 0T894439 & Up	812648T	CARBURETOR
Mercury	5HP	5	2-Stroke	Serial 0G710613-0T894438	812648T	CARBURETOR
Mercury	5HP	5	2-Stroke	Serial 0P017000-0P400999	812648T	CARBURETOR
Mercury	5HP	5	2-Stroke	Serial 0P401000 & Up	812648T	CARBURETOR
Mercury	5HP	5	2-Stroke	Serial 0T894439 & Up	812648T	CARBURETOR
Tohatsu	Compatible 2-stroke models	4-5	2-Stroke		369-03200-2	Cross-reference only

Technical Specs

Product Type: Carburetor Assembly
Installation: Direct replacement
Fuel Type: Gasoline (2-stroke premix)
Connection: OEM mounting pattern
Housing Material: Zinc alloy
Housing Color: Silver
Fitting Type: OEM fit
Warranty: Typically 6 months (varies by seller)
Other Technical Attributes: Designed for 2-stroke engines; optimized for 4-5HP performance

What’s in the Box

1 x Carburetor Assembly (812648T/3303-812648T)

Installation Notes

Ensure the engine is off and cool. Disconnect the spark plug wire and fuel line.
Carefully remove the engine cowling to access the carburetor.
Note the position of and disconnect any throttle linkages or choke levers.
Unbolt and remove the old carburetor. Clean the mounting surface of any old gasket material.
Install the new carburetor, ensuring the gasket is correctly positioned.
Securely tighten the mounting bolts to the manufacturer’s recommended torque.
Reconnect all throttle linkages, choke levers, and the fuel line.
Prime the carburetor if necessary, reconnect the spark plug wire, and test the engine.

Troubleshooting & FAQ

How can I confirm this carburetor fits my engine?

The best way is to match your original part number to one of the equivalents listed in our Part Number Matrix. Additionally, check your engine model, HP, and year against the compatibility table. For Mercury/Mariner engines, serial number ranges are also provided for precise fitment.

Is any adjustment needed after installation?

Our carburetors are typically preset to factory specifications, but minor idle speed or air/fuel mixture adjustments may be necessary depending on your specific engine, altitude, and fuel type to achieve optimal performance.

What are the signs of a failing carburetor?

Common symptoms include difficulty starting, rough idling, stalling at low speeds, engine hesitation or surging, black smoke from the exhaust, and poor fuel economy. These issues often point to clogged jets or internal wear.

Can I clean my old carburetor instead of replacing it?

Cleaning can sometimes resolve issues caused by fuel deposits, but it may not fix problems from worn components, warped surfaces, or internal corrosion. Replacement ensures all parts are new and built to correct tolerances.

What maintenance is recommended for this carburetor?

To extend the life of your carburetor, use a fuel stabilizer during storage, regularly replace your fuel filter, and avoid using fuel with a high ethanol content (above 10%) unless your engine is rated for it.

Is there a difference between the Mercury 812648T and the Quicksilver 3303-812648T?

No, these are interchangeable part numbers. Quicksilver is a brand owned by Mercury Marine for aftermarket parts. This carburetor is a direct replacement for both.

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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