Carburetor Assembly – Fits Mercury/Mariner 4-5HP 2-Stroke Outboards (Replaces 812648T, 3303-812648T)
Carburetor Assembly – Fits Mercury/Mariner 4-5HP 2-Stroke Outboards (Replaces 812648T, 3303-812648T) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Free standard shipping on all orders under 1 KG
Carburetor Assembly – Fits Mercury/Mariner 4-5HP 2-Stroke Outboards...
Product Details
This Carburetor Assembly – Fits Mercury/Mariner 4-5HP 2-Stroke Outboards (Replaces 812648T, 3303-812648T) is a direct-fit replacement for Mercury, Mariner, and Quicksilver 4-5HP 2-stroke outboard engines manufactured between 1987 and 2006. It is designed for models within serial number ranges 0G710613 through 0T894438 and 0P017000 through 0P400999.
It provides a direct interchange for several part numbers, including Mercury 812648T, Mercury 812648, Mercury/Quicksilver 3303-812648T, and Tohatsu 369-03200-2.
- Installs directly with the OEM mounting pattern.
- Constructed from durable zinc alloy to withstand the marine environment.
- Optimized for the fuel and performance needs of 4-5HP 2-stroke outboards.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number |
|---|---|
| Mercury | 812648T |
| Mercury | 812648 |
| Mercury | 3303-812648T |
| Quicksilver | 3303-812648T |
| Tohatsu | 369-03200-2 |
Engine & Model Compatibility
Confirm your engine model and year in the tables below to ensure proper fitment.
For Mercury, Mariner, and Quicksilver engines, verify your model, year, or serial number. This part fits a wide range of 4 and 5 HP models from 1987 to 2006 and beyond, as specified by serial number ranges.
| 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 |
The Tohatsu part number is provided as a cross-reference. Please verify compatibility with your specific Tohatsu model before ordering.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| 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
- 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
- Shut off the fuel supply and disconnect the fuel line from the carburetor.
- Note the position of and disconnect the throttle linkage and any choke mechanism.
- Remove the mounting nuts or bolts securing the old carburetor to the engine block.
- Carefully remove the old carburetor and gasket. Clean the intake manifold mounting surface thoroughly, removing all old gasket material.
- Position the new gasket and carburetor onto the mounting studs or bolts.
- Tighten the mounting nuts or bolts evenly to the manufacturer's recommended torque. Do not overtighten.
- Reconnect the throttle linkage and choke mechanism, ensuring smooth operation without binding.
- Reconnect the fuel line.
- Turn the fuel supply on and check for any leaks before attempting to start the engine.
Troubleshooting & FAQ
How do I know if this carburetor will fit my engine?
The best way is to check the part number stamped on your existing carburetor. If it matches 812648T, 812648, 3303-812648T, or Tohatsu 369-03200-2, this is a direct replacement. You can also consult our compatibility tables by matching your engine's brand, model, HP, year, and/or serial number.
What are the signs that my old carburetor needs to be replaced?
Common symptoms of a failing carburetor include difficulty starting, rough idling, stalling, poor acceleration, black smoke from the exhaust, and fuel leaks. If cleaning and rebuilding your current carburetor does not solve these issues, replacement is often the best solution.
Is any tuning or adjustment required after installation?
This carburetor is designed to work as a direct replacement and is typically pre-set for common applications. However, minor idle speed or air/fuel mixture adjustments may be necessary depending on your specific engine's condition, altitude, and humidity. Consult your engine's service manual for guidance.
What is the main difference between this and an OEM part?
This is an aftermarket part designed to meet or exceed original equipment manufacturer (OEM) specifications for fit, form, and function. It offers a cost-effective solution without sacrificing performance or reliability.
Why is this part listed as compatible with Tohatsu engines?
Tohatsu manufactured many of the small horsepower outboards for Mercury and Mariner during this time frame. As a result, many parts are interchangeable. This carburetor cross-references to Tohatsu part number 369-03200-2, but you should always verify fitment for your specific model.
What maintenance is recommended for a new carburetor?
To ensure long life, always use fresh, clean fuel and a proper fuel stabilizer during storage. Regularly inspect fuel lines and filters. If your engine will be stored for an extended period, it's best to run the carburetor out of fuel to prevent gum and varnish buildup.
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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