Carburetor – Fits Mercury Mariner 4HP 5HP 2-stroke (Replaces 369-03200-2, 812648T, 812648, 3303-9720)
Carburetor – Fits Mercury Mariner 4HP 5HP 2-stroke (Replaces 369-03200-2, 812648T, 812648, 3303-9720) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Carburetor – Fits Mercury Mariner 4HP 5HP 2-stroke (Replaces 369-03...
Carburetor – Fits Mercury Mariner 4HP 5HP 2-stroke (Replaces 369-03200-2, 812648T, 812648, 3303-9720) is backordered and will ship as soon as it is back in stock.
Product Details
This Carburetor – Fits Mercury Mariner 4HP 5HP 2-stroke is designed for Mercury Mariner 4HP and 5HP 2-stroke outboard engines with serial numbers ranging from 0P17000 to 0P400999. It delivers reliable fuel metering for consistent engine performance across recreational and light-duty marine applications.
This carburetor directly replaces OEM part numbers 369-03200-2, 812648T, 812648, and 3303-9720, offering a cost-effective alternative to factory components.
- Drop-in replacement for select Mercury Mariner 2-stroke models
- Compatible with standard marine fuel blends
- Includes complete carburetor assembly for immediate installation
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Mercury Mariner | 369-03200-2 | OEM primary |
| Mercury Mariner | 812648T | OEM interchange |
| Mercury Mariner | 812648 | OEM interchange |
| Mercury Mariner | 3303-9720 | OEM interchange |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Serial Numbers | OEM Part No. |
|---|---|---|---|---|---|
| Mercury Mariner | MERCURY Mariner | 4HP 5HP | 2-stroke | 0P17000 – 0P400999 | 369-03200-2 |
Technical Specs
- Part Type
- Carburetor assembly
- Application
- Mercury Mariner 4HP 5HP 2-stroke outboards
- Serial Range
- 0P17000 – 0P400999
- Replaces OEM
- 369-03200-2, 812648T, 812648, 3303-9720
- Construction
- Die-cast body with precision jets and gaskets
What's in the Box
- Carburetor (complete assembly)
Installation Notes
- Disconnect the fuel line and remove the engine cowling to access the existing carburetor.
- Detach throttle linkage, choke cable, and any mounting fasteners securing the old carburetor.
- Remove the old carburetor and clean the mounting surface on the intake manifold.
- Position the new carburetor onto the manifold, ensuring gasket alignment is correct.
- Hand-tighten mounting bolts, then torque evenly in a cross pattern to manufacturer specifications.
- Reconnect throttle linkage, choke cable, and fuel line; verify all connections are secure.
- Prime the fuel system and check for leaks before starting the engine.
- Start the engine and adjust idle mixture and speed screws as needed for smooth operation.
Troubleshooting & FAQ
How do I confirm this carburetor fits my engine?
Cross-reference your engine serial number (found on the mounting bracket or block) with the range 0P17000–0P400999. Verify your model is a Mercury Mariner 4HP or 5HP 2-stroke, and compare your existing carburetor part number against 369-03200-2, 812648T, 812648, or 3303-9720.
What symptoms indicate I need a new carburetor?
Common signs include hard starting, rough idle, poor acceleration, black smoke, fuel leaks, or erratic RPM. If cleaning and rebuilding the old carburetor don't resolve these issues, replacement is often the most reliable solution.
Do I need additional gaskets or hardware?
This listing includes the complete carburetor assembly. You may need a new intake gasket if yours is damaged; confirm gasket condition during removal and replace if torn or compressed.
Can I adjust the carburetor after installation?
Yes. Most 2-stroke carburetors have idle-speed and idle-mixture screws. Start with factory settings (typically 1.5 turns out), warm the engine, then fine-tune for smooth idle and crisp throttle response. Consult your service manual for torque specs and adjustment procedures.
How often should I replace or service the carburetor?
Carburetors don't have a fixed replacement interval, but regular cleaning and annual inspection are recommended if the engine sits for extended periods. Ethanol fuel can accelerate varnish buildup, so use fuel stabilizer and drain the system during off-season storage.
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 against 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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