Aftermarket Carburetor Assembly for Mercury/Mariner 4–5 HP 2-Stroke Outboards – Replaces 812648T, 812648 and 3303-812648T
Aftermarket Carburetor Assembly for Mercury/Mariner 4–5 HP 2-Stroke Outboards – Replaces 812648T, 812648 and 3303-812648T is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Aftermarket Carburetor Assembly for Mercury/Mariner 4–5 HP 2-Stroke...
Aftermarket Carburetor Assembly for Mercury/Mariner 4–5 HP 2-Stroke Outboards – Replaces 812648T, 812648 and 3303-812648T is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket carburetor assembly is intended as a replacement for selected Mercury, Mariner and Quicksilver 4–5 HP two-stroke outboard applications. The listed applications cover models manufactured from approximately 1987 through 2006, subject to the model, year and serial-number conditions shown below.
Use the part number and engine-identification information to confirm compatibility before ordering. This assembly is listed as a replacement for Mercury part numbers 812648T and 812648, and Mercury/Quicksilver reference 3303-812648T. Tohatsu reference 369-03200-2 is provided as a cross-reference only and should be verified against the specific Tohatsu engine.
- Replacement carburetor assembly for selected 4–5 HP two-stroke outboards.
- Designed around the listed OEM mounting and connection configuration.
- Zinc-alloy housing intended for use in a marine environment.
- Confirm the original carburetor number, model, horsepower, stroke and serial range before installation.
Part Number Matrix
The following numbers are customer-facing OEM or manufacturer reference numbers associated with this replacement listing.
| Brand | Reference Number |
|---|---|
| Mercury | 812648T |
| Mercury | 812648 |
| Mercury | 3303-812648T |
| Quicksilver | 3303-812648T |
| Tohatsu | 369-03200-2 — cross-reference only |
Engine and Model Compatibility
Fitment depends on the complete engine configuration. Match the brand, model or model family, rated horsepower, two-stroke configuration, year and serial range where applicable. A part-number match is helpful but does not replace verification of the complete engine identification.
| Brand | Model or Application | Rated HP | Stroke | Year or Serial Condition | Reference | Notes |
|---|---|---|---|---|---|---|
| Mercury | 1004137 | 4 | 2-Stroke | 1987 | 812648T | Carburetor application |
| Mercury | 1004207 | 4 | 2-Stroke | 1987 | 812648T | Carburetor application |
| Mercury | 1004227 | 4 | 2-Stroke | 1987 | 812648T | Carburetor application |
| Mercury | 1004201BK | 4 | 2-Stroke | 1988 | 812648T | Carburetor application |
| Mercury | 1004211BK | 4 | 2-Stroke | 1988 | 812648T | Carburetor application |
| Mercury | 1004216BK | 4 | 2-Stroke | 1988 | 812648T | Carburetor application |
| Mercury | 1005201BK | 5 | 2-Stroke | 1988 | 812648T | Carburetor application |
| Mercury | 1005211BK | 5 | 2-Stroke | 1988 | 812648T | Carburetor application |
| Mercury/Mariner/Quicksilver | 4 HP models | 4 | 2-Stroke | 1989–2006; model suffixes may vary | 812648T | Verify the exact model and serial number |
| Mercury/Mariner/Quicksilver | 5 HP models | 5 | 2-Stroke | 1989–2006; model suffixes may vary | 812648T | Verify the exact model and serial number |
| Mercury | 4 HP models | 4 | 2-Stroke | Serial 0G710613–0T894438 | 812648T | Carburetor application |
| Mercury | 4 HP models | 4 | 2-Stroke | Serial 0P017000–0P400999 | 812648T | Carburetor application |
| Mercury | 4 HP models | 4 | 2-Stroke | Serial 0P401000 and later | 812648T | Carburetor application |
| Mercury | 4 HP models | 4 | 2-Stroke | Serial 0T894439 and later | 812648T | Carburetor application |
| Mercury | 5 HP models | 5 | 2-Stroke | Serial 0G710613–0T894438 | 812648T | Carburetor application |
| Mercury | 5 HP models | 5 | 2-Stroke | Serial 0P017000–0P400999 | 812648T | Carburetor application |
| Mercury | 5 HP models | 5 | 2-Stroke | Serial 0P401000 and later | 812648T | Carburetor application |
| Mercury | 5 HP models | 5 | 2-Stroke | Serial 0T894439 and later | 812648T | Carburetor application |
For a Tohatsu application, the reference number 369-03200-2 should be treated as a lead for verification rather than confirmation of every 4–5 HP two-stroke model.
| Brand | Application | Rated HP | Stroke | Reference | Fitment Note |
|---|---|---|---|---|---|
| Tohatsu | Selected compatible models | 4–5 | 2-Stroke | 369-03200-2 | Cross-reference only; verify the exact model and serial number |
Technical Specifications
- Product Type
- Carburetor assembly
- Application
- Selected 4–5 HP two-stroke outboard engines
- Installation
- Replacement installation using the listed OEM-style mounting configuration
- Fuel Type
- Gasoline for two-stroke outboard applications
- Housing Material
- Zinc alloy
- Housing Color
- Silver
- Reference Numbers
- 812648T, 812648, 3303-812648T and Tohatsu 369-03200-2 cross-reference
- Product Type
- Aftermarket replacement, not an OEM-branded component
What's in the Box
- 1 × Carburetor assembly
Gaskets, hoses, linkages and other installation hardware are not listed as included components unless specifically shown with the item. Reuse or replace these parts as required for the particular engine.
Installation Notes
- Shut off the fuel supply and disconnect the fuel line from the existing carburetor.
- Record the position of the throttle linkage and choke mechanism, then disconnect them carefully.
- Remove the nuts or bolts securing the old carburetor to the engine.
- Remove the old carburetor and gasket. Clean the intake mounting surface and remove remaining gasket material.
- Install a suitable new gasket if the original gasket is not reusable.
- Position the replacement carburetor on the mounting studs or bolts and tighten the fasteners evenly to the engine manufacturer's specification. Do not overtighten.
- Reconnect the throttle linkage and choke mechanism, checking that they move smoothly without binding.
- Reconnect the fuel line and inspect the connection.
- Turn on the fuel supply and check carefully for leaks before starting the engine.
- After installation, follow the engine service manual for idle-speed, mixture and operating adjustments.
Troubleshooting and FAQ
How do I confirm that this carburetor fits my engine?
Compare the number on the existing carburetor with 812648T, 812648 or 3303-812648T, then confirm the engine brand, model, horsepower, two-stroke configuration, year and serial range. For a Tohatsu engine, verify the complete application rather than relying only on the 369-03200-2 cross-reference.
What symptoms can indicate a carburetor problem?
Hard starting, rough idle, stalling, poor acceleration, excessive smoke and fuel leakage can be associated with carburetor problems. Fuel-system contamination, damaged gaskets, blocked passages and ignition issues can produce similar symptoms, so inspect the complete system before replacing parts.
Will adjustment be required after installation?
A replacement carburetor may require idle-speed or mixture adjustment depending on the specific engine and operating conditions. Follow the engine manufacturer's service procedure and do not change factory settings unnecessarily.
Is this an OEM carburetor?
No. This listing is for an aftermarket replacement assembly. The OEM and manufacturer reference numbers are provided for identification and compatibility comparison only.
Is the Tohatsu reference a guaranteed fit?
No. Tohatsu 369-03200-2 is shown as a cross-reference. Confirm the exact Tohatsu model, year, serial number and original carburetor configuration before ordering.
What maintenance is recommended?
Use fresh, clean fuel, keep the fuel system free of contamination and inspect fuel lines and connections regularly. For extended storage, follow the engine manufacturer's fuel-stabilization and carburetor-draining procedure.
Safety and Important Information
- Verify the original part number and complete engine identification before purchase.
- Do not rely on horsepower alone; model, year, stroke and serial conditions must be considered together.
- Inspect the carburetor, gasket surfaces, fuel line and connections for leaks before operating the engine.
- This is an aftermarket replacement and is not an OEM-branded component.
- Professional installation is recommended when the correct adjustment or service procedure is uncertain.
About Sea Sierra
- Pro-Grade Standards — Marine replacement parts selected for dependable fit and service use.
- Manufacturer-Direct Value — Practical replacement solutions for maintaining marine equipment.
- Application-Focused Support — Use the part-number and engine-identification details above to verify compatibility before ordering.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
