3303-812648T Aftermarket Mercruiser Carburetor 4- & 5-Cylinder Engines | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Mercury/Mariner outboard carburettor - Replacement Part Number: 3303-812648T

A complete replacement carburettor for Mercury and Mariner 4HP and 5HP two-stroke outboards. Despite the supplied MerCruiser wording, 3303-812648T is an outboard carburettor reference and is not a MerCruiser sterndrive carburettor. It also cross-references to the related Tohatsu-built small outboard platform. Match the engine serial number and original carburettor casting before installation.

⚙️ Key Features

• Complete carburettor for 4HP and 5HP two-stroke outboards

• Suitable for Mercury, Mariner and matching Tohatsu-built applications

• Replaces earlier 3303-9720 and 3303-812648 references

• Restores starting, idle stability and throttle response

• Not intended for MerCruiser inboard or sterndrive engines

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 3303-812648T → Supersedes 3303-812648

• 3303-812648T → Replaces 3303-9720

OEM / Related Numbers:

• 3303-812648T

• 812648T

• 3303-812648

• 3303-9720

• Tohatsu 369-03200-2

Aftermarket / Verified Equivalents:

• Recmar: REC3303-812648T

• Tohatsu-pattern replacement: 369-03200-2

🚤 Compatibility

Commonly used on:

• Mercury, Mariner and Tohatsu-built small two-stroke outboards

Typically suits:

• Engine models:

• Mercury 4HP two-stroke

• Mercury 5HP two-stroke

• Mariner 4HP and 5HP two-stroke equivalents

• HP Range: 4HP - 5HP

• Engine Type: Carburetted two-stroke outboard

• Year Range: Approximately 1999 - 2006

🔌 Function

The carburettor meters fuel and air for cold starting, idle, transition and full-throttle operation of the small two-stroke engine.

Common signs of failure:

• Hard starting or engine only runs with choke

• Low-speed stalling or unstable idle

• Hesitation or loss of power as the throttle opens

• Lean surge or intake backfire

• Rich running, excessive smoke or plug fouling

• Fuel leakage or flooding from the float system

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging