3310-864943A01 Aftermarket Mercruiser Carburetor 5.7 GM350 V8 Alpha/Bravo | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket MerCruiser Mercarb 2-barrel carburettor - Replacement Part Number: 3310-864943A01

A marine two-barrel carburettor for MerCruiser 5.7L 350 CID V8 sterndrive and inboard engines. It supersedes 3310-861245A1 and covers documented MCM and MIE/Tow Sports serial ranges. Match the original carburettor number, fuel-entry position, choke and throttle linkage before installation.

⚙️ Key Features

• Marine two-barrel carburettor for GM 350 CID V8 engines

• Suitable for Alpha, Bravo, MIE and Tow Sports configurations where specified

• New-casting and remanufactured aftermarket equivalents are available

• Restores correct idle, transition and full-load fuel delivery

• Designed for direct replacement of the listed Mercury service numbers

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 3310-864943A01 → Supersedes 3310-861245A1

OEM / Related Numbers:

• 3310-864943A01

• 864943A01

• 3310-861245A1

• 861245A1

Aftermarket / Verified Equivalents:

• Sierra new casting: 18-7376N

• Sierra remanufactured: 18-7639

• Recmar: REC3310-864943A01

🚤 Compatibility

Commonly used on:

• MerCruiser GM 5.7L V8 sterndrive, inboard and Tow Sports engines

Typically suits:

• Engine models:

• MCM 5.7L Alpha/Bravo

• MIE 5.7L

• MerCruiser 5.7L Tow Sports

• Engine Displacement: 350 CID / 5.7L

• Engine Type: Carburetted GM V8 marine petrol engine

• Year Range: Approximately 1998 - 2004

• MCM Serial Range: 0L010037 - 0W300754

• MIE/Tow Sports Serial Range: 0L002003 - 0W090899

🔌 Function

The carburettor meters fuel into the air stream through calibrated idle, transition and main circuits so the V8 receives the correct mixture throughout the throttle range.

Common signs of failure:

• Difficult cold or hot starting

• Rough idle or stalling when load is applied

• Hesitation, bogging or intake backfire

• Lean surge or reduced high-load power

• Rich running, plug fouling or excessive fuel consumption

• Fuel leakage, flooding or worn throttle-shaft symptoms

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging