3310-860070A2 Aftermarket Mercruiser Carburetor Assembly 2-Barrel | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket MerCruiser Mercarb 2-barrel carburettor - Replacement Part Number: 3310-860070A2

A complete two-barrel Mercarb replacement for MerCruiser 2.5L and 3.0L inline-four engines. The assembly supersedes 3310-806077A2 on applicable production groups and covers documented 3.0L and 3.0LX serial ranges from the early to mid-1990s. Confirm the engine serial break, fuel-inlet orientation and choke connection before fitting.

⚙️ Key Features

• Complete marine two-barrel Mercarb assembly

• Designed for MerCruiser 2.5L and 3.0L inline-four engines

• Preset aftermarket replacement with marine calibration

• Restores cold starting, stable idle and throttle response

• Direct replacement where the original number and serial group match

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 3310-860070A2 → Supersedes 3310-806077A2

OEM / Related Numbers:

• 3310-860070A2

• 860070A2

• 3310-806077A2

• 806077A2

Aftermarket / Verified Equivalents:

• Sierra: 18-7370N

• Recmar: REC3310-860070A2

🚤 Compatibility

Commonly used on:

• MerCruiser GM-based inline-four sterndrive engines

Typically suits:

• Engine models:

• MerCruiser 2.5L

• MerCruiser 3.0L

• MerCruiser 3.0LX

• Engine Displacement: 153 CID / 2.5L and 181 CID / 3.0L

• Engine Type: Carburetted inline four-cylinder marine petrol engine

• Year Range: Approximately 1990 - 1995

• 3.0L Serial Range: 0C856559 - 0F353099

• 3.0LX Serial Range: 0C856559 - 0F603999

• Production Breaks: 0D447414/0D447415 and 0D836075/0D836076

🔌 Function

The carburettor meters fuel through the idle, transition and main circuits and uses its choke system to provide the richer mixture needed during cold starting.

Common signs of failure:

• Hard starting or repeated flooding

• Engine stalls when returned to idle

• Hesitation or backfire as throttle is applied

• Lean surge or poor power under load

• Rich running, blackened spark plugs or high fuel consumption

• Fuel leakage or sticking float and needle components

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging