3304-9354A2 Aftermarket Mercruiser Rebuilt Rochester 4-Barrel Carburetor | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket rebuilt Rochester Quadrajet 4-barrel carburettor - Replacement Part Number: 3304-9354A2

A marine-calibrated Rochester Quadrajet replacement for selected MerCruiser 3.7L inline-four and 4.3L LX V6 engines. Direct applications include 180/190 3.7LX engines and 205HP 4.3L V6 engines using the listed original carburettor numbers. Match the Rochester number, choke arrangement, linkage and engine serial before installation.

⚙️ Key Features

• Marine Rochester Quadrajet-pattern 4-barrel carburettor

• Suitable for selected 3.7L inline-four and 4.3L V6 engines

• Small primaries support idle and cruise operation

• Large secondaries provide additional airflow under load

• Rebuilt-style aftermarket replacement for the listed service numbers

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 3304-9354A2 → Replaced by remanufactured service reference 1347-804623R02

• 1347-804623R02 → Replaces 1347-804623R1

OEM / Related Numbers:

• 3304-9354A2

• 1347-804623R02

• 1347-804623R1

• 3304-804623R

• 804623R

• 804623R02

• Rochester 17084516

Aftermarket / Verified Equivalents:

• Sierra: 18-7604-1

• Recmar: REC3304-9354A2

🚤 Compatibility

Commonly used on:

• MerCruiser carburetted sterndrive engines using Rochester Quadrajet carburettors

Typically suits:

• Engine models:

• MerCruiser 180 / 3.7LX

• MerCruiser 190 / 3.7LX

• MerCruiser 205 / 4.3L LX V6

• Engine Displacement: 224 CID / 3.7L and 262 CID / 4.3L

• HP Range: 180HP - 205HP

• Engine Type: Carburetted marine petrol engine

• Year Range: Approximately 1985 - 1992

• 4.3L Serial Range: Approximately 0A331455 - 0D714369

🔌 Function

The Quadrajet meters fuel through primary circuits during starting, idle and cruising, then supplies additional mixture through the secondary system as airflow and engine load increase.

Common signs of failure:

• Hard starting, flooding or ineffective choke operation

• Rough idle or stalling at low speed

• Hesitation or intake backfire during acceleration

• Secondaries fail to open correctly and restrict high-load power

• Rich exhaust, plug fouling or excessive fuel use

• Fuel seepage, worn throttle shafts or sticking float components

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging