804626R02 Aftermarket Mercruiser Rebuilt Rochester Carburetor | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket remanufactured Rochester Quadrajet 4-barrel carburettor - Replacement Part Number: 1347-804626R02

A remanufactured marine Rochester Quadrajet for selected MerCruiser big-block V8 engines. The service number replaces 1347-8288A1 and is used on 330HP, 340HP, 7.4L MIE, Bravo 7.4L and 454 MAG applications when the original Rochester calibration matches. The stamped carburettor number must be checked because jetting and linkage differ.

⚙️ Key Features

• Remanufactured marine Rochester four-barrel carburettor

• Designed for selected MerCruiser big-block V8 engines

• Replaces 1347-8288A1 and related Rochester calibrations

• Small primaries support cruise operation; secondaries supply high-load airflow

• Requires confirmation of original stamped Rochester number

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 1347-804626R02 → Remanufactured replacement for 1347-8288A1

• 804626R02 (short-form Mercury service reference)

OEM / Related Numbers:

• 1347-804626R02

• 804626R02

• 1347-8288A1

• 8288A1

• Rochester 1708563

• Rochester 17057287

• Rochester 17059287

• Rochester 17059290

• Rochester 17080560

Aftermarket / Verified Equivalents:

• Sierra: 18-7616-1

• Mallory: 9-34005

🚤 Compatibility

Commonly used on:

• MerCruiser carburetted big-block sterndrive and inboard engines

Typically suits:

• Engine models:

• MerCruiser 330

• MerCruiser 330/340 7.4L MIE

• MerCruiser Bravo I/II 7.4L

• MerCruiser 454 MAG Alpha

• Engine Displacement: Primarily 427 CID and 454 CID / 7.4L V8 applications

• Engine Type: Carburetted big-block V8 marine petrol engine

• Year Range: Approximately 1977 - 1992 depending on engine family

🔌 Function

The Quadrajet supplies fuel through primary circuits during starting, idle and cruise and brings the secondary system into operation as airflow and load increase.

Common signs of failure:

• Hard starting, flooding or choke faults

• Rough idle or stalling

• Hesitation or intake backfire

• Secondaries fail to open correctly and restrict power

• Rich exhaust or excessive fuel consumption

• Fuel seepage, float faults or worn throttle shafts

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging