426574 Aftermarket Volvo Penta Holley Carburetor 5.7L | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Marine Power Holley 4-barrel carburettor - Part Number: 426574 / MP426574

A 600 CFM Holley marine four-barrel carburettor for selected Volvo Penta and OMC GM 350 CID / 5.7L V8 applications. It cross-references to Volvo Penta 3855279 and 878844 and OMC 0986471. The original four-barrel calibration, choke, fuel inlet and throttle linkage must be confirmed.

⚙️ Key Features

• Marine Holley four-barrel carburettor

• Nominal airflow rating: 600 CFM

• Designed for selected GM 350 CID / 5.7L marine V8 engines

• Cross-references to Volvo Penta and OMC service numbers

• Provides additional airflow through secondary barrels under load

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 426574 / MP426574 (aftermarket Marine Power reference)

• Cross-references to Volvo Penta 3855279 and 878844

OEM / Related Numbers:

• 426574

• MP426574

• Volvo Penta 3855279

• Volvo Penta 878844

• OMC 0986471

Aftermarket / Verified Equivalents:

• Marine Power: MP426574

• Recmar: MP426574

🚤 Compatibility

Commonly used on:

• Volvo Penta and OMC GM 5.7L V8 engines originally fitted with the matching Holley four-barrel carburettor

Typically suits:

• Engine models:

• Volvo Penta 5.7L / 350 CID four-barrel applications using 3855279 or 878844

• OMC 5.7L / 350 CID applications using 0986471

• Engine Displacement: 350 CID / 5.7L

• Engine Type: Carburetted GM V8 marine petrol engine

• Carburettor Type: Holley marine 4-barrel, approximately 600 CFM

• Year Range: Confirm from the original carburettor number and engine model suffix

🔌 Function

The four-barrel carburettor supplies fuel through primary circuits during starting, idle and cruise, then brings the secondary system into operation as engine airflow and load increase.

Common signs of failure:

• Hard starting or ineffective choke operation

• Unstable idle or stalling

• Hesitation or backfire during throttle opening

• Secondaries fail to open correctly and restrict power

• Rich running, plug fouling or excessive fuel consumption

• Fuel leakage or float-system flooding

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging