3854018 Aftermarket Volvo Penta Carburetor Float | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Volvo Penta/OMC carburettor float - Replacement Part Number: 3854018

A replacement float for selected Volvo Penta and OMC Holley two-barrel marine carburettors. It supersedes Volvo Penta 856191 and cross-references to OMC 986785. Applications include 3.0L GL engines and selected earlier AQ and V8 model families using the same float.

⚙️ Key Features

• Precision replacement carburettor float

• Maintains the specified fuel level in the float bowl

• Operates the needle valve as fuel level rises and falls

• Helps prevent flooding, fuel starvation and unstable mixture

• Direct replacement where the original float number matches

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 3854018 → Supersedes Volvo Penta 856191

OEM / Related Numbers:

• 3854018

• 856191

• OMC 986785

Aftermarket / Verified Equivalents:

• Sierra: 18-36905

• Mallory: 9-36905

• Recmar: REC3854018

🚤 Compatibility

Commonly used on:

• Volvo Penta and OMC Holley two-barrel marine carburettors

Typically suits:

• Engine models:

• Volvo Penta 3.0GLM and 3.0GLP

• OMC 3.0L 1992-1993 applications using 986785

• Volvo Penta AQ120B and AQ140A

• Volvo Penta 570A, 572A and 740B where 3854018 is specified

• Carburettor Type: Holley marine 2-barrel

• Engine Type: Carburetted marine petrol engine

• Year Range: Covers early AQ models through later 3.0L GL applications; confirm by carburettor number

🔌 Function

The float rises and falls with the fuel level in the carburettor bowl and moves the inlet needle to control fuel entry. Correct float height is essential for stable mixture and reliable operation.

Common signs of failure:

• Fuel flooding or overflow from the carburettor

• Rich running, smoke or spark-plug fouling

• Fuel starvation, lean surge or loss of power

• Hard starting or stalling as bowl level changes

• Float absorbs fuel, sticks, cracks or no longer closes the needle correctly

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging