824324T02 3855805 12552422 Mercruiser Volvo Intake Manifold | Genuine Used Part

🔧 Product Description

Genuine GM Marine 4.3L V6 Vortec Two-Barrel Intake Manifold - Part Numbers: 824324T02 / 3855805 / 12552422

A genuine used cast-iron marine intake manifold for 4.3L / 262 CID GM V6 Vortec engines fitted with a two-barrel carburettor or compatible throttle-body arrangement.

The manifold uses the later eight-bolt Vortec cylinder-head pattern. Mercury MerCruiser number 824324T02, Volvo Penta number 3855805 and GM casting number 12552422 identify the same core marine manifold family used by several marine engine manufacturers.

⚙️ Key Features

• Genuine GM marine cast-iron intake manifold
• Mercury MerCruiser part number 824324T02
• Volvo Penta part number 3855805
• GM casting number 12552422
• Two-barrel, eight-bolt Vortec configuration

🚤 Compatibility

Commonly used on

• MerCruiser 4.3L V6 carburetted engines
• Volvo Penta 4.3GL and related V6 engines
• OMC Cobra and later GM-based marine engines
• Indmar, Marine Power and Crusader 4.3L Vortec applications

Typically suits

• Engine models:
• MerCruiser 4.3L two-barrel Vortec
• MerCruiser 4.3LX / 4.3L Alpha and Bravo carburetted applications
• Volvo Penta 4.3GL and related carburetted Vortec models
• GM Marine 4.3L / 262 CID V6
• Other marine engines using the eight-bolt 12552422 casting
• Engine Size: 4.3L / 262 CID V6
• Induction Type: Two-barrel carburettor or compatible marine throttle-body adapter
• Year Range: Approximately 1996 / 1997 - 2016
• Fitment Requirement: Confirm eight intake bolts, carburettor pattern, water passages and thermostat-housing layout

🔌 Function

The manifold distributes the fuel-air mixture from the carburettor or throttle body to all six cylinders and routes coolant through the upper engine.

⚠️ Common Signs of Failure

• Vacuum leak or unstable idle
• Internal or external coolant leakage
• Corrosion around water passages
• Cracked or warped carburettor mounting surface
• Poor cylinder-to-cylinder mixture distribution

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 824324T02 established Mercury MerCruiser service reference
• 3855805 corresponding Volvo Penta service reference
• 12552422 GM casting and core-manifold reference

OEM / Related Numbers

• 824324T02
• 824324T2
• 3855805
• 12552422
• GM 4.3L / 262 CID Vortec two-barrel manifold
• Eight-bolt Vortec intake pattern
• Related intake-manifold gasket sets must suit Vortec cylinder heads

Aftermarket / Verified Equivalents

• Repower Marine: RM824324T02
• Aftermarket Reference: INT-43-2BBL-AM
• Aftermarket Reference: INT432BBLAM
• Marine Engines 4 Less 4.3L V6 Vortec two-barrel cast-iron manifold
• Michigan Motorz 4.3L two-barrel Vortec marine manifold
• FridayParts replacement for 824324T02 / 3855805 / 12552422

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated