3856120 Volvo Reinforcement -Port | Genuine Used Part

🔧 Product Description

Genuine Volvo Penta Port-Side Oil-Pan Reinforcement - Part Number: 3856120

A genuine used port-side oil-pan reinforcement plate for selected Volvo Penta GM-based 5.0L and 5.7L V8 petrol engines.

The reinforcement installs along the port side of the oil pan and distributes clamping loads around the oil-pan flange. It helps keep the thin stamped oil pan properly supported and reduces local distortion around the mounting fasteners. Volvo Penta diagrams identify 3856120 as the port reinforcement.

⚙️ Key Features

• Genuine Volvo Penta port-side oil-pan reinforcement
• Correct Volvo reference 3856120
• Companion to starboard reinforcement 3856121
• Helps prevent oil-pan flange distortion
• Broad GM-based 5.0L and 5.7L application coverage

🚤 Compatibility

Commonly used on

• Volvo Penta GM-based 5.0L V8 engines
• Volvo Penta GM-based 5.7L V8 engines
• Carburetted and fuel-injected sterndrive packages
• Inboard and Ocean Series petrol engines

Typically suits numerous

• Volvo Penta 5.0GL variants
• Volvo Penta 5.0Gi and 5.0GXi variants
• Volvo Penta 5.0OSi variants
• Volvo Penta 5.7GL variants
• Volvo Penta 5.7Gi and 5.7GXi variants
• Volvo Penta 5.7OSi and 5.7OSXi variants
• Volvo Penta V8-225, V8-270, V8-300 and V8-320 variants using the matching oil pan
• Engine Type: GM-based V8 petrol marine engine
• Displacement Range: 5.0L - 5.7L
• Year Range: Broad model coverage; verify by engine designation

🔌 Function

The reinforcement spreads bolt load along the oil-pan flange and helps the gasket maintain an even seal against the cylinder block.

⚠️ Common Signs of Failure

• Reinforcement is bent
• Oil pan leaks between mounting bolts
• Bolt holes are elongated
• Plate is heavily corroded
• Oil-pan flange becomes wavy or distorted
• Incorrect clamping allows the gasket to move
• Plate is missing following an earlier engine rebuild
• Mounting hardware no longer seats squarely

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3856120 → Replaces OMC / Volvo reference 0914362
• 0914362 earlier port oil-pan reinforcement

OEM / Related Numbers

• 3856120 - port reinforcement
• 0914362 - earlier port reinforcement
• 3856121 - starboard reinforcement
• 0914363 - earlier starboard reinforcement
• Oil-pan gasket kit: 3856138
• Stud: 3853202
• Nut: 3856930
• Oil-pan bolt: 3852595
• Oil-drain fitting: 0913364

Aftermarket / Verified Equivalents

• OMC / Evinrude Johnson: 3856120
• No independent aftermarket equivalent
• Used Volvo Penta and OMC-branded plates are physically equivalent where the same part number is specified

📦 Condition

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