0311212 BRP Cylinder Head | Genuine Used Part

🔧 Product Description

Genuine BRP / OMC 5HP-6HP Cylinder Head - Part Number: 0311212

A genuine Johnson and Evinrude cylinder head for selected 5HP and 6HP twin-cylinder two-stroke outboards.

The head closes the top of the cylinder block and forms the combustion chambers above both pistons. It also provides the threaded spark-plug locations and the sealing surface for the cylinder-head gasket.

⚙️ Key Features

• Genuine Johnson / Evinrude OMC cylinder head
• Correct part number 0311212
• Original unprefixed number 311212
• Cross-references with related head number 0321252
• Used on selected 5HP and 6HP twin-cylinder outboards

🚤 Compatibility

Commonly used on

• Johnson and Evinrude twin-cylinder 5HP and 6HP powerheads
• Early OMC small-outboard combustion-chamber assemblies

Typically suits

• Engine models:
• 1968 Johnson 5HP LD-13M
• 1968 Evinrude 5HP twin-cylinder models using head 0311212
• 1969 Johnson 6HP 6R69M
• 1969 Johnson 6HP 6RL69M
• 1969 Evinrude 6HP 6902M
• 1972 Johnson 6HP 6R72D
• 1973 Johnson 6HP 6R73S
• Johnson and Evinrude 6HP twin-cylinder engines through approximately 1975 using 0311212 or 0321252
• HP Range: 5HP - 6HP
• Engine Type: Johnson / Evinrude twin-cylinder carburetted two-stroke outboard
• Year Range: Approximately 1968 - 1975

🔌 Function

The cylinder head forms the combustion chambers and seals the upper ends of the cylinders against the head gasket.

⚠️ Common Signs of Failure

• Combustion surface pitted or corroded
• Head distorted from overheating
• Spark-plug threads stripped or damaged
• Water leakage around the head gasket
• Combustion leakage or low compression

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 0311212 current documented cylinder-head reference for the early application
• 0321252 related later / interchangeable cylinder-head reference where specified

OEM / Related Numbers

• 0311212
• 311212
• 0321252
• 321252
• 0306204 earlier cylinder-head gasket
• 0329103 current related cylinder-head gasket
• Sierra: 18-2961 related replacement head gasket
• 0381362 related cylinder and crankcase assembly

Aftermarket / Verified Equivalents

• No aftermarket cylinder-head equivalent

📦 Condition

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