3856731 Main Bearing | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta main bearing in the standard size, from the Engine group, weighing 0.247 kg and listed for 29 applications. Standard means it suits an unground journal, so a crankshaft that has been reground needs the matching undersize shell instead.

🚤 Compatibility

Full model list at the end of this description.

⚙️ Key Features

• Standard size — for an unground journal
• 0.247 kg
• 29 applications
• Not for a reground crankshaft

🔌 Function

Carries the crankshaft in the block on a film of pressurised oil, holding it in line and taking the loads from every power stroke.

⚠️ Common Signs of Failure

• Oil pressure low or falling away when hot
• Deep rumble from the bottom end under load
• Running face scored, pitted or with the overlay worn through
• Copper showing through the bearing surface
• Metallic glitter in the oil or trapped in the filter

🛠️ Service Notes

• Measure the journals before ordering — a reground crank needs the undersize shell, not this standard one
• Fit the shells dry into clean, unmarked saddles and oil only the running face
• Renew the oil and filter and check the pump and pickup before running the engine up

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 3.0GLM-A, 3.0GLM-B, 3.0GLM-C, 3.0GLMMDA, 3.0GLP-A, 3.0GLP-B, 3.0GLP-C, 3.0GLP-D, 3.0GLP-E, 3.0GLP-J, 3.0GLP-N, 3.0GSM-A, 3.0GSM-B, 3.0GSMBYMCE, 3.0GSM-C, 3.0GSMLKD, 3.0GSMNCS, 3.0GSMWTR, 3.0GSP-A, 3.0GSP-B, 3.0GSPBYMCE, 3.0GSP-C, 3.0GSPEFS, 3.0GSPLKD, 3.0GSPMDA, 3.0GSPNCS, 3.0GSPWTR, 3.0GXiC-J, 3.0GXi-J