3876428 Main Bearing Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta main bearing kit 0.30 mm undersize, from the engine group, weighing 0.086 kg and listed for 5 applications on the MD series. The matching single bearing at the same undersize is 3876430, and the standard size is 3875307.

🚤 Compatibility

Typically suits:

• Volvo Penta MD7B
• Volvo Penta MD6A
• Volvo Penta MD6B
• Volvo Penta MD7A
• Volvo Penta MD67C

• Engine Family: MD

⚙️ Key Features

• 0.30 mm undersize
• Supplied as a kit
• 0.086 kg
• 5 applications on the MD series
• Single bearing at the same size is 3876430
• 0.3mm (Volvo assembly listing)
• 2 used per assembly

🔌 Function

Supplies the main bearing shells in the 0.30 mm undersize needed after the crankshaft has been reground.

⚠️ Common Signs of Failure

• Deep knock from low in the engine under load
• Low or falling oil pressure, worst when hot
• Bearing shells scored, copper showing through or wiped
• Metal glitter in the oil or on the filter element
• Crankshaft journals measured out of tolerance

🛠️ Service Notes

• Only for a crankshaft reground to 0.30 mm undersize - the standard size is 3875307
• This is the kit, while 3876430 is the same size as a single bearing, and only 14 grams separate the two listings, so read the kit wording rather than the weight
• Measure the fitted clearance on assembly and torque the caps to specification

📦 Condition

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