875483 Main Bearing Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta main bearing kit in the standard grade, weighing 0.152 kg and listed for 8 applications across MD and AQD series engines. It belongs to a graded family in this run: 875485 is the same 8-application listing in the 0.25 mm undersize grade, while 875484 (standard), 875488 (0.25 mm undersize) and 875489 (0.50 mm undersize) are listed for 7 applications. Order by the grade stamped on the old shells and by the application list — the published weights do not separate a graded bearing set and must not be used to choose.

🚤 Compatibility

Typically suits:

• Volvo Penta MD1B
• Volvo Penta MD2B
• Volvo Penta MD3B
• Volvo Penta MD11C
• Volvo Penta MD11D
• Volvo Penta AQD2B
• Volvo Penta MD17C
• Volvo Penta MD17D

• Engine Family: MD, AQD

⚙️ Key Features

• Standard grade
• 0.152 kg
• Listed for 8 applications across MD and AQD series engines
• 0.25 mm undersize equivalent on the same listing is 875485
• Order by the stamped grade, not by weight

🔌 Function

Carries the crankshaft in the block, holding it on an oil film and taking the load from each firing stroke.

⚠️ Common Signs of Failure

• Low or falling oil pressure, worst when hot at idle
• Deep rumble from the bottom of the engine under load
• Bearing material or copper flakes found in the sump or filter
• Shells scored, wiped or showing the underlay through the surface
• Crankshaft end float or journal clearance measuring beyond limits

🛠️ Service Notes

• Read the grade stamped on the old shells and measure the journals before ordering — standard, 0.25 mm and 0.50 mm undersize are separate kits and mass is no guide to which is which
• There are two standard-grade kits in this run, 875483 and 875484, distinguished by their application listings rather than by any note; confirm against your engine before ordering
• Fit shells dry into clean housings, oil the running face only, and tighten to the specified sequence

🔄 Supersession & Cross Reference

Aftermarket / Verified Equivalents

• Crom: 111464

📦 Condition

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