875547 Piston Ring Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta piston ring kit for standard bore, for production orders 3689 to 4273, 4330 to 6711 and 6960 onwards, weighing 0.05 kg and listed for 3 applications on MD series engines. Those production ranges are what decide the order — the companion kit 875476 covers production order 3688 and production orders 4274 to 4299 and 6712 to 6959 on the same engines. Between them the two kits cover the run, and the production number is the only reliable way to choose.

🚤 Compatibility

Typically suits:

• Volvo Penta MD6A
• Volvo Penta MD6B
• Volvo Penta MD67C

• Engine Family: MD
• Serial Range: MO 3689-4273, 4330-6711, 6960-, Std D

⚙️ Key Features

• Standard bore
• For production orders 3689 to 4273, 4330 to 6711 and 6960 onwards
• 0.05 kg
• Listed for 3 applications on MD series engines
• Companion kit for the other production ranges is 875476

🔌 Function

Seals the piston to the cylinder wall, controls oil on the bore and carries combustion heat out to the liner.

⚠️ Common Signs of Failure

• Blue smoke on the overrun and oil consumption climbing
• Compression low and slow to build on a dry test
• Crankcase breather blowing heavily
• Rings stuck or broken in their grooves at strip-down
• Bore glazed or ridged at the top of ring travel

🛠️ Service Notes

• Read the engine's production number before ordering — 875476 covers the ranges this kit does not, and the two are not interchangeable
• Piston ring kit 875566 also appears in this run for MD engines with no production range given; if you cannot read the production number, order by part number against the engine's parts list
• Check ring end gaps in the bore and fit the rings the right way up

📦 Condition

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