861956 Piston Ring Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta piston ring kit in the 0.50 mm oversize, from the Engine group, weighing 0.032 kg and listed for 8 applications on MD series engines. The 0.

🚤 Compatibility

Typically suits:

• Volvo Penta MD2010
• Volvo Penta MD2010B
• Volvo Penta MD2010-C
• Volvo Penta MD2010-D
• Volvo Penta MD2020
• Volvo Penta MD2020B
• Volvo Penta MD2020-C
• Volvo Penta MD2020-D

• Engine Family: MD

⚙️ Key Features

• 0.50 mm oversize
• 0.032 kg
• 8 applications on MD series engines
• 0.25 mm oversize version is kit 861955
• 0.50mm (Volvo assembly listing)
• Quantity varies by assembly, most commonly three

🔌 Function

Seals the combustion chamber against the cylinder wall, meters and scrapes oil off the bore, and carries heat out of the piston crown into the liner.

⚠️ Common Signs of Failure

• Blue smoke from the exhaust, heaviest on overrun and at idle
• Oil use rising steadily with no leak to explain it
• Breather blowing oil mist, or noticeable crankcase pressure
• Low compression on one or more cylinders
• Rings seized in their grooves, chipped, or with the gaps worn wide on strip-down

🛠️ Service Notes

• This is the greater of the two oversize steps listed here, so confirm the bore has actually been taken out to 0.50 mm before ordering
• Check ring gaps in their own bores and stagger them to the manual's pattern
• Bore glaze must be broken properly or a new set will not bed in

📦 Condition

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