# 861955 Piston Ring Kit | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta piston ring kit in the 0.25 mm oversize, from the Engine group, weighing 0.037 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

-   0.25 mm oversize
-   0.037 kg
-   8 applications on MD series engines
-   0.50 mm oversize version is kit 861956
-   0.25mm (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, worst on overrun and when idling after a long run
-   Oil consumption climbing between services with no external leak to account for it
-   Crankcase pressure rising, or oil mist pushed out of the breather
-   Compression down on one or more cylinders and not recovering with oil in the bore
-   Rings found gummed in their grooves, broken, or with the gaps worn open on strip-down

## 🛠️ Service Notes

-   Measure the bore before ordering, as a 0.25 mm kit will not seal a bore honed to the 0.50 mm step
-   Check each ring's gap in its own bore before assembly and stagger the gaps as the workshop manual specifies
-   Inspect the piston pin and small end while the piston is out rather than reringing over worn parts

## 📦 Condition

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

## Details

- **Price:** 343.35 AUD
- **Vendor:** Volvo Penta
- **Type:** Service & Repair Kits
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 343.35 AUD | In stock |

## Images

- 861955 Piston Ring Kit | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/861955-piston-ring-kit-genuine-volvo-penta)
> Updated: 2026-09-01